U.S. PATENT AND TRADEMARK OFFICE
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U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
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Class 096
GAS SEPARATION: APPARATUS
Class Definition:
This class provides for apparatus used in separation of a gas
from a fluid mixture comprising (i) a gas and solid or liquid
particles entrained therein, (ii) a liquid and gas entrained
therein, or (iii) a plurality of gases. As a general rule for
this class, there must be a relationship of apparatus parts
embracing: (a) an inlet for the fluid mixture to be treated,
(b) a means effective to cause separation into constituent
parts, and (c) an outlet for at least one constituent
separate and distinct from an outlet for another constituent,
which may be for removal of the separating media itself, or a
single outlet used at different times to remove the separated
constituents. The gas separation apparatus for this class
does not include means in which the separation is caused by a
chemical reaction.
The basic subject matter of this class is of a subcombination
nature and may include only such ancillary apparatus (e.g.,
fluid handling means, etc.) as is necessary to perfect the
gas separating function. Significant inclusion in a claim of
features beyond merely perfecting the gas separating function
indicates classification in a more comprehensive class.
Generally, however, the mere naming of an art device in a
claim to a gas separator does not affect classification.
Thus, a claim to an air filter combined with a nominally
included motor vehicle is proper for this class.
(1) Note. The gas separation apparatus for this class
generally involves means to use a magnetic field, to use an
electrical field, to diffuse selectively, to sorb on a solid
sorbent, to degasify a liquid, to contact a gas with a
liquid, to filter, or to deflect, or involves other
mechanical means. See Lines With Other Classes, below, for
the line concerning the means in which the gas separation is
caused by a chemical reaction.
(2) Note. This class also provides for the subcombination of
the separating media, per se, when disclosed for gas
separating. However, see Lines with other Classes, and
References to Other Classes, below, for solid sorbents and
liquid sorbents.
(3) Note. Devices which may inherently perform a gas
separating function but are not found in this class include
grids, gratings, grilles, woven fabrics, screens, and the
like. They will be found in a stock material class, for which
see Lines With Other Classes, Below. However, devices of
these types when positively stated as being for gas
separation will be found in Class 96.
(4) Note. This class also provides for apparatus in which
the fluid mixture is treated to change its make-up, but no
real separation occurs, provided no other suitable
classification exists. Accordingly, in this class are found
"spark arresters," which merely change the size of particles
entrained in a gas. (See References To Other Classes for the
line concerning spark arresters when used on furnaces.) These
devices are usually deflectors or screens and are included in
this class because of their similarity to apparatus which
actually separate the fluid mixture into constituent parts.
Similarly, agglomerators which by themselves may not separate
constituents of a fluid mixture, but cause small particles
therein to join together or coalesce to form larger
particles, are in this class unless basis for other
classification exists.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
See the class search note for Class 422, Chemical Apparatus
and Process Disinfecting, Deodorizing, Preserving, or
Sterilizing, for the line concerning the means in which the
gas separation is caused by a chemical reaction.
Solid sorbants are found in Class 502, Catalyst, Solid
Sorbent, or Support Therefor: Product or Process of Making,
and liquid sorbents are found in Class 252, Compositions.
(Also see the search class notes below.)
Devices which may inherently perform a gas separating
function but are not found in this class include grids,
gratings, grilles, woven fabrics, screens, and the like. They
will be found in a stock material class (e.g., Class 428,
Stock Material or Miscellaneous Articles, etc.).
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, appropriate
subclasses for gas separation devices claimed in combination
with a work contacting tool (e.g., a vacuum cleaner
comprising a device contacting the work to be cleaned and an
air filter, etc.) and 301 for gas separating means
associated with fixed position or installed cleaners. For
classification in Class 15, subclasses 301+, it is not
necessary to claim the work contacting tool; it is sufficient
to claim a building modification to accommodate the system
parts or some special modification of the apparatus for its
intended use, such modification going beyond mere ground
support means.
34, Drying and Gas or Vapor Contact With Solids, appropriate
subclasses for generic apparatus for separating liquids from
solids (i.e., drying) and the contacting of solids with
either gases or vapors. Class 96 takes the apparatus for the
separation of a gas from a fluid mixture in combination with
means to regenerate the separating media by drying or by gas
or vapor contact.
47, Plant Husbandry, appropriate subclasses for apparatus for
separation of a gas from a fluid mixture by use of a plant of
higher order.
48, Gas: Heating and Illuminating, appropriate subclasses for
apparatus for the manufacture of heating and illuminating
gases and means for the purification, distribution, and
storage thereof.
60, Power Plants, 272 for a power plant of the internal
combustion engine type with treatment or handling of exhaust
gas.
62, Refrigeration, appropriate subclasses for apparatus
peculiar to removing heat from a substance, usually by a
change of phase of a coolant or refrigerant, and for
apparatus involving subject matter for Class 96 combined with
significant refrigeration apparatus. Examples of significant
refrigeration are: (i) expansion of a gas through an orifice
whereby cooling is effected to condense any of the
constituents of the gas by such temperature reduction; (ii) a
significant physical relationship or arrangement between
elements of a refrigeration circuit (e.g., two related
refrigeration coils, detailed description of the circuit,
etc.); (iii) change of phase of a coolant or refrigerant
(i.e., evaporation, melting, or sublimation) whereby cooling
is effected to condense any of the constituents of the gas by
such temperature reduction. Some examples of what may be
found in Class 62 are: (a) separation of a constituent from a
plurality of gases by a significantly claimed refrigeration
step or apparatus; (b) condensation of moisture from the
atmosphere as a result of a refrigeration operation; (c) gas
drying by sorption followed by contacting the dried gas with
a liquid to produce cooling by evaporation; (d) a
refrigerated enclosure combined with sorption means; (e)
refrigeration producing processes and apparatus combined with
steps or means for drying the refrigerant; and (f) extracting
a constituent from a plurality of gases by liquefaction and
separation (e.g., fractionation or distillation, etc.).
73, Measuring and Testing, 23.2 for apparatus for gas
analysis, per se, and also the combination of gas separation
apparatus and significant gas analysis means. The combination
of gas separation apparatus and nominal means for "analyzing"
or "detecting" without further detail of the analysis or
detection means is insufficient to cause a patent to be
placed in Class 73; that patent will be placed in Class 96.
Also, if there is feedback means from the analytical
apparatus to control or effect a change in the gas
separation, then classification is in Class 96. For volume or
rate of flow meters combined with gas-liquid separators, see
Class 73, subclass 200.
95, Gas Separation: Processes, for the corresponding
processes to the apparatus of Class 96. When a patent has a
claim or claims to a Class 95 process and a claim or claims
to a Class 96 apparatus, the patent will be placed as an
original in Class 95, even though there may be an apparatus
claim that is more comprehensive than a process claim.
110, Furnaces, 119 for significant furnace apparatus
including a spark arrester.
118, Coating Apparatus, 715 for coating apparatus in which
the coating material used is either gaseous or vaporous. The
apparatus may have gas separation means for removing foreign
or undesirable components from the coating material.
122, Liquid Heaters and Vaporizers, subclass 492 for devices
located in the steam dome of a boiler for separating water
from steam.
123, Internal-Combustion Engines, 518 for
internal-combustion engines including a charge-forming device
having a fuel vapor recovery and storage system.
128, Surgery, 200.24 for apparatus for supplying a
breathable gas to, or exhausting such gas from, a living
body. Subclass 200.24 and the subclasses mentioned below
require that the apparatus be adapted for use on or in the
living body and also include diagnostic or therapeutic
apparatus when the only disclosed utility is for diagnosis or
treatment of a living body. See especially subclass 200.25
for an artificial gill or means for separating entrained air
from a liquid stream; subclass 201.25 for a respiratory
device including body or head supported means covering user's
scalp and means for removing a substance from respiratory
gas; subclass 204.16 for removal of a substance from
respiratory gas by cooling; subclass 205.12 for means for
supplying respiratory gas under positive pressure including
means for removing a substance from the respiratory gas; and
subclass 205.27 for a respiratory device including means for
removing a substance from a respiratory gas.
131, Tobacco, 331 for means for removing or separating a
constituent material from tobacco smoke combined with tobacco
products or disclosed for use with a tobacco user's appliance
or article where the disclosure or claim is directed solely
to such use. A copy of a patent so limited as above should be
placed as a cross-reference in Class 96 if general utility
for gas separation is recognized.
137, Fluid Handling, appropriate subclasses for combinations
of fluid handling apparatus and gas separation apparatus
involving more than mere flow control (e.g., valving, etc.)
to or from the gas separating apparatus. (i) For
classification in either Class 137 or Class 96 where both the
fluid handling apparatus and gas separation apparatus are
included in the combination, classification will be based
upon the ultimate purpose of the subject matter and not on
the ancillary or subordinate feature of the combination
consistent with the objects and aims therefor (e.g., it is
not intended that the inclusion of a fabric filter no matter
how specifically defined will be sufficient to carry a "gas
field storage and distribution system" to Class 96, whether
the filter protects the operating parts of the system or is
the most downstream element thereof). The fluid handling for
Class 96 should be no more than that necessary to convey or
conduct the fluid mixture to, at, or away from the point of
separation. (ii) However, where (a) the Class 137 feature is
a simple valve (e.g., a check valve, a mere stop and go
valve, or a mere flow control valve as distinct from a
multiway valve or a pressure regulator), (b) the gas
separation apparatus and valve are in an intimate flow
relationship within a gas conduit, and (c) the gas separation
apparatus is claimed by more than name only, classification
is in Class 96, regardless of the ultimate purpose of the
subject matter and irrespective of the details of the valve
recited in the claim. (iii) Class 137 also takes separation
of gases from gases, liquids, or solids by gravitational
means only (i.e., where no specific means is claimed for
effecting the separation). A single expansion chamber alone
which separates a fluid mixture is not regarded as a specific
separating means. However, two such chambers (in series or
parallel) are considered to be specific. If there is a baffle
or other impingement surface claimed, other than the wall of
the chamber itself, such apparatus is to be placed in Class
96.
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, appropriate subclasses for apparatus for
transferring fluent material through a flow confining system,
the source and receiver parts of which are normally
separable.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
appropriate subclasses for apparatus there classified for
adhesively bonding and otherwise manufacturing filters.
160, Flexible or Portable Closure, Partition, or Panel,
appropriate subclasses for flexible fabric panel units and
382 for fabric fastening means. Class 160 is the generic
class for panel units having flexible fabric and takes
flexible fabric panel units having several different named
purposes, one of which may be gas separation. Class 96 takes
a panel unit having flexible fabric when used only for gas
separation.
165, Heat Exchange, appropriate subclasses for apparatus
where only indirect heat exchange is involved and 58 for a
heating and cooling system with an ancillary separator.
However, cold wall-hot wall thermal diffusion apparatus will
be found in Class 96, subclass 221.
166, Wells, for shafts or deep borings in the earth for the
extraction of fluids from the earth. Gas separation apparatus
including a nominal recitation of a well is proper for Class
96. For classification in Class 166, some details specific to
wells should be recited for the combination of gas separation
apparatus and a well. However, in the situation in which one
of the constituents separated is inserted into an input well,
a mere broad recitation of such well is sufficient for
classification in Class 166.
180, Motor Vehicles, subclass 68.3 for modified vehicle
structure such as hood modifications and other air inlets
(e.g., body grille, etc.) with conduits or connections to or
for carburetor intake and including filter means.
181, Acoustics, subclass 231 for a muffler with a solid
particle separator (e.g., spark arrester, vacuum cleaner,
etc.). See Class 96, subclasses 380+ for gas separation
apparatus with sound damping means.
196, Mineral Oils: Apparatus, for apparatus for treating,
refining, or recovering mineral oils such as petroleum, coal,
tar, pitch, asphalt, or related products. Class 196 takes
apparatus having means for gas separation combined with
significant means to treat, refine, or recover mineral oils.
202, Distillation: Apparatus, appropriate subclasses for
apparatus for the volatilization of a substance from either
solids or liquids for the purpose of recovering material from
the vapor produced by condensation or absorption. Other means
for the physical treatment of the vapor may be included
(e.g., filter, deflector, dephlegmator, etc.).
204, Chemistry: Electrical and Wave Energy, 193 for
apparatus in which a chemical change is brought about by the
application of an electric current to material being treated
wherein more than the mere thermal effect of the current is
involved, and subclasses 660+ for apparatus for the
separation or purification of liquids by the physical or
physical-chemical action of an electrical stress.
209, Classifying, Separating, and Assorting Solids,
subclasses indented under subclass 21 and 133 that include
"deposition" in their titles for apparatus for the separating
and segregating into grades components of solid mixtures
employing a gaseous suspending medium which is separated from
the solids.
210, Liquid Purification or Separation, appropriate
subclasses for apparatus for the separation of a constituent
from a flowable liquid mixture; except for apparatus for the
separation of a gas initially present in a liquid mixture.
Class 210 is superior to Class 96 and takes separating
apparatus, per se, generically disclosed or claimed for use
in fluid separation or if the disclosure or a claim is
restricted to liquid separation apparatus. Class 210 also
takes apparatus which removes or vents gas formed
incidentally to the handling of the fluid mixture or as a
result of a Class 210 treatment (see particularly subclass
120, 180, 188, 218, 406, and 436). However, Class 96 takes
apparatus operating to remove gas initially present in an
inflowing liquid mixture, with or without liquid separation.
Apparatus for the removal of a volatile organic compound
(e.g., ethanol (C[subscrpt]2[end subscrpt]H[subscrpt]5[end
subscrpt]OH), gasoline, etc.) from a liquid is not taken to
be apparatus for the degasification of a liquid for Class 96
when the volatile organic compound is initially present as a
liquid mixed with another liquid. Apparatus for the removal
of a volatile organic compound from a liquid may be found in
Class 210 for liquid purification or separation or Class 202
for separatory distillation. Class 96 will also take
apparatus including a liquid separation means in a Class 96
gas separation apparatus (e.g., means to regenerate a
scrubbing liquid in a gas scrubbing apparatus, etc.).
215, Bottles and Jars, subclass 308 for closures for bottles
and jars with the receptacle interior communicable with the
exterior through a filter when the closure is in the applied
position.
220, Receptacles, subclass 366 and 367+ for vents for
closures for receptacles combined with gas separating means
wherein the gas separator is recited by name only, or the
claim includes details of the receptacle (e.g., splash plate
in the receptacle or vent, etc.) or of the closure (e.g.,
configuration or means for attaching to the receptacle,
etc.).
236, Automatic Temperature and Humidity Regulation,
subclasses 53-60 for steam traps with thermostatically
controlled valves.
239, Fluid Sprinkling, Spraying, and Diffusing, 34 for slow
diffusers, which are devices used to disperse or spread
material into the ambient air without the use of draft
producing means. With a disclosure of gas separation or
humidity control (air conditioning), Class 239 will take, as
a slow diffuser, a pad, filter, or fibrous mass that is
saturated or maintained saturated with a diffusible liquid
(water or volatile solvents) unless any of the following are
included: (i) gas contacting means within the meaning of
Class 261 (e.g., special flow arrangements through conduits
or the like, etc.), or (ii) gas movement effecting means
(e.g., pump, fan, etc.). Class 261 will take patents having
the qualifications in (i) or (ii) if the filter, pad, or mass
is: (a) continuously supplied with liquid, (b) cyclically or
periodically moved through a liquid reservoir, (c) maintained
wet by liquid applying means, or (d) moistened by maintaining
some part of a continuous wick type member immersed in
liquid. Class 96 will take patents having the qualifications
in (i) or (ii) if the liquid supply means described in (a)
through (d) is not included. An absorbent mass with oil or
viscous fluid therein or supplied thereto disclosed for gas
separation, or a solid or nonabsorbent sheet disclosed in a
gas separating environment is not classified in Class 239,
but is classifiable in either Class 96 or Class 261,
depending on the nature of the liquid source. (See also the
search class note to Class 261 in this section).
241, Solid Material Comminution or Disintegration, 68 for
apparatus for combinations of comminution and separation of
solids from a gas. Class 241 is superior to the material
separation classes and, therefore, provides for apparatus in
which comminution is combined with means to separate the
material into classes according to the physical
characteristics of its components before, during, or after
the comminuting operation. Class 96 takes apparatus, such as
deflectors or the like, that may act to comminute material as
a secondary or incidental function of what is basically a
holding back or separating procedure (e.g., disintegration or
attrition of ignited particles in spark arresters, etc.).
Such apparatus are classified on the basis of their essential
function in Class 96.
242, Winding, Tensioning, or Guiding, 550 for unwinding an
elongated material, and subclasses 570+ for a coil holder of
general use.
250, Radiant Energy, 281 for apparatus for the ionic
separation of materials utilizing the charge-to-mass ratios
of particles. See particularly subclasses 294+ for apparatus
to subject the ionized particles to the effects of an
electric or magnetic field, which causes the particles to
travel through a curved trajectory, the particles of a
certain charge-to-mass ratio having a trajectory different
from those particles having other charge-to-mass ratios.
252, Compositions, 189 for substances (e.g., liquid sorbent
compositions, etc.) for use in absorbing or binding carbon
monoxide (CO), sulfur (S), negative elements, or acids;
subclass 193 for substances (e.g., liquid sorbent
compositions, etc.) for use in absorbing or binding ammonia,
alkalis, or other bases; and subclass 194 for substances
(e.g., liquid sorbent compositions, etc.) for use in
absorbing or binding water.
261, Gas and Liquid Contact Apparatus, appropriate
subclasses, for apparatus for degasifying liquid (e.g.,
deaerating feed water heater, etc.) wherein the liquid is
merely contacted with a gas in a chamber or space for
deaeration thereof; for apparatus wherein a gaseous fluid
mixture is contacted with a liquid spray, sheet, stream, or
bath to precipitate dust or to sorb a constituent from the
gaseous fluid mixture; for apparatus comprising a
nonabsorbent element on which a gaseous fluid mixture is
contacted with a liquid if the element is continuously
supplied with a liquid or is continuously moved into and out
of a liquid bath or supply; and for apparatus comprising an
absorbent porous sheet or mass on which a gaseous fluid
mixture is contacted with a liquid if the sheet or mass is:
(a) continuously supplied with liquid, (b) cyclically or
periodically moved through a liquid reservoir, (c) maintained
wet by liquid applying means, or (d) moistened by maintaining
some part of a continuous wick type member immersed in
liquid, by following the law of the machine, or during normal
operation of a gas contacting function. Note that under the
provisions of (a) and (b) there must be no affirmative means
to dry the sheet or mass, nor means to assure a dry condition
of the sheet or mass before gas flow is resumed or the sheet
or mass is returned to the gas contacting position. If
apparatus for degasifying liquid by contact with a gas has
other means to cause gas separation of the liquid with gas
entrained therein, of the separated gas, or of the separated
liquid, then the apparatus is classified in Class 96. If
apparatus in which a gaseous fluid mixture is contacted with
a liquid to precipitate dust or to sorb a constituent from
the gaseous fluid mixture has other means to cause gas
separation or has means to treat the contact liquid, then the
apparatus is classified in Class 96.
(1) Note. Apparatus for separating ammonia
(NH[subscrpt]3[end subscrpt]) or acid anhydrides
(CO[subscrpt]2[end subscrpt], SO[subscrpt]2[end subscrpt],
etc.) from a gas by mere contact with a liquid is classified
in Class 261.
(2) Note. Processes for gas separation by contacting a
gaseous fluid mixture with a liquid and processes of
degasifying a liquid are classified in Class 95.
266, Metallurgical Apparatus, 144 for metallurgical
apparatus combined with gas separating means and subclasses
200+ for apparatus for treating liquefied metal. See
particularly subclasses 208+ for apparatus for treating
liquefied metal by application of vacuum that may include
degasification of the liquefied metal.
296, Land Vehicles: Bodies and Tops, 77.1 for storm-front
shields, aprons, or robes used to protect the occupants of
vehicles from storm or wind coming from the direction in
which the vehicle is moving.
323, Electricity: Power Supply or Regulation Systems,
subclasses 220-354 for voltage magnitude control means not
restricted to electrostatic precipitator systems.
363, Electric Power Conversion Systems, appropriate
subclasses, especially 59, 74+, and 100 for current
rectification systems not restricted to electrostatic
precipitator systems.
376, Induced Nuclear Reactions: Processes, Systems, and
Elements, for apparatus for induced nuclear reactions
combined with means for reaction product treatment. See
particularly 146, 189, 195, 198, and 201. See subclasses 308+
for apparatus including fission reactor material treatment
and subclasses 370+ for reactor structures with means for
separation of a vapor.
383, Flexible Bags, 42 for bag closures and appropriate
subclasses for bags not used as filter bags for gas
separation.
406, Conveyors: Fluid Current, 154 for apparatus to convey
solid material in a fluid current with means to separate the
solids from the fluid at the conveyor outlet.
415, Rotary Kinetic Fluid Motors or Pumps, subclass 121.2
for a pump or motor combined with means to separate solids
from a gaseous working fluid and subclasses 169.2+ for a pump
or motor combined with means to separate moisture vapor or
liquid from a gaseous working fluid.
417, Pumps, appropriate subclasses for pumps combined with
upstream filtering or separating means specifically disclosed
as protecting the pump and also for pumps combined with
separators if any of the separated constituents are fed back
or applied to the pump. This includes, for example,
lubricant, coolant, or an impelling fluid which is separated
from an impelled fluid, as in a jet pump. Class 417 takes jet
pumps for flues combined with a spark arrester, because the
combination of a jet pump and a spark arrester is considered
to be a perfecting feature of the pump. See Class 417,
subclass 156.
(1) Note. A system for evacuating a space and in which a
trap is included for preventing back-streaming or
back-migration of molecules from a pumping area to the space
being evacuated and which operates in the manner of a Class
96 gas separator will be considered a gas separator whether
or not the apparatus is so identified. It will be noted that
with the trap positioned between the space and the pump,
separation would occur with gas flowing in either direction
(i.e., from the space to the pump or from the pump to the
space), if the fluid is separable.
Classification of the different combinations which may be
claimed is as follows: (a) A Class 96 type trap or separator,
per se, identified either as a pump or a separator is
classified in Class 96. (b) A separator or molecule trap of
the Class 96 type combined with a pump to evacuate space is
classified in Class 96 unless there is some specific
relationship between the separator or trap and the pump
(other than the mere pumping of the fluid to and through the
trap). As a nonlimiting example, if the separated material is
conducted to a pump element for lubrication, cooling, etc.,
then classification is in Class 417. (c) A separator or
molecule trap of the Class 96 type combined with a pump and a
space being evacuated is classified in Class 96 unless there
is some special separable connection of the type recognized
in Class 141 for receiver coaction, in which case
classification is in Class 141, regardless of any
interrelationship between the pump and the separator or trap
as set forth in (b) above. (d) A pump claimed in combination
with nominally claimed filter or separator will be classified
in Class 417. (a), (b), and (c) do not take into account the
combination with heat exchanging or refrigerating means
provided for in Classes 62 and 165, for which see the search
class notes set out in other parts of this section.
418, Rotary Expansible Chamber Devices, for rotary expansible
chamber type pumps. The line between Class 96 and Class 418
is the same as set forth above for Class 417.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, for apparatus for
(a) carrying out chemical reactions, (b) preparing or
treating chemical compounds or compositions, even though only
a physical reaction is discernible, and (c) performing an
analysis which involves either a chemical reaction or a
physical reaction not elsewhere provided for. See 88 for
apparatus for quantitative or qualitative chemical analysis
of a gas sample including means for absorbing or adsorbing
the gas sample or that portion to be tested into or onto
liquid or solid media. See subclasses 120+ for apparatus for
(a) taking the odor out of or masking the odor of or (b)
chemical purification of a life-sustaining environmental gas
(for breathing apparatus) or the chemical generation of the
same. See subclasses 168+ for apparatus for the modification
of a waste gas, prior to its discharge into the atmosphere,
by chemical reaction to reduce the pollutant content thereof.
Class 96 takes the combination of preserving, disinfecting,
or sterilizing means and gas separation means of the type
that meets the requirements for gas separation apparatus in
the definition for Class 96. The gas separating means may be
claimed by name only, provided such named device is disclosed
as being more than a mere supporting or treating means for a
preserving, disinfecting, or sterilizing substance (see,
e.g., Class 96, subclasses 223+).
428, Stock Material or Miscellaneous Articles, appropriate
subclasses for stock material which may inherently perform a
gas separating function (e.g., a structurally defined web or
sheet including apertures, etc.). However, stock material
when positively stated as being for gas separation will be
found in Class 96 (see Class 55, 522 ).
435, Chemistry: Molecular Biology and Microbiology, 283.1
for apparatus claimed or solely disclosed for using a
microorganism or enzyme to synthesize a chemical product or
for treating a material with a microorganism or enzyme to
separate, liberate, or purify a preexisting substance.
451, Abrading, subclass 453 for an accessory usable with
abrading means for collecting particles coming from a
grinding wheel or work during operation of the grinding
wheel.
454, Ventilation, appropriate subclasses for ventilated
structures, per se, or combined with a gas separating
operation. Class 454 includes devices such as screens or
gridlike members (e.g., bird screens, etc.), chimney caps,
diffusion type air registers, hoods, offtakes, louvers, and
pipe caps which function to control rather than to separate
gas.
493, Manufacturing Container or Tube From Paper; or Other
Manufacturing From a Sheet or Web, 39 for cigarette filter
making methods or apparatus; see especially subclasses 47+
for methods or apparatus to assemble dissimilar filter
materials (e.g., fiber and powdered charcoal, etc.) and
subclass 941 for a cross-reference art collection for
operations involving the construction of a filter.
494, Imperforate Bowl: Centrifugal Separators, for apparatus
for the breaking up or subdividing of material, which
material comprises a mixture of fluids or fluent substances,
into two or more components by utilizing a rotatable,
receptaclelike member having a generally solid wall, and
commonly termed a bowl, for subjecting the material to
centrifugal force. Thus, gas separation apparatus that is an
imperforate bowl, centrifugal separator is proper for Class
494.
502, Catalyst, Solid Sorbent, or Support Therefor: Product or
Process of Making, 60 for zeolite compositions, per se, and
for processes of making zeolite compositions, and subclasses
400+ for other solid sorbent compositions, per se, and for
processes of making solid sorbent compositions. Class 502
will take zeolite or other solid sorbent compositions having
details of the physical characteristics of the composition
itself (e.g., porosity, particle size, etc.). Class 502 will
also take zeolite or other solid sorbent compositions that
are layered, laminated, or otherwise affixed to another
zeolite or other solid sorbent composition or to a support
material. Class 96 takes apparatus having (a) an inlet for
the fluid mixture to be treated, (b) a means effective to
cause separation into constituent parts, and (c) an outlet
for at least one constituent separate and distinct from an
outlet for another constituent or a single outlet used at
different times to remove the separated constituents. The
means effective to cause separation into constituent parts
confines the zeolite or other solid sorbent composition
inside an enclosure that contains the fluid mixture being
separated. Class 96 also takes filter elements having zeolite
or other solid sorbent compositions held in an open structure
or rim that encases, holds, or borders the zeolite or other
solid sorbent composition or held on a skeletal structure.
GLOSSARY:
CHARGE GAS, GAS, OR SYSTEM FLUID
(Terms used in Class 55 subclass titles and definitions).
These terms are used synonymously and mean the inlet mixture
of gas carrying therein solids or fluids, the mixture during
separation, or a gaseous constituent after separation.
DETECT
The term "detect," which is used in many of the control
subclasses, is used in both a quantitative and a qualitative
sense. This means that a definite measurement of a process
variable is made (e.g., temperature, pressure, concentration,
etc.) or that the presence of a particular event is
determined (e.g., presence of sparking, change in liquid
level determined by position of float, etc.).
FILTER
An article or mass of material made of closely spaced or
intimately arranged intermeshed or unconnected fibers,
elements, strands, or particles that collectively act as a
barrier to physically retain at least one constituent of a
fluid mixture on its surfaces or in the spaces between the
fibers, elements, strands, or particles while permitting
passage of the remaining constituents.
A filter has no "chemical" affinity for a constituent of a
fluid mixture. The retention of the constituent by the filter
depends upon a mechanical entrapment of solid or liquid
particles because of their relatively large size compared
with the interstices or spaces between individual fibers,
elements, strands, or particles. The retained particles can
be removed by brushing, wiping, shaking, or similar
mechanical action.
FLUID MIXTURE
The phrase "fluid mixture" is used throughout the definitions
to mean (a) a gas and solid or liquid particles entrained
therein, (b) a liquid and gas entrained therein, or (c) a
plurality of gases.
GAS
Matter of very low density and viscosity, relatively great
expansion and contraction, with changes in pressure and
temperature, that is readily diffusive, with a tendency to
expand indefinitely, with molecules in free movement. The
term "gas" includes "vapor" (q.v.).
GASEOUS FLUID MIXTURE
The phrase "gaseous fluid mixture" is used throughout the
definitions to mean (a) a gas and solid or liquid particles
entrained therein or (b) a plurality of gases.
LIQUID SORBENT
A liquid capable of retaining part of a fluid mixture with
which it is contacted. The action in most cases is that of
selective retention (i.e., the sorbent removes only that part
of the fluid mixture for which it has the greatest
affinity).
REGENERATION
Restoration of the separatory material to the condition it
was in before the separatory process.
SEPARATING APPARATUS
The entire gas separating means, which consists of all of the
apparatus parts related to gas separation and includes
apparatus parts that are in addition to the separator.
SEPARATING MEDIUM (MEDIA)
Liquid sorbent or means that effects the separation into
constituent parts (e.g., deflector, filter, molecular sieve,
sorber, etc.). (Media has been used in the singular and in
the plural.)
SEPARATOR
The portion of the apparatus that consists of a separating
medium and the structure supporting, retaining, or
substantially confining the separating medium.
SOLID SORBENT
A solid sorbent is a solid material which separates a
constituent (e.g., a gas, vapor, etc.) from a fluid mixture
containing such constituents in a "quasi-chemical" manner.
The action in most instances is that of selective retention
(i.e., the sorbent removes only the part of the fluid mixture
for which it has the greatest affinity). The retained
constituent cannot be removed by shaking, brushing, or
similar mechanical action, but generally can be removed by
heating, pressure reduction, or use of a stripping or
denuding fluid.
TREATMENT
(a) With respect to the class subject matter, the term is
restricted to reversible and nonchemical changes in physical
characteristics of the fluid mixture or a separated
constituent (e.g., heating, cooling, humidity control,
agitating, pressure regulation, etc.). (b) With respect to
the media used to perform the gas separation or to a material
used to condition the fluid mixture for separation, the term
may include chemical preparation, reconditioning, or
reaction.
VAPOR
The gaseous state of matter that is liquid or solid under a
temperature of 0 deg.C and pressure of 760 mm Hg.
SUBCLASSES
Subclass:
1
MAGNETIC SEPARATING MEANS:
This subclass is indented under the class definition.
Apparatus having means to produce magnetic lines of force in
order to separate a constituent or to aid the separation of a
constituent from a fluid mixture.
(1) Note. The means may be either a permanent magnet or an
electromagnet.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 43 for a process using the
selective diffusion of gases through a solid, liquid, or
gaseous barrier, such as a semipermeable membrane.
210, Liquid Purification or Separation, subclass 96.2, 257.2,
and 321.6+ for apparatus having membranes or dialyzers for
separating liquids and subclasses 500.21+ for semipermeable
membranes used in the separation of liquids.
215, Bottles and Jars, subclass 261 for closures for bottles
and jars having a barrier permeable to gas and impermeable to
liquid.
Subclass:
5
Immobilized liquid membrane:
This subclass is indented under subclass 4. Apparatus in
which the barrier to gas diffusion is a liquid that is
supported or immobilized in or on a porous medium.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 44 for corresponding
processes. Patents are not cross-referenced from Class 95,
subclass 44 to this subclass based only on disclosure.
Therefore, relevant disclosures of gas separation apparatus
may be found in the process area.
Subclass:
6
Membrane to degasify liquid:
This subclass is indented under subclass 4. Apparatus which
is used to separate gas entrained in a liquid (e.g., by
selectively allowing the gas to pass through a barrier, such
as a membrane, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
155 for apparatus effecting the degasification of a liquid
without utilizing the selective diffusion of gases.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 46 for corresponding
processes. Patents are not cross-referenced from Class 95,
subclass 46 to this subclass based only on disclosure.
Therefore, relevant disclosures of gas separation apparatus
may be found in the process area.
Subclass:
7
Plural separate barriers:
This subclass is indented under subclass 4. Apparatus
comprising two or more distinctly separate barriers (e.g.,
membrane stack, etc.).
Subclass:
8
Parallel hollow fibers or cylinders (e.g., bundled, etc.):
This subclass is indented under subclass 7. Apparatus
comprising a plurality of hollow fibers or cylinders, where
the hollow fibers or cylinders are usually small-diameter
tubes bundled for parallel gas flow.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, subclass 323.2 for
plural distinct tubular separators and subclass 500.23 for
hollow fibers or cylindrical semipermeable membranes used in
the purifying or separating of liquids.
Subclass:
9
Barriers connected in series:
This subclass is indented under subclass 7. Apparatus in
which at least two separate barriers are arranged in series
for sequential gas diffusion or separation.
Subclass:
10
Hollow fiber or cylinder:
This subclass is indented under subclass 4. Apparatus in
which the gas is diffused through the wall of a hollow fiber
or cylinder (e.g., tube, etc.).
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, subclass 500.23 for
hollow fibers or cylindrical semipermeable membranes used to
purify or separate liquids.
Subclass:
11
Plural layers (e.g., laminated barrier, etc.):
This subclass is indented under subclass 4. Apparatus in
which the barrier for gas diffusion comprises two or more
distinguishable layers.
(1) Note. The layers or laminates may be of similar
composition. Where the barrier has been formed by evaporation
of one or more components to result in a surface layer
depleted in these components and the surface layer is
distinguishable from the remaining barrier thickness upon
subsequent inspection, the barrier is taken to be composed of
at least two distinguishable layers.
(2) Note. Plural layer (or laminated) membranes are often
referred to as composites. However, the use of this term as
applied to classification in this subclass does not include a
single porous barrier material impregnated with a second
material unless enough of the second material remains on the
exterior of the single porous barrier material to form a
distinguishable coating or second layer.
Subclass:
12
Organic compound containing layer:
This subclass is indented under subclass 11. Apparatus in
which at least one of the distinguishable layers contains an
organic compound.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 500.27 for
semipermeable membranes containing an organic compound which
are used for purifying or separating liquids.
Subclass:
13
Ring containing organic compound:
This subclass is indented under subclass 12. Apparatus in
which at least one of the distinguishable layers contains an
organic compound that is cyclic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
14 for gas diffusion membranes composed of a single layer
and having at least one ring containing organic compound.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 500.28 for
semipermeable membranes containing a cyclic organic compound
which are used for purifying or separating liquids.
Subclass:
14
Membrane having ring containing organic compound:
This subclass is indented under subclass 4. Apparatus in
which the barrier has at least one cyclic or ring containing
organic compound.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13 for gas diffusion apparatus with plural layers in which
at least one of such layers has a ring containing organic
compound.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 500.28 for
semipermeable membranes containing a cyclic organic compound
which are used for purifying or separating liquids.
Subclass:
15
ELECTRIC FIELD SEPARATION APPARATUS (E.G., ELECTRICAL
PRECIPITATOR, ELECTROSTATIC TYPE, ETC.):
This subclass is indented under the class definition.
Apparatus in which a constituent of the fluid mixture is
separated or precipitated by an electric field or discharge
means and includes an electrode arranged to emit, collect, or
control movement of charged particles (e.g., electrical or
Cottrell precipitators, electrostatic type, etc.); and
subcombinations thereof (e.g., electrodes for such apparatus,
etc.).
(1) Note. Treatment by an electric field to agglomerate or
coalesce constituents of the fluid mixture, where no
provision for separation or precipitation, as such, is
described, is classified in this subclass if the disclosure
relates to gas separation and the ultimate use of the
apparatus is for gas separation.
(2) Note. This subclass is the collecting home for means for
insuring nonconducting properties of the apparatus, other
than mere conductor sheath. Thus, patents claiming such means
with only nominal recitation of other features are classified
in this subclass rather than the indented subclasses, and
other patents with significant disclosures of such means are
cross-referenced to this subclass. However, patents
concerning insulation and having a disclosure or claims
pertaining to electrode retaining or supporting means are not
placed in this subclass but are found in subclass 88.
(3) Note. The line between Class 96 and the applicable
electrical classes is based on the amount of disclosure. If
there is a general utility or multiple purpose disclosure and
the claims are not limited to electric field separation
apparatus for this class (such as by including precipitator
electrodes), then classification is in the appropriate other
class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 for electric field separation apparatus combined with
magnetic separating means.
88 for insulation features combined with electrode retaining
or supporting means.
223 for gas separation apparatus combined with sterilizing
means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 57 for processes involving an
electric field for separating fluid mixtures.
174, Electricity: Conductors and Insulators, 137 for
insulators.
204, Chemistry: Electrical and Wave Energy, appropriate
subclasses; particularly 660+ for similar apparatus dealing
with the electrical separation of liquids and degasification
of liquid aided by electrical discharge involving the
conversion of constituents to other compounds. When such
chemical conversion is in doubt, placement of electrical
apparatus for degasifying liquid is proper for Class 96.
210, Liquid Purification or Separation, subclass 243 for
liquid separation apparatus with electrical insulating or
electricity discharging means.
250, Radiant Energy, 281 for processes and apparatus for
separating ionized material based on the differing
charge-to-mass ratios of such material.
313, Electric Lamp and Discharge Devices, appropriate
subclasses for electric space discharge devices, especially
231.01 for such discharge devices which have means for
passing a fluent material between the discharge electrodes.
315, Electric Lamp and Discharge Devices: Systems,
appropriate subclasses for miscellaneous systems for
supplying electrical energy to electric space discharge
devices of the gas or vapor ionization type.
327, Miscellaneous Active Electrical Nonlinear Devices,
Circuits, and Systems, appropriate subclasses and
particularly 530 for miscellaneous circuits having a
specific source of supply or bias voltage.
361, Electricity: Electrical Systems and Devices, 227 for
particle charging means and 230+ for ionizing means which are
not solely disclosed in connection with the separation of a
gaseous fluid mixture.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, 22 for processes of
disinfecting, deodorizing, preserving, or sterilizing using
direct contact with electrical or electromagnetic radiation,
and subclasses 186.04+ for electrostatic field or electrical
discharge apparatus for chemical treatment not combined or
associated with gas separation apparatus of the type found in
Class 96, subclasses 223+. Also, see the search class note to
Class 422 at the beginning of this class.
Subclass:
16
And radioactive or ultraviolet light ionizer:
This subclass is indented under subclass 15. Apparatus
having means to ionize a gaseous fluid mixture either by
radioactive or ultraviolet light means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
223 for nonelectrical separation apparatus combined with
sterilizing means.
Subclass:
17
Electric charge produced by friction (e.g., by gas flow,
etc.):
This subclass is indented under subclass 15. Apparatus in
which electrification of a separator part is accomplished by
friction between two solid bodies or by flow of gas across or
through a solid.
(1) Note. Placing a member in an electric field to charge
such member is not included in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
16 for electric field separation apparatus including
radioactive or ultraviolet light ionizers.
80 for electric field separation apparatus with voltage
supply means or circuitry.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 360 for means to ground a
filter and serving to prevent shock hazard, the static
electricity having no precipitating or separating function.
310, Electrical Generator or Motor Structure, 308 ;
particularly subclass 310 for charge accumulating
electrostatic generators of the friction type.
Subclass:
18
With control means responsive to sensed condition:
This subclass is indented under subclass 15. Apparatus in
which means are provided to detect an apparatus or a process
characteristic or change therein and to control or regulate
operation of the apparatus or process based on the detected
characteristic or change therein.
(1) Note. In this subclass and the subclasses indented
hereunder, a single means may be used both to detect the
characteristic or a change therein and to implement an action
in the apparatus based upon the detected characteristic or
change therein. There must be a positive action made by the
apparatus because of the detected characteristic or change
therein. An example is a pressure relief valve in which a
certain pressure must be reached before the valve opens to
relieve pressure differential across the valve. Another
example is a thermostat with a bimetallic element in which a
certain temperature must be reached before the element is
deformed enough to trip a switch, thus implementing a control
action in the apparatus as a result of the temperature or
change therein. Apparatus in which no positive action is made
by the single means as a result of the detected
characteristic or change therein is not classified in this
subclass or in the subclasses indented hereunder, but is
classified below. An example of such means would be an
ammeter for recording spikes in electric current to denote
sparking events, but without means for implementing any
reaction in the apparatus (e.g., to reduce electrode voltage,
etc.) as a result of such current spikes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
25 for electric field separation apparatus with programmed,
cyclic, or time responsive control means not responsive to a
sensed condition.
26 for electric field separation apparatus with measuring,
indicating, signal, or alarm means.
30 for electric field separation apparatus with cleaner and
interrelated shutdown or voltage adjustment means.
80 for electric field separation apparatus with voltage
supply or circuitry which is not specifically used to control
operation of the apparatus.
102 for chromatography type apparatus with control means
responsive to sensed condition.
109 for solid sorbent apparatus with control means
responsive to sensed condition.
156 for apparatus degasifying liquid with control means
responsive to sensed condition.
397 for gas separation apparatus with automatic control
means for gas or nongaseous constituent discharge and
subclasses 417+ for gas separation apparatus with signals,
indicators, measuring, or testing means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 2 for electric field
separation processes with control responsive to sensed
condition, subclass 25 for processes with recording or
signaling condition, and subclass 26 for processes with
timing of operation.
340, Communications: Electrical, 500 for automatic
electrical condition responsive indicating systems;
particularly subclasses 632+ for gas responsive devices.
Subclass:
19
Concentration or temperature sensing means:
This subclass is indented under subclass 18. Apparatus in
which means are provided to detect the amount of a
constituent present (e.g., dust, humidity, etc.) or a change
therein in the fluid mixture or the temperature or a change
therein of the fluid mixture under treatment and to control
or regulate the operation of the apparatus based on the
detected characteristic or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
407 for gas separation apparatus having temperature or
humidity responsive automatic control means for gas or
nongaseous constituent discharge.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 3 and 4 for
corresponding processes with control responsive to
concentration and temperature, respectively; subclasses 8+
and 14+ for nonelectrical separation processes with control
responsive to concentration and temperature, respectively.
236, Automatic Temperature and Humidity Regulation, for
automatic temperature or humidity control means, per se.
Subclass:
20
Arc, spark, or flashover sensing means:
This subclass is indented under subclass 18. Apparatus in
which means are provided to detect the presence or frequency
of sparking discharge in the gaseous fluid mixture (e.g., arc
or flashover of current bursts between differently charged
parts, such as between discharge and collector electrodes,
etc.) and to control or regulate the apparatus based on the
detected sparking.
(1) Note. A sparking event or its frequency may be detected
indirectly (e.g., by detecting short bursts of increasing
system electrical current or decreasing electrode voltage,
etc.), but must be specifically claimed to be classified in
this subclass.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 5 for electric field
separation processes with control responsive to sensed
sparking.
Subclass:
21
Current sensing means:
This subclass is indented under subclass 20. Apparatus in
which means are provided to detect electrical current or a
change therein and to control or regulate the operation of
the apparatus based on the detected electrical current or
change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22 for electric field separation apparatus with control
means responsive to electrical current, but without means
responsive to arc, spark, or flashover.
Subclass:
22
Current sensing means:
This subclass is indented under subclass 18. Apparatus in
which means are provided to detect electrical current or a
change therein and to control or regulate the operation of
the apparatus based on the detected electrical current or
change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
21 for electric field separation apparatus with control
means responsive to arc, spark, or flashover and also
responsive to electrical current.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 6 for corresponding
processes with control responsive to sensed electrical
current.
Subclass:
23
And voltage sensing means:
This subclass is indented under subclass 22. Apparatus in
which means are provided to detect voltage or a change
therein and to control or regulate the operation of the
apparatus based on the detected voltage or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
24 for electric field separation apparatus with control
means responsive to voltage, but without means responsive to
arc, spark, flashover, or electrical current.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 7 for electric field
separation processes with control responsive to sensed
voltage.
Subclass:
24
Voltage sensing means:
This subclass is indented under subclass 18. Apparatus in
which means are provided to detect electrode voltage or a
change therein and to control or regulate the apparatus based
on the detected voltage or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
23 for electric field separation apparatus with control
means responsive to voltage and electrical current.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 7 for electric field
separation processes with control responsive to sensed
voltage.
Subclass:
25
With programmed, cyclic, or time responsive control means:
This subclass is indented under subclass 15. Apparatus which
is provided with control means not directly responsive to a
sensed condition for (a) storing coded instructions or other
data necessary to regulate operation of the treating
apparatus, (b) repetitively regulating a sequence of
operational steps performed in or by the treating apparatus,
or (c) causing various system operations to occur according
to preset timing sequences or to last for predetermined
durations (e.g., timer switches, etc.).
(1) Note. This subclass includes any control means which
maintains an operating condition, predetermines apparatus
operation, or regulates repetition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for electric field separation apparatus with control
means responsive to sensed condition.
26 for electric field separation apparatus with measuring,
indicating, signal, or alarm means.
30 for electric field separation apparatus with cleaner and
interrelated shutdown adjustment means; particularly subclass
31, including means for sequential operation.
80 for electric field separation apparatus with voltage
supply or circuitry which is not specifically used to control
operation of the apparatus.
103 for chromatography type separation apparatus with
programmed, cyclic, or time responsive control means.
115 for solid sorbent apparatus with programmed, cyclic, or
time responsive control means.
424 for nonelectrical gas separation apparatus with timing
or changeable programming means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 26 for gas
separation processes with timing of operation.
Subclass:
26
With indicating, signal, or alarm means:
This subclass is indented under subclass 15. Apparatus which
is provided with means to indicate a characteristic or change
therein (e.g., of the fluid mixture, a separated constituent,
or the apparatus, etc.); or means to signal or alert the
status of such a characteristic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for electric field separation apparatus with control
means responsive to sensed condition.
25 for electric field separation apparatus with programmed,
cyclic, or time responsive control means.
117 for solid sorbent apparatus with indicating, signal, or
alarm means combined with programmed, cyclic, or time
responsive control means.
417 for gas separation apparatus with signals, indicators,
measuring, or testing means.
SEE OR SEARCH CLASS:
73, Measuring and Testing, for measuring and testing
procedures and apparatus.
95, Gas Separation: Processes, subclass 25 for gas treating
processes with recording or signaling condition.
116, Signals and Indicators, particularly 67 for alarms and
200+ for indicators.
374, Thermal Measuring and Testing, for thermal measuring
methods and devices, particularly 100 for thermometers and
similar devices.
Subclass:
27
With means to add charged solid or liquid particles to
gaseous fluid mixture:
This subclass is indented under subclass 15. Apparatus which
has means for commingling a solid or liquid agent carrying an
electrical charge with the gaseous fluid mixture being
separated, where the solid or liquid agent ionizes,
agglomerates, or collects constituents of the mixture or
otherwise electrically treats the gaseous fluid mixture.
(1) Note. Apparatus including a charged fluidized bed for
treatment of the gaseous fluid mixture is also found in this
subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
44 for electric field separation apparatus with wet film
type electrodes in which liquid is directly applied to an
electrode rather than being introduced into the gaseous fluid
mixture as charged discrete liquid particles.
52 for electric field separation apparatus with means for
vapor or liquid contact to treat a gaseous fluid mixture or a
separated constituent.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 58 for electric field
separation processes with addition of solid, gas, or vapor to
the gaseous fluid mixture; subclasses 64+ for electric field
separation processes including separation by liquid addition
to the gaseous fluid mixture; and subclasses 71+ for electric
field separation processes with addition of liquid to the
fluid mixture.
361, Electricity: Electrical Systems and Devices, 227 for
means charging particles (e.g., fluid spray, etc.), and see
the search note included there for other fields of search.
Subclass:
28
Electrode cleaner, apparatus part flusher, discharger, or wet
collector (e.g., wet film electrode, etc.):
This subclass is indented under subclass 15. Apparatus which
has (a) means to remove the constituent gathered on an
electrode, (b) means to remove the separated constituent by
air draft, suction, liquid, or positively acting discharging
means from parts other than electrodes of the apparatus, or
(c) means to provide a bath type collector or a moving liquid
film for the surface of a collecting electrode.
(1) Note. The constituent which has been separated is
usually nongaseous and adheres to the electrodes or has
fallen therefrom onto a collecting means (e.g., a series of
shelves, etc.).
(2) Note. A collector electrode with a moving liquid film
thereon is included herein (see subclass 45 in particular)
since a cleaning action is inherent during passage of the
liquid film over the electrode, even though the cleaning
action may not be specifically disclosed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
228 for nonelectrical gas separation apparatus with means
using liquid to clean the separating apparatus.
243 for nonelectrical gas separation apparatus with gas and
liquid contact means.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, for cleaning
means of various types not specific to electric field
separation apparatus.
55, Gas Separation, 282 for nonelectrical separating
apparatus with means to clean a separating medium.
95, Gas Separation: Processes, 74 for electrical separation
processes including cleaning of a collector electrode.
134, Cleaning and Liquid Contact With Solids, for various
cleaning processes and apparatus, not specific to electric
field separation apparatus.
Subclass:
29
Electrode or part thereof moved on or against another:
This subclass is indented under subclass 28. Apparatus
arranged so that electrodes (discharge or collector) or parts
thereof, in the case of sectionalized members, can move on or
rub against each other or contact each other (e.g., by
scraping or knocking against one another, etc.).
Subclass:
30
With shutdown or voltage adjustment means interrelated with
cleaning (e.g., cutting off flow of gaseous fluid mixture or
electrical current, etc.):
This subclass is indented under subclass 28. Apparatus
having an interlock, electrical control, or blocking means
(a) preventing normal operation of the apparatus or section
thereof, as by cutting off or diverting the flow of gaseous
fluid mixture or (b) disconnecting or effectively changing
the voltage in an electrical circuit to the apparatus or
section thereof, while the electrode cleaner is operating.
SEE OR SEARCH THIS CLASS, SUBCLASS:
80 for apparatus with details of voltage supply means or
circuitry not specifically interrelated with cleaning.
Subclass:
31
Sequential operation:
This subclass is indented under subclass 30. Apparatus
having means for cleaning the apparatus in sequence with
shutdown or voltage adjustment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
25 for electrical separation apparatus with programmed,
cyclic, or time responsive control means.
Subclass:
32
Vibrating, jarring, or rapping means:
This subclass is indented under subclass 28. Apparatus
having means to shake, jar, or set into a motion of small
amplitude and relatively high frequency the electrode itself
or its supporting means.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 300 for nonelectrical
separation apparatus with vibrating, jarring, or rapping
means for cleaning separating media.
95, Gas Separation: Processes, subclass 76 for electrical
separation processes with electrode cleaning by scraping or
vibrating.
Subclass:
33
Mounted on rotatable shaft (e.g., swinging arm or hammer,
etc.):
This subclass is indented under subclass 32. Apparatus in
which the vibrating, jarring, or rapping means is attached to
a rotatable shaft (e.g., swinging arm or hammer, etc.) and is
used to strike the electrode or its support or in some other
way transfer impact so that collected constituents are
dislodged from the electrode.
Subclass:
34
Having reciprocating rod or piston type activating or rapping
means:
This subclass is indented under subclass 33. Apparatus in
which a rod or piston is activated by or used to activate a
rotatable means to accomplish transfer of an impact so that
collected constituents are dislodged from the electrode.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37 for reciprocating rod or piston type activating or
rapping means not combined with rotatable means.
Subclass:
35
Activated by second swinging or rotatable means:
This subclass is indented under subclass 33. Apparatus in
which a shaft-mounted swinging or rotating means is caused to
transfer vibration or impact to the electrode by motion of a
second swinging or rotating means.
Subclass:
36
Magnet or solenoid activating means:
This subclass is indented under subclass 32. Apparatus in
which a magnetic or electromagnetic means is used to induce
vibration of the electrode or cause a second means to jar or
rap the electrode or its support means, so that a collected
constituent is removed.
SEE OR SEARCH CLASS:
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 255 for magneto-mechanical devices of
the core armature type for use as a rapping or jarring means
for electrostatic precipitators, but not solely disclosed for
use therein.
Subclass:
37
Reciprocating rod or piston type activating or rapping
means:
This subclass is indented under subclass 32. Apparatus in
which a rod or piston is moved in an axial direction to
strike the electrode or to activate a second means to rap the
electrode, so that a collected constituent is removed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
34 for reciprocating rod or piston type activating or
rapping means combined with rotatable means.
Subclass:
38
Horizontal striking means:
This subclass is indented under subclass 32. Apparatus in
which means are provided to strike the electrode or its
support means horizontally, in order to dislodge a collected
constituent.
Subclass:
39
Movably mounted electrode:
This subclass is indented under subclass 28. Apparatus
wherein the electrode is supported for movement relative to
the apparatus either to effect or perfect cleaning of the
apparatus.
(1) Note. There may be a plurality of electrodes, each being
moved separately at the time of cleaning.
SEE OR SEARCH THIS CLASS, SUBCLASS:
93 for electric field separation apparatus with nonrigid
support means for collector electrode.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 400 for nonelectrical
separation apparatus with means mounted or supported for
continuous motion.
95, Gas Separation: Processes, subclass 77 for electric
field separation processes involving a continuously moving
electrode.
Subclass:
40
Nonliquid contact cleaning means:
This subclass is indented under subclass 39. Apparatus in
which the cleaning is accomplished by contact of the
electrode with either a solid or gaseous agent.
Subclass:
41
Liquid bath for immersion of electrode:
This subclass is indented under subclass 39. Apparatus in
which the movable electrode is dipped or partially dipped
into a reservoir or body of liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
231 for nonelectrical gas separation apparatus with liquid
immersion cleaning means for separating media.
Subclass:
42
Endless belt carried or belt type electrode:
This subclass is indented under subclass 41. Apparatus in
which the movable electrode comprises (a) an electrode means
affixed to a continuous running length member or (b) a
running length (e.g., web, etc.) or belt type electrode.
Subclass:
43
Fluid contacting means (e.g., suction means, etc.):
This subclass is indented under subclass 28. Apparatus in
which cleaning is accomplished by causing a nonsolid agent to
contact the electrode or an apparatus part (e.g., by vacuum
means, etc.) to remove a collected constituent.
(1) Note. The agent may be the gaseous fluid mixture from
which the constituent is being removed or a gaseous fluid
from which the constituent has been separated if applied to a
part to be cleaned by pressure or suction means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
228 for nonelectrical gas separation apparatus with means
using liquid to clean the separating apparatus.
Subclass:
44
Liquid applying means for electrode (e.g., projection type,
etc.):
This subclass is indented under subclass 43. Apparatus in
which a liquid is brought into contact with electrode means
to move thereon, whereby cleaning is effected.
SEE OR SEARCH THIS CLASS, SUBCLASS:
27 for electric field separation apparatus having means to
add charged solid or liquid particles to the gaseous fluid
mixture.
52 for electric field separation apparatus with means to
treat a gaseous fluid by contacting it with a vapor or
liquid.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 75 for electric
field separation processes with electrode cleaning by liquid
flushing.
Subclass:
45
Weir or overflow wet film type:
This subclass is indented under subclass 44. Apparatus
having means to apply liquid to the electrode by permitting a
supply of liquid to run over the retaining walls therefor and
down over the electrode in overflowing fashion (as
contrasted, for example, with immersion or projection
spraying).
(1) Note. This subclass includes collector electrodes, per
se (e.g., not claiming liquid supply means), defining
structure limited or peculiar to liquid control either to
wash down the electrode or to supply liquid to provide a film
or wet-surfaced electrode.
Subclass:
46
Having movable spraying means for liquid:
This subclass is indented under subclass 44. Apparatus in
which spray nozzles or other movable means are mounted for
movement to distribute liquid across the electrode.
SEE OR SEARCH THIS CLASS, SUBCLASS:
281 for nonelectrical gas separation apparatus with movably
mounted liquid distributor.
Subclass:
47
Including means to recirculate liquid:
This subclass is indented under subclass 44. Apparatus in
which a flow path is provided to recycle at least a portion
of the liquid used to wash the electrode.
Subclass:
48
Including baffle for directing gas flow:
This subclass is indented under subclass 44. Apparatus in
which a baffle or deflector is arranged to funnel or redirect
gas flow.
(1) Note. The treatment casing walls are not considered to
serve as baffling means; in order to be classified in this
subclass, additional baffle or deflector means must be
arranged to affect gas flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
64 for electric field separation apparatus with perforated
baffle or gas diffuser for contact with ionizing electrode or
uniform flow in treating zone.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for nonelectrical separation
apparatus with deflector or impingement baffle.
95, Gas Separation: Processes, subclass 78 for electric
field separation processes using baffling, deflection, or
restriction of gas flow.
Subclass:
49
Cylindrical electrode:
This subclass is indented under subclass 44. Apparatus in
which at least one electrode is formed in the shape of a
cylinder.
Subclass:
50
Apparatus purging or flushing means using gas or liquid:
This subclass is indented under subclass 43. Apparatus in
which gas or liquid is brought into contact with an apparatus
part other than the electrodes (e.g., as in wet bottom
precipitators, etc.) in order to effect cleaning.
(1) Note. This definition includes apparatus in which a gas
draft of high volume is pumped through the apparatus to sweep
it clean of accumulated deposits without special contact
means expressly arranged for the electrodes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
43 for electric field separation apparatus including special
means expressly arranged to contact an electrode with
cleaning gas.
Subclass:
51
Electrode scraping, brushing, or wiping means:
This subclass is indented under subclass 28. Apparatus
having a solid agent for contacting the electrode to remove
encrustation or residue.
SEE OR SEARCH THIS CLASS, SUBCLASS:
40 for electrodes moved against brushes, scrapers, or wipers
for cleaning.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 76 for electric
field separation processes involving constituent removal from
collector electrodes.
Subclass:
52
With means for vapor or liquid contact (e.g., for gas
separation, cooling, conditioning, etc.):
This subclass is indented under subclass 15. Apparatus
having means to treat a gaseous fluid mixture or a separated
constituent by contact with a liquid or vapor (e.g., for
separation, heating, cooling, or conditioning, etc.).
(1) Note. Means to apply a fluid viscid coating or
conditioning agent to electrodes are included, where the
coating is substantially stationary, for the purpose of
treating the gaseous fluid mixture or separated constituent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41 for electrode immersion means wherein the cleaning means
may include a liquid useful for separation, such as a viscous
liquid.
44 for liquid applying means and weir or overflow wet film
type electrodes wherein the liquid is applied for cleaning.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 58, 63+, and 71+ for electric
field separation processes involving the addition of gas,
vapor, or liquid to the gaseous fluid mixture under
treatment.
Subclass:
53
Liquid spray means:
This subclass is indented under subclass 52. Apparatus in
which means are provided to distribute or spray liquid in the
gaseous fluid mixture to be treated.
Subclass:
54
Having alternating electrostatic field:
This subclass is indented under subclass 15. Apparatus in
which a constituent of the fluid mixture is treated or
separated by passage of the fluid mixture through or along an
alternating electrostatic field established between two
electrode members by an alternating current.
(1) Note. Alternating field ionizers, agglomerators,
coalescers, or collectors are classified herein.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 80 and 81 for
electric field separation processes using pulsing or
time-varying electric fields (e.g., AC, pulsed DC, etc.).
Subclass:
55
And serially arranged nonelectrical separator:
This subclass is indented under subclass 15. Apparatus
having a separator other than an electric field separation
apparatus arranged in the line of fluid flow.
(1) Note. This and indented subclasses do not provide for
(a) baffle means for directing or spreading flow for
distribution within the electric field separation apparatus
or for contact with ionizing electrodes, or (b) electrodes
modified to include baffling or flow distributing
arrangements to direct a flowing stream. Such apparatus is
more properly classified below.
(2) Note. This and indented subclasses do not include
interstitial, porous, or foraminous collector electrodes that
provide means for simultaneously filtering and precipitating
contaminants from a flowing stream. Such apparatus is more
properly classified below.
(3) Note. This and indented subclasses will take serially
arranged separators even broadly recited coming within the
definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
60 for flow distribution means and see (1) Note above.
65 for foraminous, porous, or interstitial collectors and
see (2) Note above.
SEE OR SEARCH CLASS:
55, Gas Separation, 315 for nonelectrical separation
apparatus with serial diverse separating media.
95, Gas Separation: Processes, 63 for electric field
separation processes including a diverse type separator.
Subclass:
56
Bypass or modification of flow of gaseous fluid mixture to
second stage:
This subclass is indented under subclass 55. Apparatus
including means for (a) directing at least a portion of the
gaseous fluid mixture to pass around the first separator or
(b) modifying the quantity or quality of gaseous fluid
mixture flowing from the first separator to the second.
SEE OR SEARCH CLASS:
55, Gas Separation, 309 for nonelectrical separation
apparatus with means to bypass separating media.
Subclass:
57
Precedent nonelectrical separator:
This subclass is indented under subclass 55. Apparatus in
which electric field separation apparatus follows downstream
of the nonelectrical separator.
Subclass:
58
Separator is single porous filter:
This subclass is indented under subclass 57. Apparatus in
which the nonelectrical separator is a single foraminous,
porous, or perforated filter.
Subclass:
59
Total flow of gaseous fluid mixture through porous collector
electrode:
This subclass is indented under subclass 55. Apparatus in
which all of the gaseous fluid mixture to be treated flows
through openings in a porous collector electrode.
SEE OR SEARCH THIS CLASS, SUBCLASS:
66 for electric field separation apparatus with total flow
of gaseous fluid mixture through an interstitial or porous
collector but without a serially arranged nonelectrical
separator.
Subclass:
60
Including gas flow distribution means:
This subclass is indented under subclass 15. Apparatus
having means or arrangements to direct, guide, or limit
(including stopping or redirecting) gas flow within the
apparatus.
(1) Note. The combination of electric field separation
apparatus and a pump for merely causing gas to flow through
the apparatus has not been recognized as flow distribution
and is not specifically provided for in this section of the
class.
(2) Note. This subclass and the subclasses indented
hereunder are intended to provide for flow distribution means
comprising (a) baffles and deflectors of all types and (b)
other structures or fixtures besides flow conduits or the
apparatus casing which are intentionally included or
positioned to affect flow distribution or which would present
a major inherent restriction to gas flow.
Subclass:
61
Spiralling inflow, centrifugal, or whirl generating surface
means:
This subclass is indented under subclass 60. Apparatus
having inlet means or means within the apparatus intimately
associated with electrical elements to impart a centrifugal,
vortical, or cyclonic flow pattern to the gas flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
55 for serially arranged diverse separators, one of which is
a vortical separator.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for nonelectrical separation
apparatus with deflectors and see the notes for related
search areas.
Subclass:
62
For contact with ionizing electrode or uniform flow in
treating zone:
This subclass is indented under subclass 60. Apparatus in
which the means guide or direct gas flow (a) into close
proximity to a discharging electrode for more complete
ionization or (b) for obtaining a less turbulent or more
uniform distribution of flow through the apparatus.
Subclass:
63
Having means for driving gas flow (e.g., fan, blower, etc.):
This subclass is indented under subclass 62. Apparatus which
includes a fan, blower, or other means to push or pull gas
through the apparatus.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 383 for nonelectrical
separation apparatus with remote fan or pump for gas flow,
subclasses 437+ for nonelectrical separation apparatus with
deflector and gas pump or fan, and subclasses 467+ for
nonelectrical separation apparatus with other types of gas
flow effecting means.
Subclass:
64
Perforated baffle or gas diffuser:
This subclass is indented under subclass 62. Apparatus which
contains at least one baffle penetrated by holes for gas flow
or other means to distribute or restrict the flow of gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
48 for apparatus with baffling means for gas and liquid
applying means for an electrode.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for nonelectrical separation
apparatus with deflector or impingement baffle.
95, Gas Separation: Processes, subclass 78 for electric
field separation processes using baffling, deflection, or
restriction of gas flow.
Subclass:
65
Collecting electrode modifies gas flow:
This subclass is indented under subclass 60. Apparatus in
which the distribution means comprises one or more collecting
electrodes shaped (e.g., as with a flow guide or directing
means, etc.) or positioned to modify the flow of gas.
(1) Note. A plurality of collecting electrodes may be
arranged in the apparatus to provide a gas flow pattern
having special characteristics.
SEE OR SEARCH THIS CLASS, SUBCLASS:
60 for baffles and perforated ionizing electrodes for
directing gas flow around or through ionizing electrodes.
Subclass:
66
Total flow of gaseous fluid mixture through interstitial or
porous collector:
This subclass is indented under subclass 65. Apparatus in
which the collecting electrode or electrodes are arranged and
fashioned in such manner as to require all of the gaseous
fluid mixture to flow through apertures, pores, or spaces of
such electrode(s).
(1) Note. Arrangements of collector means requiring total
flow of gaseous fluid mixture through such means as fibrous
massed material, particulate material, and the like are
considered to have inherent effect or influence on such
flow.
(2) Note. Spaces must be small enough to have a substantial
effect on flow of gaseous fluid mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59 for apparatus with total flow of gaseous fluid mixture
through porous collector and serially arranged nonelectrical
separator.
62 for apparatus with gas flow distribution means for
contact with ionizing electrode.
Subclass:
67
Zigzag running length:
This subclass is indented under subclass 66. Apparatus in
which the collecting electrode is shaped or positioned to
provide a substantially uninterrupted surface of zigzag
configuration.
(1) Note. Uninterrupted surfaces of zigzag configuration are
read as having inherent flow controlling influence on the
gaseous fluid mixture whether so stated in the patent or
not.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 521 for nonelectrical
separating means of zigzag shape.
Subclass:
68
Particle type collector:
This subclass is indented under subclass 66. Apparatus in
which the gaseous fluid mixture passes through the apertures,
pores, or spaces of a particle type collector.
Subclass:
69
Layered, laminated, or coated:
This subclass is indented under subclass 65. Apparatus in
which the collecting electrode is composed of plural layers.
(1) Note. Only collectors with coatings substantial enough
to compose complete and distinguishable layers are included
in this subclass.
Subclass:
70
Plural separate electrode members aligned in direction of gas
flow:
This subclass is indented under subclass 65. Apparatus in
which a plurality of separate and distinct collecting
electrode members are arranged in a serial fashion along the
direction of gas flow (e.g., as in Figure 1 below, etc.).
[figure] [caption]Figure 1
(1) Note. The separate electrode members may be attached to
a common frame or housing, provided that this attachment is
made only at the ends of each member. For this purpose, the
"ends" of each member are defined as the points most distant
from one another, measured perpendicular to the direction of
gas flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 for segmented collecting electrodes.
Subclass:
71
Segmented electrode:
This subclass is indented under subclass 65. Apparatus in
which the collecting electrode is composed of plural attached
segments, abutted or overlapped, to form a single combined
element (e.g., as in Figure 2 below, etc.). [figure]
[caption]Figure 2
SEE OR SEARCH THIS CLASS, SUBCLASS:
72 for similar type collecting electrodes with attached
projections.
Subclass:
72
Continuous electrode with integral or attached projections:
This subclass is indented under subclass 65. Apparatus in
which the collecting electrode is composed of a continuous
member with raised sections or connectedprojecting elements
extending from its sides or edges (e.g., as in Figure 3
below, etc.). [figure] [caption]Figure 3
SEE OR SEARCH THIS CLASS, SUBCLASS:
67 for a zigzag running length collector arranged to allow
total flow of gaseous fluid mixture therethrough.
71 for similar type collecting electrodes without integral
or attached projections.
Subclass:
73
Flow distribution means for parallel sections:
This subclass is indented under subclass 60. Apparatus in
which the flow distribution means is effective to restrict or
distribute gas flow to or through plural electrode sections
arranged to provide parallel flow paths.
Subclass:
74
With nonelectrical gas treating or conditioning means:
This subclass is indented under subclass 15. Apparatus which
has nonelectrical means to alter a characteristic of the
gaseous fluid mixture either before or during electric field
separation or to alter a characteristic of the separated
gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for electric field treatment or conditioning apparatus
with control means responsive to sensed condition.
52 for electric field separation apparatus with vapor or
liquid contacting means.
55 for electric field separation apparatus with serially
arranged nonelectrical separator.
61 for electric field separation apparatus with spiralling
inflow, centrifugal, or whirl generating surface means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 58, 63+, and 73 for electric
field separation processes with nonelectrical gas treating or
conditioning.
Subclass:
75
Plural diverse electric fields:
This subclass is indented under subclass 15. Apparatus in
which there are provided separate electric fields for
separation or treatment of the gaseous fluid mixture (a) by
different voltages, currents, or electrode arrangements, or
(b) by plural electric field separation units to provide
effectively different electric fields arranged in the
direction of flow of the gaseous fluid mixture.
(1) Note. A mere serial or continuous arrangement of
electrodes to produce an elongated or repetitive field of one
effective character is classified on some other basis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
54 for electric field separation apparatus using an
alternating electrostatic field.
55 for serially arranged, diverse type separators.
73 for flow regulating means for electric field separation
sections in parallel flow arrangement.
83 for electrodes supported or retained by a casing or duct
wall and not including features of voltage regulation or
special arrangements for electric fields.
Subclass:
76
One or more electrodes common to plural fields:
This subclass is indented under subclass 75. Apparatus in
which the electric fields are provided by means including
arrangements of electrodes such that one electrode or a group
or array of similar electrodes is common to the separate
electric fields.
Subclass:
77
Serially arranged ionizing and collecting or agglomerating
fields:
This subclass is indented under subclass 75. Apparatus in
which the electrode arrangement defines two electric fields,
one downstream of the other in the direction of flow of the
gaseous fluid mixture, the upstream field serving primarily
to electrically charge particles in the gaseous fluid mixture
and the downstream field serving primarily to collect or
coalesce the charged particles.
SEE OR SEARCH THIS CLASS, SUBCLASS:
75 for electric field separation apparatus having plural
diverse electric fields of other types.
76 for serially arranged ionizing and collecting or
agglomerating fields in which one set of electrodes is common
to both fields.
Subclass:
78
Adjacent parallel collector electrodes are differently
charged:
This subclass is indented under subclass 77. Apparatus in
which alternating collecting electrodes are charged to one
potential (voltage) and the remaining plates to a second
potential.
(1) Note. For example, if a positive potential is applied to
the first alternating set, then either a negative potential
or ground would be applied to the remaining electrodes, so
that adjacent electrodes would be maintained at differing or
opposite voltages.
Subclass:
79
Collecting electrodes are flat plates:
This subclass is indented under subclass 78. Apparatus in
which the electrodes are in the form of flat plates.
SEE OR SEARCH THIS CLASS, SUBCLASS:
60 for flat plate collecting electrodes arranged to
distribute gas flow.
Subclass:
80
With details of voltage supply means or circuitry:
This subclass is indented under subclass 15. Apparatus in
which there is more than a nominal recitation of a circuit
for voltage supply, power pack, or some other feature of
electric conduction to an electrode.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for voltage supply means involving control means
responsive to a sensed condition.
30 for voltage adjustment means interrelated with cleaning.
SEE OR SEARCH CLASS:
323, Electricity: Power Supply or Regulation Systems,
subclasses 220-354 for voltage magnitude control means not
restricted to electric field separation apparatus as by the
inclusion of electrodes.
327, Miscellaneous Active Electrical Nonlinear Devices,
Circuits, and Systems, appropriate subclasses and
particularly 530 for miscellaneous circuits having a
specific source of supply or bias voltage.
Subclass:
81
Closure interlock or removable section:
This subclass is indented under subclass 80. Apparatus in
which means are provided to make or break contact between a
power source and an electrode by placement or removal of a
movable member or section.
(1) Note. Closure interlocks or switches for deenergizing
the electrodes upon gaining access to the apparatus and other
nonautomatic electrical blocks are classified in this
subclass.
Subclass:
82
Circuit portions:
This subclass is indented under subclass 80. Apparatus which
includes specific power source components connected in the
form of a circuit.
(1) Note. Merely including a resistor, capacitor, or
transformer, for example, is not considered specific enough
for this subclass.
SEE OR SEARCH CLASS:
252, Compositions, 500 for compositions specialized for
conducting electricity.
Subclass:
83
Electrode retaining or supporting means:
This subclass is indented under subclass 15. Apparatus
having means to sustain one or more electrodes against
gravity in an operative position in the apparatus.
(1) Note. For classification herein, at least some
modification of the electrode for retaining it or some
mechanical coupling feature as in the case of replaceable
units (e.g., a slidably retained assembly, etc.) must be
specified.
(2) Note. The electrode means may be (a) retained in a
unitary assembly independent of the apparatus casing or (b)
supported directly by walls of the apparatus casing.
Subclass:
84
Plural electrode unit assembly type (e.g., unitized, etc.):
This subclass is indented under subclass 83. Apparatus in
which plural electrodes are maintained in a spaced
relationship and are retained as a unit assembly to thereby
permit simultaneous movement into or out of operative
position within the apparatus.
Subclass:
85
Disposable (e.g., collapsible or foldable cardboard, etc.):
This subclass is indented under subclass 84. Apparatus in
which the unit assembly (e.g., collapsible or foldable
cardboard, etc.) is not cleaned for reuse, but is disposed of
and replaced by a new unit.
Subclass:
86
Parallel disk or plate collector unit:
This subclass is indented under subclass 84. Apparatus in
which individual means for attracting or gathering ionized
particles are of flat or planar configuration and have
comparatively large surface area, and in which each such
means is held parallel to the others.
(1) Note. The structures of this subclass are usually
referred to as plate type collectors. Classified here are
collectors comprising flat disk or plate members, as
contrasted with spherical, tubular, or other such members
having surfaces of revolution.
SEE OR SEARCH THIS CLASS, SUBCLASS:
76 and 77+, for a parallel disk or plate collector unit
which comprises one field in a serially diverse field
arrangement.
85 for parallel plate type disposable collector assemblies.
87 for parallel disk or plate type collector arrangements
not qualifying as unitized assemblies.
Subclass:
87
Parallel disk or plate collector:
This subclass is indented under subclass 83. Apparatus in
which individual means for attracting or gathering ionized
particles are of flat or planar configuration and have
comparatively large surface area, and in which each such
means is held parallel to the others.
SEE OR SEARCH THIS CLASS, SUBCLASS:
86 for parallel disk or plate collectors retained as a
unitary assembly.
Subclass:
88
With insulation feature:
This subclass is indented under subclass 83. Apparatus in
which the electrode retaining or supporting arrangement has
electrical nonconductor means.
(1) Note. A mere housing or the like to keep parts dry is
not considered a nonconductor means for this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15 for nonconducting features other than a mere conductor
sheath to maintain an electrically insulated condition.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, particularly 137
for insulators, per se, and for electrical apparatus with
insulating means not limited to or solely disclosed for use
in gas separators (e.g., electric field separation apparatus,
etc.).
Subclass:
89
Tensioning means:
This subclass is indented under subclass 83. Apparatus in
which means are provided for maintaining an electrode under
tension, with the tension being due to more than the weight
of the electrode.
Subclass:
90
Spring or expansible bellows:
This subclass is indented under subclass 89. Apparatus in
which the tension is maintained by the use of spring means or
bellows which may be expanded by stretching, with the spring
means or bellows connected to the electrode in such a way as
to maintain tension therein.
Subclass:
91
Hanging weight:
This subclass is indented under subclass 89. Apparatus in
which the tension is provided by a hanging weight.
Subclass:
92
Suspensory means:
This subclass is indented under subclass 83. Apparatus in
which the sustaining means is such as to afford support by
making contact above the bottommost surface or face of the
electrode in its normal operating position (e.g., electrode
is held at the top, middle, etc.).
Subclass:
93
Nonrigid support (e.g., hanging electrode, etc.):
This subclass is indented under subclass 92. Apparatus in
which the electrode is supported in such a way as to allow
swinging movement about the point of support.
(1) Note. The provision of nonrigid damping means to reduce
electrode movement during use does not exclude placement in
this subclass.
Subclass:
94
Movably supported during use or for orientation:
This subclass is indented under subclass 83. Apparatus in
which electrode means is sustained against gravity in such a
manner as to afford movement thereof (a) while it is
operative as an electrode or (b) for adjustment or
orientation without disassembly.
SEE OR SEARCH THIS CLASS, SUBCLASS:
39 for movably mounted electrode assemblies so mounted for
cleaning.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 77 for electric
field separation processes involving a continuously moving
electrode.
Subclass:
95
Ionizing electrode details (e.g., coil, mat, corona
suppression, etc.):
This subclass is indented under subclass 15. Apparatus in
which an ionizing electrode stock material or composite has
been specially altered, configured, or constructed (e.g.,
coil, mat, corona suppression, etc.).
(1) Note. Although the vast majority of patents in this
section of the class must include discharge electrodes, not
all patents will be referred to this group. Ionizers claimed
by name only and having no unusual property will be omitted
from this group.
(2) Note. Electrodes having means (a) tending to limit the
building up of a concentrated charge or (b) preventing the
formation of a shortened discharge path, to thereby preclude
sparkover are included.
SEE OR SEARCH CLASS:
252, Compositions, 500 for compositions specialized for
conducting electricity and electrodes defined solely by their
composition. For electrodes not classified in Class 252, see
the search notes under Class 252, subclass 500.
361, Electricity: Electrical Systems and Devices, 230 for
means injecting ions into the atmosphere.
427, Coating Processes, 58 for processes of coating, per se,
wherein the product is electrical.
Subclass:
96
Filamentary or filar form:
This subclass is indented under subclass 95. Apparatus in
which the electrode material is comprised of fine wire.
(1) Note. A fine-tipped wire supported such that electron
flow is concentrated off the tip, fine coils of random or
specific pitch, spun wool, and the like are typical examples
of filamentary or filar form ionizers.
Subclass:
97
Sharpened point, serrated, or tip discharge:
This subclass is indented under subclass 95. Apparatus in
which the ionizing electrode is provided with a projecting
point or finely dimensioned projection, as compared with the
remainder or body of the ionizing electrode, or a tip to
provide for concentrated discharge of electrons.
Subclass:
98
Collecting electrode details (e.g., sheet type, running
length web, etc.):
This subclass is indented under subclass 15. Apparatus in
which a collecting electrode stock material or composite has
been specifically altered, configured, or constructed (e.g.,
sheet type, running length web, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
66 for collectors of interstitial, perforated, foraminous,
or porous construction through which the gaseous fluid
mixture to be separated is constrained to flow.
SEE OR SEARCH CLASS:
252, Compositions, 500 for electrodes defined solely in
terms of composition and see the search notes under Class
252, subclass 500 for electrodes not there classified.
427, Coating Processes, 58 for processes of coating, per se,
wherein the product is electrical.
Subclass:
99
Dielectric material containing or covering:
This subclass is indented under subclass 98. Apparatus in
which the collecting electrode is a composite element
containing or being coated with a nonconducting (insulating)
material or with substances having relatively high resistance
to the flow of electricity.
Subclass:
100
Multiple similar elements or sections (e.g., built up,
etc.):
This subclass is indented under subclass 98. Apparatus in
which the collecting electrode is comprised of multiple units
or items all of the same kind placed or secured together to
thereby define a composite member (e.g., built up, etc.).
Subclass:
101
CHROMATOGRAPHY TYPE APPARATUS:
This subclass is indented under the class definition.
Apparatus comprising a column containing (a) a liquid, known
as the "stationary liquid phase," supported by a base of
solid material to successively sorb therein the different
gases in a plurality of gases or (b) a solid sorbent to
successively sorb thereon the different gases in a plurality
of gases with or without subsequently successively eluting or
displacing the sorbed gases with a gas which is inert with
respect to the sorbed gases and sorbent.
(1) Note. The plurality of gases is usually allowed to flow
slowly through a column of sorbent. Different gases will pass
at different speeds through the column and will eventually be
separated into zones. The zones can be eluted by passing an
inert gas through the column and collecting the various
fractions.
(2) Note. Use of a liquid supported by a base of solid
material for the separation of mixture of gases is known as
"gas-liquid chromatography" or "GLC." Use of a solid sorbent
without a liquid phase present is known as "gas-solid
chromatography." Other terms used when referring to
chromatography type apparatus include: "gas chromatography"
or "GC," "vapor-phase chromatography" or "VPC," "gas-liquid
partition chromatography," "vapor fractometry," "capillary
column gas chromatography" or "CC-GC," and "partition
chromatography."
(3) Note. Sometimes a "carrier" gas is mixed with or used to
propel a plurality of gases to be separated through the
chromatography apparatus.
(4) Note. The plurality of gases to be separated may be
obtained by vaporizing a liquid. The liquid that is injected
into the chromatography column is vaporized, and then the
resulting vapors are separated in the chromatography column.
SEE OR SEARCH THIS CLASS, SUBCLASS:
108 for solid sorbent apparatus of a more general nature
used to sorb gases or liquids from a gas phase.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 19.02, 23.22+, and 23.35+
for chromatography processes including analysis of eluted or
displaced gas.
95, Gas Separation: Processes, 82 for chromatography
processes.
210, Liquid Purification or Separation, 198.2 for apparatus
and subclasses 635 and 656+ for processes for the
purification or separation of liquids using chromatography.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclass 89 for gas
chromatography apparatus involving chemical reaction and
associated with an analyzer, structured indicator, or
manipulative laboratory device.
Subclass:
102
With control means responsive to sensed condition:
This subclass is indented under subclass 101. Apparatus in
which means are provided to detect an apparatus or process
characteristic or a change therein and to control or regulate
operation of the apparatus or process based upon the detected
characteristic or change therein.
(1) Note. In this subclass a single means may be used both
to detect the characteristic or a change therein and to
implement an action in the apparatus based upon the detected
characteristic or change therein. There must be a positive
action made by the means because of the detected
characteristic or change therein. An example is a pressure
relief valve in which a certain pressure must be reached
before the valve opens to relieve pressure differential
across the valve. Another example is a thermostat with a
bimetallic element in which a certain temperature must be
reached before the element is deformed enough to trip a
switch, thus implementing a control action in the apparatus
as a result of the temperature or change therein. Apparatus
in which no positive action is made by the single means as a
result of the detected characteristic or change therein is
not classified in this subclass, but is classified below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for electric field separation apparatus with similar
control means.
103 for chromatography type apparatus with programmed,
cyclic, or time responsive control means.
109 for solid sorbent apparatus with similar control means.
156 for degasifying means for liquid with similar control
means.
397 for gas separation apparatus with automatic control
means for gas or nongaseous constituent discharge.
417 for gas separation apparatus with signals, indicators,
measuring, or testing means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 1 for gas separation
processes with control responsive to sensed condition,
subclass 25 for processes with recording or signaling
condition, and subclass 26 for processes with timing of
operation.
Subclass:
103
With programmed, cyclic, or time responsive control means:
This subclass is indented under subclass 101. Apparatus
which is provided with control means not directly responsive
to a sensed condition for (a) storing coded instructions or
other data necessary to regulate operation of the apparatus,
(b) repetitively regulating a sequence of operational steps
performed in or by the apparatus, or (c) causing various
operations to occur according to preset timing sequences or
to last for predetermined durations (e.g., timer switches,
etc.).
(1) Note. This subclass is meant broadly and includes any
control means which predetermines apparatus operation or
regulates repetition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
25 for electric field separation apparatus with similar
control means.
115 for solid sorbent apparatus with similar control means.
424 for gas separation apparatus with timing or changeable
programming means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 26 for processes
with timing of operation.
Subclass:
104
Plural separate and distinct stages:
This subclass is indented under subclass 101. Apparatus
which has two or more separate and distinct stages or zones
for chromatos:graphic treatment of the plurality of gases
where these stages may either be contained within the same
column or housed in separate columns.
SEE OR SEARCH THIS CLASS, SUBCLASS:
55 for apparatus with serially arranged electric field and
nonelectrical separators.
121 for apparatus with plural solid sorbent beds.
134 for solid sorbent apparatus with plural basically
diverse separating means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 86 for
chromatos:graphic processes using plural separate columns.
Subclass:
105
Including injection system or inlet fluid distributor:
This subclass is indented under subclass 101. Apparatus
which includes means specifically structured and disposed at
the chromatography column inlet to inject or distribute the
plurality of gases or a liquid for treatment therein.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 89 for the process
of injecting a plurality of gases or a liquid into a
chromatography type apparatus without causing separation
thereof.
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, for processes and apparatus for the transfer
of fluent material through a flow confining system, the
source and receiver parts of which are normally separable.
Subclass:
106
Having system connector or coupling:
This subclass is indented under subclass 101. Apparatus
which is provided with a flow connector or coupling in tubing
between different sections of a chromatography system.
(1) Note. This subclass is intended to include only those
systems with couplings to connect nonchromatography type
stages with chromatography or nonchromatography type stages.
SEE OR SEARCH THIS CLASS, SUBCLASS:
104 for apparatus having plural separate chromatos:graphic
stages.
SEE OR SEARCH CLASS:
285, Pipe Joints or Couplings, for connectors or tubing
couplings, per se.
Subclass:
107
Having imbedded baffle or flow distributor:
This subclass is indented under subclass 101. Apparatus
which has been constructed with (a) a static solid surface
member (e.g., deflector, etc.) or (b) other static layer of
solid material (e.g., nonsorbent particles, etc.) inside the
column in order to redirect or channel gas flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
152 for solid sorbent apparatus with a baffle for directing
gas flow, which may be imbedded in the solid sorbent bed.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for deflectors of diverse type used
to redirect the flow of gas at some point in the treatment
apparatus.
95, Gas Separation: Processes, subclass 85 for corresponding
processes. Patents are not cross-referenced from Class 95,
subclass 85 to this subclass based only on disclosure.
Therefore, relevant disclosures of gas separation apparatus
may be found in the process area.
Subclass:
108
SOLID SORBENT APPARATUS:
This subclass is indented under the class definition.
Apparatus in which a solid sorbent (e.g., particulate or
fibrous mass of solids, etc.) is used to retain on its
internal or external surfaces a constituent of the fluid
mixture passing in contact therewith.
(1) Note. A solid sorbent is a solid material which
separates one or more constituents (e.g., gas, vapor, etc.)
from a fluid mixture containing such constituents in a
"quasi-chemical" manner. The action in most instances is that
of selective retention (i.e., the sorbent removes only that
part of the fluid mixture for which it has the greatest
affinity). The retained constituent cannot be removed by
shaking, brushing, or similar mechanical action, but can
generally be removed by heating, pressure reduction, or use
of a stripping or denuding fluid.
A filter (e.g., particulate solids, etc.) has no particular
"chemical" affinity for a constituent of a fluid mixture. The
separation in the case of a filter depends on a mechanical
entrapment of solid particles because of their relatively
large size compared with the interstices or spaces between
individual elements of the filter. The retained particles can
be removed by brushing, wiping, shaking, or similar
mechanical action.
(2) Note. "Absorption" is the holding of a constituent by
cohesion or capillary action in the pores of a solid.
"Adsorption" is the ability of a sorbent to hold or
concentrate gases, liquids, or dissolved substances upon its
surface.
(3) Note. "Gettering" or use of a "getter" material may
involve one or more different processes to remove an
undesired constituent from a gaseous mixture, usually within
an enclosed space, by sorption, chemical reaction, etc. Class
96 provides for getter apparatus under the class definition
except where such apparatus is part of a more comprehensive
apparatus properly classified elsewhere. This subclass
provides for getter apparatus of the solid sorbent type only.
See the search class notes below and the class definition for
class lines between Class 96 and other applicable classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101 for chromatography type apparatus which contains or
utilizes a solid sorbent.
SEE OR SEARCH CLASS:
62, Refrigeration, for processes and apparatus with solid
desiccant disposed in a refrigeration system.
95, Gas Separation: Processes, 82 and 90+ for corresponding
chromatography and solid sorption processes, respectively.
123, Internal-Combustion Engines, 519 for an
internal-combustion engine including a charge-forming device
having a fuel vapor recovery and storage system wherein the
fuel vapor storage system is an adsorbent canister.
206, Special Receptacle or Package, subclass .7 for
receptacles and packages for storing gas containing an
adsorbent in which the gas is stored and subclass 204 for
receptacles and packages including means for removing water
or water vapor from the atmosphere within a container or the
surface of container content.
210, Liquid Purification or Separation, 660 for ion exchange
or selective sorption processes; subclasses 150+ for
apparatus for liquid purification or separation consisting of
solid contact means to increase the surface area of a liquid
in a gas-liquid contact device whereby the contact is
enhanced; and subclasses 263+ for liquid purification or
separation apparatus of the particulate material type (e.g.,
ion exchange or sand bed, etc.).
252, Compositions, 181.1 for gas getter compositions for
electric lamps, electric space discharge devices, and similar
devices and subclass 184 for absorptive or bindive and
chemically yieldive compositions under the class definition.
313, Electric Lamp and Discharge Devices, subclass 481 for
cathode ray tube envelopes with getter or gas and subclasses
547+ and 553+ for electric lamp or discharge devices with
getter means.
417, Pumps, 48 for electrical or getter type pump
apparatus.
420, Alloys or Metallic Compositions, for metal alloys or
compositions used for gas (e.g., hydrogen, etc.) storage.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, 129 for chemical
reactors, particularly subclasses 177+ for particulate
catalyst beds and other solid, extended surface fluid contact
reaction means.
423, Chemistry of Inorganic Compounds, for processes of
chemical storage and release (e.g., subclass 658.2 for
direct decomposition of a binary compound containing
hydrogen, etc.).
445, Electric Lamp or Space Discharge Component or Device
Manufacturing, 53 for manufacturing processes including
evacuating, degasifying, or getter or fluent material
introduction, particularly subclass 55 for gettering.
502, Catalyst, Solid Sorbent, or Support Therefor: Product or
Process of Making, for solid sorbent, per se; and 20 for the
regeneration of sorbents. See section III of this class for
the line between these two classes.
Subclass:
109
With control means responsive to sensed condition:
This subclass is indented under subclass 108. Apparatus in
which means are provided to detect an apparatus or process
characteristic or a change therein and to control or regulate
operation of the apparatus or process based upon the detected
characteristic or change therein.
(1) Note. In this subclass and the subclasses indented
hereunder, a single means may be used both to detect the
characteristic or a change therein and to implement an action
in the apparatus or process based upon the detected
characteristic or change therein. There must be a positive
action made by the means because of the detected
characteristic or change therein. An example is a pressure
relief valve in which a certain pressure must be reached
before the valve opens to relieve pressure differential
across the valve. Another example is a thermostat with a
bimetallic element in which a certain temperature must be
reached before the element is deformed enough to trip a
switch, thus implementing a control action in the apparatus
as a result of the temperature or change therein. A third
example is a separating medium which experiences a change in
mass due to accumulation of a separated constituent, causing
the separating medium to move to a position of nonuse or
regeneration. Apparatus in which no positive action is made
by the single means as a result of the detected
characteristic or change therein is not classified in this
subclass or the subclasses indented hereunder, but is
classified below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for electrical precipitators with similar control means.
102 for chromatography type apparatus with similar control
means.
115 for solid sorbent apparatus with programmed, cyclic, or
time responsive control means.
156 for liquid degasifying means with similar control
means.
397 for other gas separation apparatus with automatic
control means for gas or nongaseous constituent discharge.
417 for other gas separation apparatus with signals,
indicators, measuring, or testing means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 1 for gas separation
processes with control responsive to sensed condition,
subclass 25 for processes with recording or signaling
condition, and subclass 26 for processes with timing of
operation.
Subclass:
110
Fluid flow sensing means:
This subclass is indented under subclass 109. Apparatus
which is provided with means to detect fluid flow or a change
therein and to control operation of the apparatus based upon
the detected fluid flow or change therein.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 23 for processes
with control responsive to gas flow rate.
Subclass:
111
Concentration sensing means:
This subclass is indented under subclass 109. Apparatus
which is provided with means to detect concentration of a
constituent present in a fluid stream (e.g., humidity, etc.)
or a change therein and to control operation of the apparatus
based upon the detected concentration or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
19 for electrical separation apparatus with control means
responsive to concentration or temperature.
407 for other gas separation apparatus having temperature or
humidity responsive control means for gaseous or nongaseous
constituent discharge.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 8 for gas separation
processes with control responsive to concentration.
236, Automatic Temperature and Humidity Regulation, for
control apparatus of this type, per se.
Subclass:
112
Temperature sensing means:
This subclass is indented under subclass 109. Apparatus
which is provided with means to detect temperature or a
change therein and to control operation of the apparatus
based upon the detected temperature or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
19 for electrical separation apparatus with control means
responsive to concentration or temperature.
173 for degasifying means for liquid with control means
responsive to temperature.
407 for other gas separation apparatus having temperature or
humidity responsive control means for gaseous or nongaseous
constituent discharge.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 14 for gas separation
processes with control responsive to temperature.
236, Automatic Temperature and Humidity Regulation, for
control apparatus of this type, per se.
Subclass:
113
Pressure sensing means:
This subclass is indented under subclass 109. Apparatus
which is provided with means to detect pressure or a change
therein and to control operation of the apparatus based upon
the detected pressure or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
174 for degasifying means for liquid with control means
responsive to pressure.
400 for other gas separation apparatus having gas pressure
responsive automatic control means for gaseous or nongaseous
constituent discharge.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 15 for processes
with control responsive to sensed temperature and pressure
and subclasses 19+ for processes with control responsive to
sensed pressure.
Subclass:
114
And programmed, cyclic, or time responsive control means:
This subclass is indented under subclass 113. Apparatus
which is also provided with control means not directly
responsive to a sensed condition for (a) storing coded
instructions or other data necessary to regulate operation of
the apparatus, (b) repetitively regulating a sequence of
operational steps performed in or by the apparatus, or (c)
causing various operations to occur according to preset
timing sequences or to last for predetermined durations
(e.g., timer switches, etc.).
(1) Note. This subclass includes any control means which
maintains an operating condition, predetermines apparatus
operation, or regulates repetition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
25 for electrical separation apparatus with programmed,
cyclic, or time responsive control means not responsive to a
sensed condition.
103 for chromatography type separation apparatus with
programmed, cyclic, or time responsive control means not
responsive to a sensed condition.
115 for solid sorbent apparatus with programmed, cyclic, or
time responsive control means not responsive to a sensed
condition.
424 for other gas separation apparatus having timing or
changeable programming means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 26 for gas treating
processes with timing of operation.
Subclass:
115
With programmed, cyclic, or time responsive control means:
This subclass is indented under subclass 108. Apparatus
which is provided with control means not directly responsive
to a sensed condition for (a) storing coded instructions or
other data necessary to regulate operation of the apparatus,
(b) repetitively regulating a sequence of operational steps
performed in or by the apparatus, or (c) causing various
operations to occur according to preset timing sequences or
to last for predetermined durations (e.g., timer switches,
etc.).
(1) Note. This subclass includes any control means which
maintains an operating condition, predetermines apparatus
operation, or regulates repetition.
(2) Note. Apparatus not specifically designed or used as
described above (e.g., with mere use of a rotating gas
distributor, etc.) are more appropriately classified below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
25 for electrical separation apparatus with programmed,
cyclic, or time responsive control means.
103 for chromatography type separation apparatus with
programmed, cyclic, or time responsive control means.
114 for solid sorbent apparatus with programmed, cyclic, or
time responsive control means combined with control means
responsive to sensed pressure.
124 for solid sorbent apparatus with plural solid sorbent
beds and rotating gas distributor means not combined with
control means.
424 for other gas separation apparatus having timing or
changeable programming means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 26 for gas treating
processes with timing of operation.
Subclass:
116
Regulating or metering means:
This subclass is indented under subclass 115. Apparatus
which is also provided with means to maintain or adjust an
apparatus or process characteristic using regulator or meter
type components (e.g., programmed pressure regulator,
metering valve, flow restrictor, etc.).
Subclass:
117
Indicating, signal, or alarm means:
This subclass is indented under subclass 115. Apparatus
which is also provided with means to indicate or signal an
apparatus or process characteristic or change therein (e.g.,
to indicate the extent of solid sorbent saturation, etc.), or
with means to alert the condition of such a characteristic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
417 for other gas separation apparatus with signals,
indicators, measuring, or testing means.
SEE OR SEARCH CLASS:
73, Measuring and Testing, for measuring and testing
processes and apparatus.
95, Gas Separation: Processes, subclass 25 for gas treating
processes with recording or signaling condition.
116, Signals and Indicators, particularly 67 for alarms and
subclasses 200+ for indicators.
374, Thermal Measuring and Testing, for thermal measuring
methods and devices, particularly 100 for thermometers and
other devices.
Subclass:
117.5
With indicating means (e.g., color change indicator, etc.):
This subclass is indented under subclass 108. Apparatus
having information giving means of an audible or visual
nature that give information about an apparatus or process
characteristic or change therein.
(1) Note. Included in this definition are solid sorbents
containing a substance that changes color in order to provide
a visual indication of the saturation level of the solid
sorbent.
Subclass:
118
Soluble or deliquescent type (e.g., calcium chloride, etc.):
This subclass is indented under subclass 108. Apparatus in
which the solid sorbent dissolves in the constituent retained
or sorbed therein or thereon.
(1) Note. Soluble sorbents of this type are usually composed
of a metallic salt or brine material used to retain liquids
or condensable gases from a gaseous fluid mixture.
(2) Note. These soluble type sorbents are also called
"hygroscopic" materials since they are frequently used to
remove moisture from a contacting gaseous fluid mixture.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 91 for corresponding
processes using soluble or deliquescent material. Patents are
not cross-referenced from Class 95, subclass 91 to this
subclass based only on disclosure. Therefore, relevant
disclosures of gas separation apparatus may be found in the
process area.
Subclass:
119
Supported by holder with drip openings:
This subclass is indented under subclass 118. Apparatus
which comprises a support or holder with one or more drip
openings to allow drainage of the dissolved solid sorbent.
Subclass:
120
Including liquid contacting means:
This subclass is indented under subclass 119. Apparatus
which is provided with means to allow the entering fluid
mixture to contact the dissolved solid sorbent as it drains
through the holder drip openings.
Subclass:
121
Plural solid sorbent beds:
This subclass is indented under subclass 108. Apparatus
which comprises two or more masses of solid sorbent which may
be either combined within a single housing or distributed
into separate units.
(1) Note. Plural layers of solid sorbent and support
material (e.g., laminated, corrugated, etc.) do not
constitute plural beds unless clearly separable one from
another for staged use (e.g., separate and distinct packing
units, divided section, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
104 for chromatography apparatus with plural separate
stages.
134 for solid sorbent apparatus with plural basically
diverse separating means.
154 for solid sorbent which has been layered or laminated on
a second solid sorbent or nonsorbent support.
Subclass:
122
With recovery or separation means for desorbing fluid:
This subclass is indented under subclass 121. Apparatus
which includes a recovery or separation means for a fluid
used to regenerate the solid sorbent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
130 for plural solid sorbent beds with means to regenerate
sorbent but without recovery means for desorbing fluid.
143 for solid sorbent apparatus with sorbent regenerating
means but without plural beds or recovery means for desorbing
fluid.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 90 for solid sorption
processes which may include regeneration of the solid
sorbent.
Subclass:
123
Movable solid sorbent bed (e.g., fluidized bed, etc.):
This subclass is indented under subclass 122. Apparatus in
which (a) at least one of the solid sorbent beds is arranged
for movement, either by physically moving a housing
containing the solid sorbent or by causing the solid sorbent
alone to move from one place to another, or (b) the solid
sorbent is caused to be moved about or fluidized by a gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
125 for plural solid sorbent beds in which at least one of
the beds is caused to rotate.
150 for a movable or fluidized solid sorbent bed, but
without plural beds or recovery means for desorbing fluid.
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, 359 for
processes and subclasses 576+ for apparatus utilizing fluid
current for conveying or suspending of dried solids.
55, Gas Separation, subclass 474 for general gas separating
apparatus with particulate solids movement during use or
agitating means therefor.
95, Gas Separation: Processes, 107 for processes using
moving solid sorbent.
406, Conveyors: Fluid Current, for pneumatic solids
conveyors, particularly 86 and 136+ for means to fluidize
the conveyed solids.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, 139 for fluidized
bed chemical reactors.
Subclass:
124
With rotating gas distributor:
This subclass is indented under subclass 121. Apparatus in
which a rotating means is positioned to distribute the fluid
mixture to be treated over one or more of the solid sorbent
beds.
SEE OR SEARCH THIS CLASS, SUBCLASS:
125 for plural solid sorbent beds in which at least one
solid sorbent bed is rotating.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 113 for processes
utilizing a rotating housing containing fixed solid sorbent.
Subclass:
125
Rotating solid sorbent bed:
This subclass is indented under subclass 121. Apparatus in
which one or more of the solid sorbent beds is rotated about
one or more axes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
124 for plural nonrotating solid sorbent beds provided with
a rotating gas distributor.
150 for single movable solid sorbent bed apparatus.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 113 for processes
utilizing a rotating housing containing fixed solid sorbent.
Subclass:
126
With heat exchange means:
This subclass is indented under subclass 121. Apparatus
which is provided with means to heat or to cool the solid
sorbent, the fluid mixture, a separated constituent, or a gas
stream.
(1) Note. This subclass includes apparatus utilizing heat
exchange to regenerate or recondition solid sorbent for use
after such regeneration.
SEE OR SEARCH THIS CLASS, SUBCLASS:
146 for single solid sorbent bed apparatus with means for
regenerating the sorbent by heat exchange.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 114 for solid sorption
processes with plural indirect heat transfer steps.
Subclass:
127
And means for driving gas flow (e.g., pump, blower,
compressor, etc.):
This subclass is indented under subclass 126. Apparatus
which is also provided with means for driving or effecting
gas flow (e.g., pump, blower, compressor, etc.).
SEE OR SEARCH CLASS:
55, Gas Separation, 467 for general gas separation apparatus
with gas flow effecting means.
417, Pumps, for pumps used to drive fluid flow.
Subclass:
128
Compressor:
This subclass is indented under subclass 127. Apparatus in
which the means for driving gas flow is a device used to
pressurize gas (e.g., reciprocating piston type, bellows,
rotary type, etc.).
SEE OR SEARCH CLASS:
417, Pumps, appropriate subclasses, for pumps and
compressors, per se.
Subclass:
129
Zigzag arrangement of flat solid sorbent beds for parallel
flow:
This subclass is indented under subclass 121. Apparatus in
which flat rectangular solid sorbent beds are arranged and
secured in a holder device in a zigzag fashion such that gas
flow is directed through only one layer of sorbent before
leaving the apparatus.
Subclass:
130
With means for regenerating solid sorbent:
This subclass is indented under subclass 121. Apparatus
which is provided with means to remove a sorbed constituent
from the solid sorbent, thus regenerating the solid sorbent
for further use.
SEE OR SEARCH THIS CLASS, SUBCLASS:
122 for plural solid sorbent beds with recovery means for
desorbing fluid.
143 for solid sorbent apparatus with regenerating means but
without plural sorbent beds.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 90 for solid sorption
processes which may include regeneration of the solid
sorbent.
Subclass:
131
Serial:
This subclass is indented under subclass 121. Apparatus in
which the plural solid sorbent beds are arranged for
sequential gas flow.
Subclass:
132
Diverse type:
This subclass is indented under subclass 131. Apparatus in
which the serial solid sorbent beds are of different types
(e.g., material composition, particulate vs. sheet form,
etc.).
(1) Note. Solid sorbent beds which are merely different in
particle size or sheet thickness are not of "diverse type"
and as such are not classified in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
134 for plural diverse gas separating means with no more
than one solid sorbent bed.
Subclass:
133
Plural canisters:
This subclass is indented under subclass 121. Apparatus in
which two or more containers are used to hold the solid
sorbent beds.
SEE OR SEARCH THIS CLASS, SUBCLASS:
136 for plural diverse separating means in separate housings
or casings.
Subclass:
134
Plural diverse separating means:
This subclass is indented under subclass 108. Apparatus
which comprises two or more different types of gas separating
means, at least one of which must be a solid sorbent (e.g.,
solid sorbent and mechanical filtering means, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
132 for plural serial diverse type solid sorbent beds.
SEE OR SEARCH CLASS:
55, Gas Separation, 315 for plural serial basically diverse
gas separating media without the use of a solid sorbent.
Subclass:
135
At least one a dispersed or impregnated solid sorbent bed:
This subclass is indented under subclass 134. Apparatus
which includes at least one bed of solid sorbent (a)
dispersed in a second sorbing or nonsorbing medium (e.g.,
sorbent particles bonded in a matrix or set in a mass of
filler material, etc.) or (b) impregnated with a second
nonsorbing material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
153 for dispersed or impregnated solid sorbent beds; not
combined with any other type of gas separating means.
Subclass:
136
Plural housings or casings for separating components:
This subclass is indented under subclass 134. Apparatus
which is provided with plural, usually separate, containers
for different separating components or means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
104 for chromatography type apparatus with plural separate
stages.
133 for solid sorbent apparatus with plural solid sorbent
beds in separate canisters.
Subclass:
137
With means to compress or compact solid sorbent bed:
This subclass is indented under subclass 134. Apparatus in
which a spring or other compacting means is provided to exert
continual physical force on a solid sorbent bed to maintain
close packing of individual solid particles.
SEE OR SEARCH THIS CLASS, SUBCLASS:
149 for solid sorbent apparatus with means to compress or
compact a solid sorbent bed; not combined with any other type
of gas separating means.
Subclass:
138
Including means to access or replace solid sorbent:
This subclass is indented under subclass 134. Apparatus
which is provided with a removable solid sorbent cartridge,
opening to access solid sorbent, or other means to allow
replacement of spent or used solid sorbent with new or
regenerated solid sorbent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
151 for solid sorbent apparatus with means to access or
replace solid sorbent; not combined with any other type of
gas separating means.
Subclass:
139
Including baffle for modifying gas flow (e.g., flow vanes,
diffuser, etc.):
This subclass is indented under subclass 134. Apparatus in
which a static solid surface member (e.g., deflector, etc.)
is provided to modify or distribute a gas flowing in contact
therewith (e.g., flow vanes, gas diffuser, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
107 for chromatography type apparatus with imbedded baffle
or flow distributor.
152 for solid sorbent apparatus with a baffle for directing
gas flow.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for general gas separation apparatus
with deflector means.
Subclass:
140
And means for driving gas flow:
This subclass is indented under subclass 139. Apparatus
which is also provided with means for driving or effecting
gas flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127 for plural solid sorbent beds with heat exchange means
and means for driving gas flow, such as a pump, blower, or
compressor.
142 for solid sorbent apparatus with plural diverse
separating means and with means for driving gas flow, not
including a baffle for modifying gas flow.
SEE OR SEARCH CLASS:
55, Gas Separation, 467 for general gas separation apparatus
with gas flow effecting means.
Subclass:
141
And means regenerating solid sorbent:
This subclass is indented under subclass 139. Apparatus
which is also provided with means to desorb a retained
constituent from the solid sorbent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
122 for plural solid sorbent beds with recovery or
separation means for desorbing fluid.
130 for plural solid sorbent beds with means for
regenerating solid sorbent.
143 for solid sorbent apparatus with means for regenerating
solid sorbent, without plural diverse separating means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 90 for solid sorption
processes which may include regeneration of the solid
sorbent.
Subclass:
142
With means for driving gas flow:
This subclass is indented under subclass 134. Apparatus
which is provided with means for driving or effecting gas
flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127 for plural solid sorbent beds with heat exchange means
and means for driving gas flow, such as a pump, blower, or
compressor.
SEE OR SEARCH CLASS:
55, Gas Separation, 467 for general gas separation apparatus
with gaseous fluid flow effecting means.
Subclass:
143
With means regenerating solid sorbent:
This subclass is indented under subclass 108. Apparatus
which is provided with means to desorb the retained
constituent from the solid sorbent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
122 for plural solid sorbent beds with recovery means for
desorbing fluid.
130 for plural solid sorbent beds with means for
regenerating solid sorbent.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 90 for solid sorption
processes which may include regeneration of the solid
sorbent.
Subclass:
144
Gas contacting means:
This subclass is indented under subclass 143. Apparatus in
which the solid sorbent is regenerated by a means contacting
gas therewith.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 97, 104+, and 122+ for
processes of gas separation using solid sorption with sweep
gas used to help remove a sorbed constituent.
Subclass:
145
Means applies steam to solid sorbent:
This subclass is indented under subclass 144. Apparatus in
which the contacting means is provided to apply steam to the
solid sorbent to effect regeneration thereof.
Subclass:
146
Heat exchanger to regenerate:
This subclass is indented under subclass 143. Apparatus in
which the solid sorbent is regenerated by heating or cooling
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
126 for plural solid sorbent beds with heat exchange means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 87 for
chromatography processes with heating or cooling and
subclasses 114+ for solid sorption processes with plural
indirect heat transfer steps.
Subclass:
147
Having mountable casing:
This subclass is indented under subclass 108. Apparatus
which is provided with means to support or attach a container
for the solid sorbent.
SEE OR SEARCH CLASS:
55, Gas Separation, 490 for apparatus with fixed media
securing or retaining means.
Subclass:
148
Storage or food receptacle:
This subclass is indented under subclass 147. Apparatus
which is attached to or utilized in connection with a storage
or food container.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, subclass 347 for
self-basting cooking utensils (e.g., wherein condensed vapors
are returned to the utensil, etc.).
220, Receptacles, subclass 366.1 and 367.1+ for vented
closures, particularly subclasses 369+ for antispattering
covers.
Subclass:
149
With means to compress or compact solid sorbent bed:
This subclass is indented under subclass 108. Apparatus in
which a spring or other compacting means is provided to exert
a continual physical force on a solid sorbent bed to maintain
close packing of individual solid sorbent particles.
SEE OR SEARCH THIS CLASS, SUBCLASS:
137 for solid sorbent apparatus with plural diverse
separating means also having means to compress or compact a
solid sorbent bed.
Subclass:
150
Movable solid sorbent bed (e.g., fluidized bed, etc.):
This subclass is indented under subclass 108. Apparatus in
which (a) the solid sorbent is arranged for movement, either
by physically moving the housing containing the solid sorbent
or by causing the solid sorbent alone to move from one place
to another or (b) the solid sorbent is moved about or
fluidized by a gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
123 for movable plural solid sorbent beds with recovery
means for desorbing fluid.
125 for plural solid sorbent beds in which at least one of
the beds is rotated.
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, 359 for
processes and subclasses 576+ for apparatus utilizing fluid
current conveying or suspending of dried solids.
55, Gas Separation, subclass 474 for general gas separating
apparatus with particulate solids movement during use of
agitating means therefor.
95, Gas Separation: Processes, 107 for processes using a
moving solid sorbent.
406, Conveyors: Fluid Current, for pneumatic solids
conveyors, particularly 86 and 136+ for means to fluidize
the conveyed material.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, 139 for fluidized
bed chemical reactors.
Subclass:
151
Including means to access or replace solid sorbent:
This subclass is indented under subclass 108. Apparatus
which is provided with a removable solid sorbent cartridge,
opening to access solid sorbent, or other means to allow
replacement of spent or used solid sorbent with new or
regenerated solid sorbent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
138 for solid sorbent apparatus combined with diverse
separating means and means to access or replace solid
sorbent.
Subclass:
152
Including baffle for modifying gas flow (e.g., imbedded in
solid sorbent, etc.):
This subclass is indented under subclass 108. Apparatus in
which a static solid surface member (e.g., deflector, etc.)
is provided to modify or distribute gas flowing in contact
therewith, such as might be imbedded in a solid sorbent bed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
107 for chromatography type apparatus with imbedded baffle
or flow distributor.
139 for solid sorbent apparatus with plural diverse
separating means and a baffle for directing gas flow.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for general gas separation apparatus
with deflector means.
210, Liquid Purification or Separation, 285 for liquid
purification or separation apparatus of the particulate
material type (e.g., ion exchange or sand bed, etc.) provided
with at least one baffle completely or partially embedded in
the particulate material.
Subclass:
153
Dispersed or impregnated solid sorbent bed:
This subclass is indented under subclass 108. Apparatus in
which the solid sorbent is (a) dispersed in a second sorbing
or nonsorbing medium (e.g., sorbent particles bonded in a
matrix or set in a mass of filler material, etc.) or (b)
impregnated with a second nonsorbing material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
135 for dispersed or impregnated solid sorbent beds combined
with other basically diverse separating means.
SEE OR SEARCH CLASS:
502, Catalyst, Solid Sorbent, or Support Therefor: Product or
Process of Making, appropriate subclasses for dispersed or
impregnated solid sorbents, per se, and for the process of
making the same. See section III of this class for the line
between these two classes.
Subclass:
154
Layered or laminated (e.g., solid sorbent on support
material, etc.):
This subclass is indented under subclass 108. Apparatus in
which the solid sorbent is distributed as a distinct layer on
or between laminates of a second solid sorbent or nonsorbent
support material.
SEE OR SEARCH CLASS:
502, Catalyst, Solid Sorbent, or Support Therefor: Product or
Process of Making, appropriate subclasses for layered or
laminated solid sorbent or support material, per se, and for
the process of making the same. See section III of this class
for the line between these two classes.
Subclass:
155
DEGASIFYING MEANS FOR LIQUID:
This subclass is indented under the class definition.
Apparatus which is provided with means to eliminate or drive
out a gas from a liquid.
(1) Note. In order to distinguish the apparatus of this
subclass from that used for distillation as found in Class
202, which is used to separate a liquid constituent by
volatilization from a plurality of liquids, only degasifying
means providing for the removal of a normally gaseous
constituent at STP (i.e., standard temperature of 0 deg.C and
pressure of 760 mm Hg) from a liquid will be classified in
this subclass. If, however, a constituent is at a temperature
above its boiling temperature for a particular pressure, then
the constituent is presumed to be a gas, and a patent to
apparatus for removing the constituent will be placed here.
See search class notes below.
(2) Note. The apparatus of this subclass may be used to
degasify a liquid which was formed as a result of a prior
system treatment (e.g., regeneration of a liquid that was
used to remove a gas from a plurality of gases, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
134 for degasifying means for liquid combined with solid
sorbent apparatus.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 156 for processes of
degasifying liquid combined with liquid contacting and
subclasses 241+ for other processes of degasifying liquid.
202, Distillation: Apparatus, for apparatus used to separate
liquids by volatilization, the most volatile of which must be
a liquid above a temperature of 0 deg.C at 760 mm Hg
pressure.
210, Liquid Purification or Separation, for processes and
apparatus for separating liquids.
261, Gas and Liquid Contact Apparatus, for apparatus used to
mix liquids and gases by contacting.
266, Metallurgical Apparatus, 208 for apparatus for treating
liquefied metal by application of vacuum that may include
degasification of the liquefied metal.
366, Agitating, for processes and apparatus providing
agitation without degasification of liquid.
Subclass:
156
With control means responsive to sensed condition:
This subclass is indented under subclass 155. Apparatus in
which means are provided to detect an apparatus or process
characteristic or a change therein and to control or regulate
operation of the apparatus or process based upon the detected
characteristic or change therein.
(1) Note. In this subclass and the subclasses indented
hereunder, a single means may be used both to detect the
characteristic or a change therein and to implement an action
in the apparatus based upon the detected characteristic or
change therein. There must be a positive action made by the
means because of the detected characteristic or change
therein. An example is a pressure relief valve in which a
certain pressure must be reached before the valve opens to
relieve pressure differential across the valve. Another
example is a thermostat with a bimetallic element in which a
certain temperature must be reached before the element is
deformed enough to trip a switch, thus implementing a control
action in the apparatus as a result of the temperature or
change therein. Apparatus in which no positive action is made
by the single means as a result of the detected
characteristic or change therein is not classified in this
subclass or in the subclasses indented hereunder, but is
classified below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for electrical precipitators with similar control means.
102 for chromatography type apparatus with similar control
means.
109 for solid sorbent apparatus with similar control means.
397 for other gas separation apparatus having automatic
control means for gaseous or nongaseous constituent
discharge.
417 for other gas separation apparatus having signals,
indicators, measuring, or testing means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 1 for gas separation
processes with control responsive to sensed condition,
subclasses 25+ for processes with recording or signaling
condition, and subclass 26 for processes with timing of
operation.
Subclass:
157
With liquid level sensing means:
This subclass is indented under subclass 156. Apparatus
which is provided with means to detect the height of a liquid
level or a change therein and to control operation of the
apparatus based upon the detected level or change therein.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 24 for processes
with control responsive to sensed liquid level.
Subclass:
158
Separator inlet or outlet valve responsive to float level:
This subclass is indented under subclass 157. Apparatus in
which a flow control member is positioned at a fluid inlet or
outlet and is actuated as a result of change in position of a
liquid level float.
SEE OR SEARCH CLASS:
137, Fluid Handling, 386 for other liquid level responsive
or maintaining systems.
Subclass:
159
Plural floats:
This subclass is indented under subclass 158. Apparatus
which has more than one float for sensing liquid level.
Subclass:
160
And temperature sensing means:
This subclass is indented under subclass 159. Apparatus
which is also equipped with means to detect temperature or a
change therein and to control operation of the apparatus
based upon the detected temperature or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
112 for solid sorbent apparatus with control means
responsive to sensed temperature.
173 for other liquid degasifying means with control means
responsive to sensed temperature.
407 for other gas separation apparatus having temperature or
humidity responsive automatic control means for gaseous or
nongaseous constituent discharge.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 14 for gas separation
processes with control responsive to sensed temperature.
236, Automatic Temperature and Humidity Regulation, for
control apparatus of this type, per se.
Subclass:
161
And pressure sensing means:
This subclass is indented under subclass 159. Apparatus
which is also equipped with means to detect pressure or a
change therein and to control operation of the apparatus
based upon the detected pressure or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for solid sorbent apparatus with control means
responsive to sensed pressure.
164 166, 169, 172, and 174, for other means to degasify
liquid with control means responsive to sensed pressure.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 15 and 19+ for
processes with control responsive to sensed pressure.
Subclass:
162
Plural float-controlled valves:
This subclass is indented under subclass 158. Apparatus
which has more than one valve actuated by a float detecting
liquid level.
Subclass:
163
At least one is gas outlet valve:
This subclass is indented under subclass 162. Apparatus in
which at least one of the valves is used to release gas
removed from the liquid under treatment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
165 for other means to degasify liquid with a gas outlet
valve responsive to float level.
Subclass:
164
And pressure sensing means:
This subclass is indented under subclass 163. Apparatus
which is also equipped with means to detect pressure or a
change therein and to control operation of the apparatus
based upon the detected pressure or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for solid sorbent apparatus with control means
responsive to sensed pressure.
161 166, 169, 172, and 174, for other means to degasify
liquid with control means responsive to sensed pressure.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 15 and 19+ for
processes with control responsive to sensed pressure.
Subclass:
165
Gas outlet valve responsive to float level:
This subclass is indented under subclass 158. Apparatus in
which a gas removed from the liquid under treatment is
released through a valve controlled in response to the
position of a liquid level float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
163 for means to degasify liquid equipped with liquid level
sensing means and plural valves, at least one of which is a
gas outlet valve.
Subclass:
166
And pressure sensing means:
This subclass is indented under subclass 165. Apparatus
which is also equipped with means to detect pressure or a
change therein and to control operation of the apparatus
based upon the detected pressure or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for solid sorbent apparatus with control means
responsive to sensed pressure.
161 164, 169, 172, and 174, for other means to degasify
liquid and control means responsive to sensed pressure.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 15 and 19+ for
processes with control responsive to sensed pressure.
Subclass:
167
Centrifugal separating means:
This subclass is indented under subclass 165. Apparatus in
which means are provided to separate entrained gas (e.g.,
bubbles, etc.) from the liquid under treatment by centrifugal
force, causing the gas and liquid to rotate as by tangential
flow about a central axis which forces the degasified liquid
to move away from the axis and the separated gas to move
toward the axis of rotation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
171 for tangential flow or centrifugal separating means with
liquid outlet valve responsive to float level.
177 for centrifugal or rotating defoaming means.
195 for centrifugal type flow modifier with means to reduce
pressure.
216 for centrifugal type means with flow slinger, spreader,
disperser, or restrictor.
SEE OR SEARCH CLASS:
55, Gas Separation, 447 for fixed gas whirler or rotator gas
separating means.
95, Gas Separation: Processes, subclass 185 for liquid
contacting processes with degasification of liquid by liquid
flow modifying or mechanical agitating, and subclass 261 for
processes of degasifying liquid by agitating or liquid flow
modifying with the use of centrifugal force.
Subclass:
168
Liquid outlet valve responsive to float level:
This subclass is indented under subclass 158. Apparatus in
which degasified liquid is released through a valve
controlled in response to the level of a liquid level float.
Subclass:
169
And pressure sensing means:
This subclass is indented under subclass 168. Apparatus
which is also equipped with means to detect pressure or a
change therein and to control operation of the apparatus
based upon the detected pressure or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for solid sorbent apparatus with control means
responsive to sensed pressure.
161 164, 166, 172, and 174, for other means to degasify
liquid with control means responsive to sensed pressure.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 15 and 19+ for
processes with control responsive to sensed pressure.
Subclass:
170
And recycle means (e.g., for degasified liquid, etc.):
This subclass is indented under subclass 168. Apparatus
which is also provided with means to recirculate fluid
outside the means for degasifying liquid and return it to the
same for secondary processing (e.g., recycling degasified
liquid back to the apparatus inlet for further treatment,
etc.).
(1) Note. The recirculated fluid may be gas, liquid, or a
mixture of the two (e.g., liquid which has not been
completely degasified may be recycled for further treatment,
etc.).
SEE OR SEARCH CLASS:
55, Gas Separation, 338 for gas separation apparatus with
recycle means.
Subclass:
171
And tangential flow or centrifugal separating means:
This subclass is indented under subclass 168. Apparatus (a)
which is also provided with means for tangential fluid flow
(e.g., having an inlet or outlet arranged for directing fluid
flow about a central axis, etc.) or (b) in which means are
provided to separate entrained gas from the liquid under
treatment by centrifugal force, causing the gas and liquid to
rotate about a central axis which forces degasified liquid to
move away from the axis and separated gas to move toward the
axis of rotation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
167 for centrifugal separating means with gas outlet valve
responsive to float level.
177 for centrifugal or rotating defoaming means.
195 for centrifugal type flow modifier with means to reduce
pressure.
216 for centrifugal type means with flow slinger, spreader,
disperser, or restrictor.
SEE OR SEARCH CLASS:
55, Gas Separation, 447 for fixed gas whirler or rotator gas
separating means.
95, Gas Separation: Processes, subclass 185 for liquid
contacting processes with degasification of liquid by liquid
flow modifying or mechanical agitating and subclass 261 for
processes of degasifying liquid by agitating or liquid flow
modifying with the use of centrifugal force.
Subclass:
172
With pressure sensing means:
This subclass is indented under subclass 158. Apparatus
which is equipped with means to detect pressure or a change
therein and to control operation of the apparatus based upon
the detected pressure or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for solid sorbent apparatus with control means
responsive to sensed pressure.
161 164, 166, 169, and 174, for other means to degasify
liquid with control means responsive to sensed pressure.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 15 and 19+ for
processes with control responsive to sensed pressure.
Subclass:
173
With temperature sensing means:
This subclass is indented under subclass 156. Apparatus
which is provided with means to detect temperature or a
change therein and to control operation of the apparatus
based upon the detected temperature or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
112 for solid sorbent apparatus with control means
responsive to sensed temperature.
160 for means to degasify liquid with separator inlet or
outlet valve responsive to plural floats and temperature
sensing means.
407 for other gas separation apparatus having temperature or
humidity responsive automatic control means for gaseous or
nongaseous constituent discharge.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 14 for gas separation
processes with control responsive to sensed temperature.
236, Automatic Temperature and Humidity Regulation, for
control apparatus of this type, per se.
Subclass:
174
With pressure sensing means:
This subclass is indented under subclass 156. Apparatus
which is provided with means to detect pressure or a change
therein and to control operation of the apparatus based upon
the detected pressure or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for solid sorbent apparatus with control means
responsive to sensed pressure.
161 164, 166, 169, and 172, for other means to degasify
liquid with control means responsive to sensed pressure.
400 for gas separation apparatus having gas pressure
responsive automatic control means for gaseous or nongaseous
constituent discharge.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 15 and 19+ for
processes with control responsive to sensed pressure.
Subclass:
175
Sonic means (i.e., using sound waves):
This subclass is indented under subclass 155. Apparatus in
which the separation is effected or enhanced by the energy of
compressional vibratory waves in a fluid medium, the waves
being below, within, or above the audible spectrum.
(1) Note. Pressure pulses in a fluid generated merely by
intermittent discharge of a gas are not considered to be
compressional vibratory waves under this definition. However,
compressional vibratory waves under this definition may be
produced by intermittent discharge of a gas, as in a siren.
SEE OR SEARCH THIS CLASS, SUBCLASS:
176 for defoaming apparatus not using sound waves.
389 for other gas separation apparatus using sound waves.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 30 for processes of
degasifying liquid using sound waves.
Subclass:
176
Defoaming means:
This subclass is indented under subclass 155. Apparatus in
which means are provided to remove a substantially stable
aggregation of dispersed gas or vapor bubbles (e.g., froth or
foam, etc.) from a liquid.
(1) Note. In order to qualify under this definition, the
liquid must be disclosed as containing a froth or foam prior
to treatment. Apparatus for treating mixtures which may foam
or merely contain a composition predisposed to produce a foam
after agitation, etc., are classified below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
175 for defoaming means using sound waves.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 157 for processes of
gas separation with liquid contacting and defoaming, and
subclass 242 for processes of degasifying liquid by
defoaming.
Subclass:
177
Centrifugal or rotating separator:
This subclass is indented under subclass 176. Apparatus in
which means are provided to separate entrained gas (e.g.,
bubbles, etc.) from the liquid under treatment (a) by
centrifugal force, causing the gas or liquid to rotate as by
tangential flow about a central axis which forces degasified
liquid to move away from the axis and separated gas to move
toward the axis of rotation or (b) by a rotating separator,
causing the liquid to be agitated, breaking a liquid film
surrounding the gas (i.e., foam) and liberating the entrained
gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
167 for centrifugal separating means with gas outlet valve
responsive to float level.
171 for tangential flow or centrifugal separating means with
liquid outlet valve responsive to float level.
195 for centrifugal type flow modifier with means to reduce
pressure.
216 for centrifugal type means with flow slinger, spreader,
disperser, or restrictor.
SEE OR SEARCH CLASS:
55, Gas Separation, 447 for fixed gas whirler or rotator gas
separating means.
95, Gas Separation: Processes, subclass 185 for liquid
contacting processes with degasification of liquid by liquid
flow modifying or mechanical agitating, and subclasses 260+
for processes of degasifying liquid by agitating or liquid
flow modifying.
Subclass:
178
Having flow-through foam restrictor or eliminator (e.g.,
screen, etc.):
This subclass is indented under subclass 177. Apparatus
which is also equipped with a porous screen or filter to
remove foam (i.e., entrained gas bubbles) from the liquid
passing therethrough by (a) physically excluding the foam or
(b) breaking a liquid film surrounding entrained gas (i.e.,
foam) and liberating the entrained gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179 for defoaming means having flow-through foam restrictor
or eliminator without a centrifugal or rotating separator.
Subclass:
179
Having flow-through foam restrictor or eliminator (e.g.,
screen, etc.):
This subclass is indented under subclass 176. Apparatus
which is equipped with a porous screen or filter to remove
foam (i.e., entrained gas bubbles) from the liquid passing
therethrough by (a) physically excluding the foam or (b)
breaking a liquid film surrounding entrained gas (i.e., foam)
and liberating the entrained gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
178 for defoaming means having flow-through foam restrictor
or eliminator combined with a centrifugal or rotating
separator.
Subclass:
180
Having recycle means (e.g., for foam or separated liquid,
etc.):
This subclass is indented under subclass 176. Apparatus
which is provided with means to redirect a fluid flowing from
a separation stage back through an apparatus inlet for
secondary processing, as in the recycle of collected foam or
the corresponding separated liquid back to an apparatus inlet
for further treatment.
SEE OR SEARCH CLASS:
55, Gas Separation, 338 for gas separation apparatus with
recycle means.
Subclass:
181
And liquid contact means:
This subclass is indented under subclass 155. Apparatus in
which means are provided to contact a gaseous fluid mixture
with a liquid in order to remove a gas from the gaseous fluid
mixture and means are provided to remove the gas from the
liquid.
(1) Note. An example of such means would be an extended
surface for enhanced liquid contact with a gaseous fluid
mixture to scrub or sorb a constituent from the gaseous fluid
mixture, followed by separate means for degasifying the
liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
52 for electrical separation apparatus with means for vapor
or liquid contact.
120 for soluble or deliquescent solid sorbent apparatus with
means to contact a liquid containing dissolved solid sorbent
with a gaseous fluid mixture.
243 for other gas separation apparatus using liquid contact
means combined with means to further handle process
constituents before, during, or after separation. See the
search class note to Class 261 below.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 149 for processes of gas
separation with liquid contacting.
261, Gas and Liquid Contact Apparatus, for gas and liquid
contact apparatus, per se, with or without separation, and
for gas and liquid contact processes, per se, without
separation (e.g., humidification, etc.). See the class line
to Class 261 in section III of this class for further details
about gas and liquid contact apparatus and processes.
Subclass:
182
With separator for multiple liquids:
This subclass is indented under subclass 155. Apparatus
which includes means to separate a mixture of two or more
liquids.
(1) Note. The separation may be a physical separation into
two bodies having a fluid interface or may include one or
more liquid phases retained in a separating media (e.g.,
filter, etc.), leaving the remaining liquid as a separate
unretained phase.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 421 for other types of gas
separation apparatus in which a plurality of liquids are
separated from each other.
95, Gas Separation: Processes, subclass 253 for processes of
degasifying a liquid in which a plurality of liquids are
separated from each other.
202, Distillation: Apparatus, for distillation apparatus, per
se.
203, Distillation: Processes, Separatory, 43 for separatory
distillation processes including a step of removing a
distillate or residue by liquid-liquid extraction, and other
appropriate subclasses for processes in which a distillate
includes two immiscible liquids which are separated.
210, Liquid Purification or Separation, for processes and
apparatus of separating or purifying liquids, per se.
Subclass:
183
Reservoir with three or more outlets, each for different
fluid:
This subclass is indented under subclass 182. Apparatus
which is constructed with a container or compartment having
at least three discharge conduits, each conduit passing a
fluid which differs in state or nature from each other fluid
passing in other conduits.
Subclass:
184
Horizontal reservoir:
This subclass is indented under subclass 183. Apparatus in
which the longest axis of the reservoir is in a horizontal
plane.
Subclass:
185
With heat exchange means:
This subclass is indented under subclass 183. Apparatus
which includes a means to heat or cool a system fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
201 for liquid degasification apparatus with heat exchange
means and pressure reducing means.
218 for other liquid degasification apparatus with heat
exchange means.
SEE OR SEARCH CLASS:
210, Liquid Purification and Separation, 175 for apparatus
and 774+ for processes for separating liquids or solids from
liquids with the aid of heat exchange means.
Subclass:
186
And internal filter or screen (e.g., coalescer, etc.):
This subclass is indented under subclass 185. Apparatus
which also includes a filter or screen, such as a coalescer
device, inside the reservoir.
Subclass:
187
Tank or tank part movably mounted on support (e.g., for
deaerating aircraft lubricating oil, etc.):
This subclass is indented under subclass 155. Apparatus in
which degasification occurs in a reservoir, the whole or any
part (e.g., inlet or outlet pipe, inner casing, etc.) of
which is arranged for movement relative to a fixed support.
(1) Note. Patents dealing with the problem of removing air
from the oil system of an aircraft which assumes various
positions in flight are found here.
Subclass:
188
Including means to remove mist entrained in gas:
This subclass is indented under subclass 155. Apparatus
which is provided with a member or members in a gas outlet
flow path acting to remove entrained liquid droplets from a
gas.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 and appropriate subsequent other
subclasses for structure of the means to remove mist, per
se.
203, Distillation: Processes, Separatory, subclass 40 for
distillation processes directed to removing entrained
particles of liquid from a vapor.
Subclass:
189
Baffle, filter, or screen:
This subclass is indented under subclass 188. Apparatus
which comprises (a) a static solid surface interposed in the
gas flow path on which the gas impinges, or (b) a mass or
member through which the gas passes and which retains the
liquid droplets.
SEE OR SEARCH THIS CLASS, SUBCLASS:
197 and 220, for other liquid degasifying means with a
baffle type deflector.
219 for liquid degasifying means with a fluid filter.
SEE OR SEARCH CLASS:
55, Gas Separation, 434, 490+, 520, and 521 for the structure
of a deflector or filter, per se, for separating a
constituent from a gaseous fluid mixture; and subclasses 522+
for the specific material used in a deflector or filter.
Subclass:
190
Plural, serially arranged:
This subclass is indented under subclass 189. Apparatus
which comprises at least two similar or dissimilar baffles,
filters, or screens, with one arranged downstream from the
other in the gas flow path.
Subclass:
191
Concentric tubular members:
This subclass is indented under subclass 190. Apparatus in
which the baffles, filters, or screens are in the form of
tubes of different diameters, all having a common axis.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 441 for a similar arrangement
of tubes of different diameters for reversing the flow of a
fluid mixture to separate a constituent therefrom.
Subclass:
192
Alternate central and peripheral gas paths:
This subclass is indented under subclass 190. Apparatus in
which the baffles, filters, or screens comprise two or more
members arranged to direct the gas flow through the center of
one member and around the outside of the next adjacent
downstream member to provide a gas flow path that is
alternately central and peripheral to the members placed in
series.
Subclass:
193
Pressure reducing means:
This subclass is indented under subclass 155. Apparatus
which decreases pressure acting on the liquid to cause or
facilitate degasification of the liquid.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 172, 247+, and 266 for gas
separation processes of various types involving a decrease in
pressure acting on a liquid.
Subclass:
194
And liquid flow modifier:
This subclass is indented under subclass 193. Apparatus
which is also provided with a means to change or alter the
liquid flow path within the apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
204 for liquid degasifying means with a flow slinger,
spreader, deflector, disperser, or rotation modifier.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 248 for liquid degasification
processes with flow modification and pressure varying.
Subclass:
195
Centrifugal type:
This subclass is indented under subclass 194. Apparatus
which (a) separates a fluid mixture by centrifugal force
causing the fluid mixture to spin or whirl as by tangential
flow about a central axis, forcing denser fluids away from
the axis and remaining fluids closer to the axis of rotation,
or (b) rotates or causes the fluid mixture to spin or whirl
as by tangential flow about a central axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
167 171, 177+, 208+, and 216+, for centrifugal type
separators of this class combined with other features.
SEE OR SEARCH CLASS:
55, Gas Separation, 447 for other gas separation apparatus
in which the fluid mixture is caused to spin or turn about an
axis to separate a constituent therefrom.
Subclass:
196
Rotating means:
This subclass is indented under subclass 195. Apparatus
which is provided with a helical screw, impeller, or other
means on a rotating shaft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
167 171, 177+, 208+, and 216+, for centrifugal type
degasifying means combined with other features.
SEE OR SEARCH CLASS:
55, Gas Separation, 447 for other gas separation apparatus
in which the fluid mixture is caused to spin or turn about an
axis to separate a constituent therefrom.
Subclass:
197
Baffle:
This subclass is indented under subclass 194. Apparatus in
which the means to alter the liquid flow path is a static
solid surface member (e.g., deflector, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
189 and 220, for other liquid degasification means with a
baffle type deflector.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for the structure of the static
solid surface member.
Subclass:
198
Plural baffles in series:
This subclass is indented under subclass 197. Apparatus
which comprises a plurality of such static solid surface
members arranged with each member downstream from the
previous member in the liquid flow path.
SEE OR SEARCH CLASS:
55, Gas Separation, 442 for plural deflectors serially
spaced in a gas stream to separate a constituent therefrom.
Subclass:
199
With heat exchange means:
This subclass is indented under subclass 198. Apparatus
which is provided with means to heat or cool a constituent of
the fluid mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
201 for means to degasify liquid with pressure reducing and
heat exchange means.
218 for means to degasify liquid by heat exchange.
Subclass:
200
Spray nozzle:
This subclass is indented under subclass 194. Apparatus
which has a nozzle to disperse the liquid under treatment
into smaller particles.
(1) Note. The liquid under treatment may either pass through
the nozzle or be broken up by a second fluid which is sprayed
from the nozzle onto a stream of the liquid under treatment.
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing for the nozzle
structure, per se.
Subclass:
201
With heat exchange means:
This subclass is indented under subclass 193. Apparatus
which is also provided with means to heat or cool a
constituent of the fluid mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
199 for means to degasify liquid having heat exchange means,
plural baffles in series, and means for reduction of
pressure.
218 for general apparatus to degasify liquid by heat
exchange means.
Subclass:
202
With gas contacting means:
This subclass is indented under subclass 155. Apparatus
which is also provided with means to pass a gas through or in
contact with the liquid.
(1) Note. The gas contacting means may or may not cause gas
to separate from the liquid.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 159 for processes of liquid
contacting and degasifying liquid by stripping with a gas,
and subclasses 245+ and 263+ for other processes of
degasifying liquid with the use of a stripping gas.
261, Gas and Liquid Contact Apparatus, appropriate subclasses
for apparatus for degasifying liquid (e.g., deaerating feed
water heater, etc.) wherein the liquid is merely contacted
with a gas in a chamber or space for deaeration thereof. If
apparatus for degasifying liquid by contact with a gas has
other means to cause gas separation of the liquid with gas
entrained therein, of the separated gas, or of the separated
liquid, then the apparatus is classified in Class 96. See
section III of this class for an amplification of the line
between these two classes.
Subclass:
203
Spray nozzle:
This subclass is indented under subclass 202. Apparatus
which has a nozzle to disperse the liquid under treatment
into smaller particles.
Subclass:
204
Liquid flow slinger, spreader, deflector, disperser, or
rotation modifier:
This subclass is indented under subclass 155. Apparatus
which is a liquid flow modifier comprising (a) a moving
member used to throw the liquid in the form of drops or
spray, (b) a member which causes the liquid to flow in a
thin, laminar stream, (c) a solid member on which the liquid
impinges and is deflected, (d) a member which causes the
liquid to assume a spray or mistlike form, or (e) a member
which causes a spinning or whirling motion to be imparted to
or removed from the flowing liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
194 for liquid degasifying apparatus with a flow modifier
and pressure reducing means.
220 for other degasifying apparatus including a baffle.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for a deflecting or dispersing
member, per se, separating a constituent from a fluid
stream.
Subclass:
205
And preliminary heat exchange means:
This subclass is indented under subclass 204. Apparatus in
which a means to heat or cool a constituent of the fluid
mixture is positioned in the apparatus to precede the flow
slinger, spreader, deflector, disperser, or rotation
modifier.
SEE OR SEARCH THIS CLASS, SUBCLASS:
201 for heat exchange means combined with pressure reducing
means.
218 for means to degasify liquid by heat exchange.
Subclass:
206
At inlet to separator:
This subclass is indented under subclass 204. Apparatus in
which the liquid flow modifier is positioned within, at, or
around the discharge end of an inlet conduit to the
apparatus.
Subclass:
207
Plural, serially arranged:
This subclass is indented under subclass 206. Apparatus in
which two or more flow modifying means are arranged
downstream of one another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
190 for means to degasify liquid with plural, serially
arranged baffles, filters, or screens to remove mist
entrained in a gas.
198 for means to degasify liquid with plural baffles in
series and pressure reducing means.
SEE OR SEARCH CLASS:
55, Gas Separation, 442 for plural deflectors overlapped and
spaced serially in a gas flow.
Subclass:
208
Centrifugal type:
This subclass is indented under subclass 206. Apparatus
which (a) separates a fluid mixture by centrifugal force
causing the fluid mixture to spin or whirl as by tangential
flow about a central axis, forcing denser fluids away from
the axis and remaining fluids closer to the axis of rotation,
or (b) rotates or causes a fluid mixture to spin or whirl as
by tangential flow about a central axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
216 for a centrifugal type flow slinger, spreader,
deflector, disperser, or rotation modifier not located at an
inlet to the degasifying apparatus.
SEE OR SEARCH CLASS:
55, Gas Separation, 447 for means which cause a gaseous
stream to whirl or rotate to separate a constituent
therefrom.
Subclass:
209
Tangential inlet:
This subclass is indented under subclass 208. Apparatus in
which an inlet is arranged to direct inflow along a path
other than one which intersects or is parallel to the
longitudinal axis of the apparatus casing.
Subclass:
210
Including tangential outlet:
This subclass is indented under subclass 209. Apparatus in
which an outlet fluid flow conduit is also tangential to the
apparatus casing.
Subclass:
211
Split or plural inlets:
This subclass is indented under subclass 209. Apparatus in
which (a) the inlet is split or divided at its discharge end
or (b) more than one inlet is provided, at least one of which
is tangential to the apparatus casing.
Subclass:
212
Including inner and outer casings or plural compartments:
This subclass is indented under subclass 209. Apparatus
which is provided with (a) two or more casings, at least one
being completely enclosed within the other, or (b) two or
more separate compartments within a single casing.
Subclass:
213
Tangential outlet:
This subclass is indented under subclass 208. Apparatus in
which an outlet is arranged with an axis in a direction other
than one which intersects or is parallel to the longitudinal
axis of the casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
210 for apparatus with both tangential inlet and outlet.
Subclass:
214
Rotating means:
This subclass is indented under subclass 208. Apparatus
which is provided with a helical screw, impeller, or other
means on a rotating shaft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
167 171, 177+, 195+, and 216+, for centrifugal type
degasifying means combined with other features.
SEE OR SEARCH CLASS:
55, Gas Separation, 447 for other types of gas separation
apparatus in which a fluid mixture is caused to spin or turn
about an axis to separate a constituent therefrom.
Subclass:
215
Plural, serially arranged:
This subclass is indented under subclass 204. Apparatus in
which two or more liquid flow modifiers are arranged
downstream of one another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
190 and 198+, for other plural, serially arranged members on
which a fluid mixture impinges for separating a constituent
therefrom.
SEE OR SEARCH CLASS:
55, Gas Separation, 442 for plural deflecting surfaces
spaced serially in a gas stream to separate a constituent
therefrom.
Subclass:
216
Centrifugal type:
This subclass is indented under subclass 204. Apparatus
which (a) separates a fluid mixture by centrifugal force
causing the fluid mixture to spin or whirl as by tangential
flow about a central axis, forcing denser fluids away from
the axis and remaining fluids closer to the axis of rotation,
or (b) rotates or causes a fluid mixture to spin or whirl as
by tangential flow about a central axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
208 for a centrifugal type flow slinger, spreader,
deflector, disperser, or rotation modifier located at an
inlet to the degasifying apparatus.
SEE OR SEARCH CLASS:
55, Gas Separation, 447 for means which cause a gas to whirl
or rotate to separate a constituent therefrom.
Subclass:
217
Impeller or screw on rotating shaft:
This subclass is indented under subclass 216. Apparatus
which is provided with a helical screw or impeller on a
rotating shaft.
SEE OR SEARCH CLASS:
55, Gas Separation, 456 for fixed gas whirler or rotator
means in the form of a helical vane or baffle within a flow
conduit.
Subclass:
218
Heat exchanger to degasify:
This subclass is indented under subclass 155. Apparatus
which is provided with a heat exchanger to liberate gas from
the liquid under treatment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
185 199, 201, and 205, for means degasifying liquid with
nonseparatory heat exchange means.
Subclass:
219
And fluid filter:
This subclass is indented under subclass 155. Apparatus
which is provided with a fluid filter for either the liquid
under treatment or a gas separated therefrom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179 186, and 189+, for other means for degasifying liquid
also having a filter or screen member.
SEE OR SEARCH CLASS:
55, Gas Separation, appropriate subclasses for various gas
filters, per se, and the structures and materials associated
therewith.
210, Liquid Purification or Separation, appropriate
subclasses for various liquid filters, per se, and structures
and materials associated therewith.
Subclass:
220
Including baffle:
This subclass is indented under subclass 155. Apparatus
which is provided with a static solid surface member to
direct the flow of liquid under treatment or a gas separated
therefrom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
189 and 197+, for other means for degasifying a liquid
combined with a baffle.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for gas separation apparatus with
various types of deflectors.
Subclass:
221
COLD WALL - HOT WALL THERMAL DIFFUSION-TYPE SEPARATOR:
This subclass is indented under the class definition.
Apparatus having surfaces of different temperatures between
which a gaseous fluid mixture passes, with the different
temperatures of the surfaces causing separation of
constituents of the gaseous fluid mixture by migration of the
constituents to one surface or another.
(1) Note. This subclass takes this special type of gas
separating apparatus, regardless of any claimed refrigeration
apparatus.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 289 for
corresponding processes. Patents are not cross-referenced
from Class 95, subclass 289 to this subclass based only on
disclosure. Therefore, relevant disclosures for gas
separation apparatus may be found in the process area.
210, Liquid Purification or Separation, subclass 176 and 775
for similar apparatus and methods to separate components of a
liquid mixture.
Subclass:
222
WITH MEANS TO ADD FRAGRANCE OR SCENT:
This subclass is indented under the class definition.
Apparatus having means to add a chemical having a pleasant
odor to a gaseous fluid mixture or separated constituent.
(1) Note. The added chemical may be a deodorant used to
mask an unpleasant odor in the gaseous fluid mixture or
separated constituent.
Subclass:
223
WITH STERILIZING MEANS:
This subclass is indented under the class definition.
Apparatus having means acting to render apparatus parts or a
gaseous fluid mixture or its constituent parts passing
through or being delivered from the apparatus in a condition
free from bacteria or other microorganisms.
SEE OR SEARCH THIS CLASS, SUBCLASS:
16 for electric field separation apparatus including an
ultraviolet light ionizer.
SEE OR SEARCH CLASS:
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, appropriate
subclasses for sterilizing devices. See the SEARCH CLASS
notes in the Class Definition of Class 96 for the line
between these two classes.
Subclass:
224
Germicidal lamp (e.g., ultraviolet light, etc.):
This subclass is indented under subclass 223. Apparatus in
which the sterilizing means is a light whose radiation kills
bacteria or other microorganisms.
Subclass:
225
Heater (e.g., electrical, steam, etc.):
This subclass is indented under subclass 223. Apparatus in
which the sterilizing means causes an increase in the
temperature of the apparatus parts or the gaseous fluid
mixture or its constituent parts in order to kill bacteria or
other microorganisms.
Subclass:
226
Means uses chemical antimicrobial agent:
This subclass is indented under subclass 223. Apparatus in
which the sterilizing means uses a chemical substance that
kills bacteria or other microorganisms on the apparatus parts
or in the gaseous fluid mixture or its constituent parts.
Subclass:
227
Liquid agent:
This subclass is indented under subclass 226. Apparatus in
which the antimicrobial agent is a liquid.
Subclass:
228
WITH MEANS USING LIQUID TO CLEAN SEPARATING APPARATUS:
This subclass is indented under the class definition.
Apparatus in which means are provided to apply a liquid
(e.g., by sprinkling, projecting, washing down, submerging in
a bath, etc.) to a separating apparatus in order to remove a
separated constituent from the separating apparatus.
(1) Note. Cleaning the separating apparatus by contact with
steam is not considered to be the use of liquid to clean the
separating apparatus.
SEE OR SEARCH CLASS:
55, Gas Separation, 282 for nonliquid cleaning means for
separating media (e.g., means using steam, etc.); subclass
431 for contacting an apparatus part with a fluid for
manipulating or transporting a collected mass of nongaseous
residue; subclass 466 for treating the residue by a liquid.
95, Gas Separation: Processes, subclass 276 and 281 for
processes of gas separation with cleaning of a filter by use
of a liquid.
Subclass:
229
Movably mounted cleaning liquid distributor:
This subclass is indented under subclass 228. Apparatus
having a continuously or intermittently moving discharging or
applying means to apply the cleaning liquid along a surface
of the separating apparatus.
Subclass:
230
Movable separating media:
This subclass is indented under subclass 228. Apparatus in
which the separating apparatus includes a separating media
that has means to change its position.
Subclass:
231
Immersion cleaning:
This subclass is indented under subclass 230. Apparatus in
which the movable separating media has a means for dipping or
submerging the separating media in a liquid bath.
Subclass:
232
Parallel vanes or baffles:
This subclass is indented under subclass 228. Apparatus in
which the separating apparatus includes a separating media
that is formed either of at least two slanted plates that are
an equal distance apart at every point between which a
gaseous fluid mixture flows (e.g., louver, etc.) that are
constructed to provide substantially constant area for flow
of the gaseous fluid mixture or of at least two plates that
are an equal distance apart at every point between which a
gaseous fluid mixture flows in a tortuous or sinuous path,
the plates being bent, deformed, or provided with
projections, and arranged relatively one to the other so that
a bend, deformation, or projection of one plate is spaced
from the corresponding bend, deformation, or projection of
the other, so as to provide substantially constant area for
the flow of the gaseous fluid mixture.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 440 for parallel vane
separation apparatus not having liquid cleaning means.
Subclass:
233
Filter:
This subclass is indented under subclass 228. Apparatus in
which the separating apparatus includes a separating media
that is a foraminous or porous mass which separates solid or
liquid particles from the gaseous fluid mixture by entrapment
and retention while permitting gaseous or vaporous
constituents to pass through.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 276 and 281 for
processes of gas separation using a filter with cleaning of
the filter by use of a liquid.
Subclass:
234
GAS AND LIQUID CONTACT APPARATUS FOR GAS SEPARATION INCLUDING
MEANS TO REGENERATE, PURIFY, OR SEPARATE CONTACT LIQUID:
This subclass is indented under the class definition.
Apparatus having means in which a gaseous fluid mixture is
contacted with a liquid in order to remove a constituent from
the gaseous fluid mixture and includes means to restore the
contact liquid to its original condition, to cleanse the
contact liquid in order to rid the contact liquid of the
constituent that was removed from the gaseous fluid mixture,
or to remove from the contact liquid the constituent that was
removed from the gaseous fluid mixture.
(1) Note. After the contact liquid is regenerated,
purified, or separated, the contact liquid may be reused for
further gas and liquid contact or the contact liquid may be
discarded. The constituent removed from the gaseous fluid
mixture, after its removal from the contact liquid, may be
used or discarded.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, for liquid
purification or separation, per se.
261, Gas and Liquid Contact Apparatus, for gas and liquid
contact apparatus, per se. See the SEARCH CLASS notes in the
Class Definition of Class 96 for the line between these two
classes.
Subclass:
235
Means to add conditioning agent to contact liquid:
This subclass is indented under subclass 234. Apparatus in
which the means to regenerate, purify, or separate the
contact liquid consists of a means for adding an agent to the
contact liquid that causes or aids the contact liquid to be
modified (e.g., cleaned, etc.).
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 198.1 for the
addition of a treating medium to a liquid separation or
purification apparatus.
Subclass:
236
Gravitational separator for contact liquid:
This subclass is indented under subclass 234. Apparatus in
which the means to regenerate, purify, or separate the
contact liquid consists of means in which the contact liquid
and the constituent removed from the gaseous fluid mixture
are separated from one another by forming component layers in
accordance with their respective specific gravities.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 513 for apparatus
for gravitational separation of a liquid, per se.
Subclass:
237
With heavier component mechanical mover, trap, chamber, or
recess in gravitational separator:
This subclass is indented under subclass 236. Apparatus in
which the gravitational separator includes a means to provide
a change in position, produced by a part of the apparatus, of
the component having the higher density or a receptacle,
compartment, or small hollow for collecting the component
having the higher density.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 523 for a mechanical
constituent mover in a gravitational liquid separation
apparatus and subclasses 532.1+ for a heavier component trap,
chamber, or recess in a gravitational liquid separation
apparatus.
Subclass:
238
With lighter component removal means in gravitational
separator:
This subclass is indented under subclass 236. Apparatus in
which the gravitational separator includes a discharge
opening or a separate physical element for removing the
component having the lower density.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 538 for a lighter
component trap in a gravitational liquid separation
apparatus.
Subclass:
239
With baffle, plate, or weir within gravitational separator to
aid contact liquid regeneration, purification, or
separation:
This subclass is indented under subclass 236. Apparatus in
which the gravitational separator includes a surface in the
contact liquid flow path to be contacted by the contact
liquid for redirecting or altering the contact liquid flow
path within the gravitational separator to facilitate
gravitational separation or to facilitate other contact
liquid regeneration or purification.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 521 for superposed
baffles in a gravitational liquid separation apparatus.
Subclass:
240
Filter for contact liquid:
This subclass is indented under subclass 234. Apparatus in
which the means to regenerate, purify, or separate the
contact liquid is a foraminous or porous mass which separates
the constituent from the contact liquid by entrapment and
retention while permitting the contact liquid to pass
through.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 348 for a filter in
a liquid separation apparatus.
Subclass:
241
Including filter adjusting or removal means:
This subclass is indented under subclass 240. Apparatus
including means to change the position or porosity of the
filter or to remove the filter (e.g., for cleaning,
substitution, or disposal).
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 470 for a filter
with a handle in a liquid purification or separation
apparatus.
Subclass:
242
Heating or cooling means:
This subclass is indented under subclass 234. Apparatus in
which the means for regeneration, purification, or separation
of the contact liquid includes means for raising or lowering
the temperature of the contact liquid.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 175 for a heater or
heat exchanger in a liquid purification or separation
apparatus.
Subclass:
243
WITH GAS AND LIQUID CONTACT APPARATUS:
This subclass is indented under the class definition.
Apparatus having means to cause separation of a gaseous fluid
mixture combined with means to bring the gaseous fluid
mixture or a separated gaseous constituent into (1) intimate
confluent, countercurrent, or generally mingling relationship
with a contact liquid or (2) into contact with the surface of
a reservoir or supply tank of a contact liquid.
(1) Note. The means for contacting the gaseous fluid
mixture with a liquid generally results in separation of a
gas, solid particles, or liquid particles from the gaseous
fluid mixture (e.g., sorption, scrubbing, etc.). However,
the means for contacting the gaseous fluid mixture with a
liquid does not have to cause separation of the gaseous fluid
mixture, but may be used for other reasons (e.g., to humidify
a gas, etc.). In order for a patent to be placed in this
subclass, there must be means to cause separation of the
gaseous fluid mixture by some apparatus of this class
combined with the means to cause gas and liquid contact
(e.g., a liquid bath combined with a filter or deflector for
mist elimination, a filter combined with a liquid sprayer for
humidification, etc.). Gas and liquid contact apparatus, per
se, for gas separation or for other reasons is classified
elsewhere (see the SEARCH CLASS note below).
(2) Note. In order to qualify under portion (1) of this
definition, the gas and liquid contact apparatus must be of
the type described as classified, per se, elsewhere (see the
SEARCH CLASS note below).
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 149 for processes of gas
separation involving liquid contact.
261, Gas and Liquid Contact Apparatus, appropriate subclasses
for gas and liquid contact apparatus wherein means for gas
and liquid contact is the only physical gas separation means
involved. See the SEARCH CLASS notes in the Class Definition
of Class 96 for the line between these two classes. (Also see
the (1) Note and (2) Note above.)
Subclass:
244
With control means responsive to sensed condition:
This subclass is indented under subclass 243. Apparatus in
which means are provided to detect an apparatus or a process
characteristic or a change therein and to control or regulate
operation of the apparatus or process based upon the detected
characteristic or change therein.
(1) Note. In this subclass and the subclasses indented
hereunder, a single means may be used both to detect the
characteristic or a change therein and to implement an action
in the apparatus based upon the detected characteristic or
change therein. There must be a positive action made by the
apparatus because of the detected characteristic or change
therein. An example is a liquid height sensor which opens or
closes a valve when a certain level is reached. Another
example is a pressure valve in which a certain pressure must
be reached before the valve opens to relieve the pressure
differential across the valve. Apparatus in which no
positive action is made by the single means as a result of
the detected characteristic or change therein is not
classified in this subclass or in the subclasses indented
hereunder, but is classified below. An example of such means
would be an overflow means which maintains the height of
liquid within a vessel, but without means for implementing
any action in the vessel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for electric field separation apparatus with control
means responsive to sensed condition.
102 for chromatos:graphic type apparatus with control means
responsive to sensed condition.
109 for solid sorbent apparatus with control means
responsive to sensed condition.
156 for apparatus degasifying liquid with control means
responsive to sensed condition.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 1 for gas separation
processes having control responsive to sensed condition.
Subclass:
245
Contact liquid level sensing means:
This subclass is indented under subclass 244. Apparatus
which is provided with means to detect height of the contact
liquid or a change therein and to control operation of the
apparatus or process based upon the detected height or change
therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
157 for degasifying apparatus with control means responsive
to liquid level.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 24 for processes in
which liquid level or a change therein is detected and used
to control some aspect of the process.
Subclass:
246
By pressure sensing means:
This subclass is indented under subclass 245. Apparatus
having means which senses pressure created by the height of
the contact liquid or senses a change in pressure created by
a change in the height of the contact liquid in order to
detect the height of the contact liquid or a change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for solid sorbent apparatus with control means
responsive to pressure.
174 for degasifying means for liquid with control means
responsive to pressure.
253 for gas separation apparatus combined with gas and
liquid contact apparatus having control means responsive to
pressure, wherein the contact liquid level is not sensed.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 19 for processes in which
pressure or a change therein is detected and is used to
control some aspect of the process.
Subclass:
247
Valve responsive to float level:
This subclass is indented under subclass 245. Apparatus
having a valve, controlled in response to position of a
liquid level float, through which the gaseous fluid mixture,
a separated constituent, or the contact liquid is released.
SEE OR SEARCH THIS CLASS, SUBCLASS:
158 for degasifying means for liquid with an inlet or outlet
valve responsive to float level.
Subclass:
248
Plural floats:
This subclass is indented under subclass 247. Apparatus
which has more than one float for sensing liquid level.
SEE OR SEARCH THIS CLASS, SUBCLASS:
159 for liquid degasifying means having plural floats.
Subclass:
249
Contact liquid inlet valve responsive to float level:
This subclass is indented under subclass 247. Apparatus in
which the float controls addition of the contact liquid
through a liquid inlet valve.
Subclass:
250
Contact liquid outlet valve responsive to float level:
This subclass is indented under subclass 247. Apparatus in
which the float controls discharge of the contact liquid
through a liquid outlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
168 for degasifying means for liquid with a liquid outlet
valve responsive to float level.
Subclass:
251
Temperature sensing means:
This subclass is indented under subclass 244. Apparatus
which is provided with means to detect temperature or a
change therein and to control operation of the apparatus or
process based upon the detected temperature or change
therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
112 for solid sorbent apparatus with temperature sensing
means.
173 for degasifying means for liquid with temperature
sensing means.
Subclass:
252
Gas flow rate sensing means:
This subclass is indented under subclass 244. Apparatus
which is provided with means to detect flow rate of the
gaseous fluid mixture or the separated gaseous constituent or
a change therein and to control operation of the apparatus or
process based upon the detected flow rate of the gaseous
fluid mixture or the separated gaseous constituent or change
therein.
(1) Note. The gas flow rate may be used to actuate or start
the addition of the contact liquid or to control the amount
of contact liquid added to the flowing gas stream.
Subclass:
253
Pressure sensing means:
This subclass is indented under subclass 244. Apparatus
which is provided with means to detect pressure or a change
therein and to control operation of the apparatus or process
based upon the detected pressure or change therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for solid sorbent apparatus with control means
responsive to pressure.
174 for degasifying means for liquid with control means
responsive to pressure.
246 for gas separation apparatus combined with gas and
liquid contact apparatus having contact liquid level sensing
by pressure sensing means.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, 19 for gas separation
processes in which pressure or a change therein is detected
and is used to control some aspect of the process.
Subclass:
254
Pressure sensitive diaphragm:
This subclass is indented under subclass 253. Apparatus in
which the pressure sensing means is a reciprocating member in
the form of a flat or cup-shaped member of relatively thin
deformable material secured at its periphery to its housing.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 331 for specific
structure of the reciprocating diaphragm valve, per se.
Subclass:
255
With programmed, cyclic, or time responsive control means:
This subclass is indented under subclass 243. Apparatus
which is provided with control means for (a) storing coded
instructions or other data necessary to regulate operation of
the apparatus, (b) repetitively regulating a sequence of
operational steps performed in or by the apparatus, or (c)
causing various operations to occur according to preset
timing sequences or to last for predetermined durations
(e.g., timer switches, etc.).
(1) Note. The control means is not directly responsive to a
sensed condition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
25 for electric field separation apparatus with programmed,
cyclic, or time responsive control means.
103 for gas chromatography type apparatus with programmed,
cyclic, or time responsive control means.
114 and 115+, for solid sorbent apparatus with programmed,
cyclic, or time responsive means.
Subclass:
256
Contact liquid movement by flowing gas force:
This subclass is indented under subclass 243. Apparatus
having means in which the movement of contact liquid to,
from, or within the apparatus is effected by the velocity or
pressure of flow of the gaseous fluid mixture or the
separated gaseous constituent (e.g., a venturi through which
the gaseous fluid mixture passes and which educes the contact
liquid, etc.).
Subclass:
257
Including means varying gas flow to control saturation or
dispersion:
This subclass is indented under subclass 243. Apparatus
which is provided with direct response or other nonautomatic
control means for the gaseous fluid mixture or the separated
gaseous constituent to alter or determine the amount of
contact liquid carried or retained by the gaseous fluid
mixture or the separated gaseous constituent by changing flow
rate of the gaseous fluid mixture or the separated gaseous
constituent through or from the apparatus.
Subclass:
258
Pivotal means:
This subclass is indented under subclass 257. Apparatus in
which the varying means is an apparatus part having a rod or
shaft about which the part rotates or swings in order to vary
size of a space between the apparatus part having the rod or
shaft and other parts of the apparatus to change flow rate of
the gaseous fluid mixture or the separated gaseous
constituent through the apparatus.
Subclass:
259
About an end:
This subclass is indented under subclass 258. Apparatus in
which the rod or shaft about which the part rotates or swings
is at an outside edge of the part.
Subclass:
260
Axially moveable means:
This subclass is indented under subclass 257. Apparatus in
which the varying means moves in a direction parallel to the
flow of the gaseous fluid mixture or the separated gaseous
constituent to various positions in order to vary the size of
a space between apparatus parts to change flow rate of the
gaseous fluid mixture or the separated gaseous constituent
through the apparatus.
Subclass:
261
Conically or frustoconically shaped:
This subclass is indented under subclass 260. Apparatus in
which the axially moveable means is shaped like a cone (i.e.,
a means having a surface that has circular cross sections of
increasing diameter) or a part of a cone formed by two
parallel planes cutting a cone (e.g., the section between the
base and a plane parallel to the base, etc.).
Subclass:
262
Having contact liquid level maintaining means (e.g., weir,
wall openings, tubes, gates, etc.):
This subclass is indented under subclass 243. Apparatus
which is provided with nonautomatic means to maintain the
level of the contact liquid at a specified height, without
being directly responsive to a sensed condition (e.g., weir,
wall openings, tubes, gates, etc.).
Subclass:
263
For portion of total gas flow:
This subclass is indented under subclass 243. Apparatus
which is provided with means for dividing the gaseous fluid
mixture or the separated gaseous constituent into two or more
flowing streams, so that less than all of the divided streams
are brought into direct contact with the contact liquid in at
least one phase of the separating operation.
Subclass:
264
Utilizing a valve:
This subclass is indented under subclass 263. Apparatus in
which the means for dividing the gaseous fluid mixture or the
separated gaseous constituent is a device which regulates the
flow of the gaseous fluid mixture by opening, closing, or
obstructing ports or passageways through which the gaseous
fluid mixture flows.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, appropriate subclasses for
the specific structure of valves, per se.
Subclass:
265
Including means to control contact liquid return flow to
supply or sump:
This subclass is indented under subclass 243. Apparatus
having (1) manual or power operated means (e.g., pump, etc.)
located at some point in a contact liquid recirculation
system for recirculating at least a portion of the contact
liquid back to the point of initial use, or (2) means to
drain, control the flow of, or send back the contact liquid
to a liquid bath or reservoir spaced apart from the contact
zone.
(1) Note. Mere mention of a recirculation line without
positive recitation of control by pumping or restriction in
the line is insufficient to cause a patent to be placed
here.
Subclass:
266
With heat exchange means:
This subclass is indented under subclass 265. Apparatus
including means to allow heat transfer between the gaseous
fluid mixture or the separated gaseous constituent and the
contact liquid or the gaseous fluid mixture or the separated
gaseous constituent and some other fluid.
Subclass:
267
Diverse means for adding liquid for gas and liquid contact:
This subclass is indented under subclass 243. Apparatus
having two or more unlike means which effect liquid contact
with the gaseous fluid mixture or the separated gaseous
constituent.
Subclass:
268
Moving apparatus part for liquid contact:
This subclass is indented under subclass 267. Apparatus in
which one of the liquid contacting means is an apparatus part
which moves to effect the contacting.
Subclass:
269
And liquid bath or reservoir for contact:
This subclass is indented under subclass 268. Apparatus in
which one of the liquid contacting means is a container or
receptacle holding a contact liquid having a liquid surface
providing contact with the gaseous fluid mixture or the
separated gaseous constituent either on top of or under the
contact liquid surface.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 119.1 for a liquid
tank providing either surface or subsurface liquid contact
with a gas stream.
Subclass:
270
And contact liquid sprayer:
This subclass is indented under subclass 268. Apparatus in
which one of the liquid contacting means provides contact
liquid in a moving mass of dispersed droplets.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 115 for liquid spray
contact with a gas stream.
Subclass:
271
Means forming free-falling contact liquid curtain:
This subclass is indented under subclass 267. Apparatus in
which one of the liquid contacting means creates a moving
liquid sheet that is extremely thin in relation to its length
and breadth and that is not in contact with any surface
during at least part of its travel in contact with the
gaseous fluid mixture or the separated gaseous constituent.
Subclass:
272
Means forming flowing contact liquid film on apparatus
surface:
This subclass is indented under subclass 267. Apparatus in
which one of the liquid contacting means creates a moving
liquid sheet that is extremely thin in relation to its length
and breadth and that is in contact with a surface or wall in
the apparatus during its travel in contact with the gaseous
fluid mixture or the separated gaseous constituent.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 112.1 for liquid film
contact with a gas stream.
Subclass:
273
And contact liquid sprayer:
This subclass is indented under subclass 272. Apparatus in
which one of the liquid contacting means provides contact
liquid in a moving mass of dispersed droplets.
Subclass:
274
Means to apply contact liquid to solid or porous sheet or
tube:
This subclass is indented under subclass 267. Apparatus in
which one of the liquid contacting means directs contact
liquid on or against a solid or porous sheet or tube (e.g.,
the means either aids in liquid distribution or increases the
gas and liquid contact surface area).
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 108 for stationary
baffles over which liquids flow in contact with gases.
Subclass:
275
Venturi passage:
This subclass is indented under subclass 274. Apparatus in
which the tube has an inlet channel having a converging inlet
portion terminating in a reduced throat portion and a
diverging outlet portion extending from the throat.
Subclass:
276
And liquid bath or reservoir for contact:
This subclass is indented under subclass 274. Apparatus in
which one of the liquid contacting means is a container or
receptacle holding a liquid having a liquid surface providing
contact with the gaseous fluid mixture or the separated
gaseous constituent either on top of or under the liquid
surface.
Subclass:
277
And contact liquid sprayer:
This subclass is indented under subclass 274. Apparatus in
which one of the liquid contacting means provides contact
liquid in a moving mass of dispersed droplets.
Subclass:
278
Liquid bath or reservoir for contact:
This subclass is indented under subclass 267. Apparatus in
which one of the liquid contacting means is a container or
receptacle holding a contact liquid having a liquid surface
providing contact with the gaseous fluid mixture or the
separated gaseous constituent either on top of or under the
contact liquid surface.
Subclass:
279
Submerged inlet for subsurface contact:
This subclass is indented under subclass 278. Apparatus
having an inlet for the gaseous fluid mixture or the
separated gaseous constituent which extends below the surface
of the liquid to effect subsurface contact of the gaseous
fluid mixture or the separated gaseous constituent and the
liquid.
Subclass:
280
And contact liquid sprayer:
This subclass is indented under subclass 278. Apparatus in
which one of the liquid contacting or applying means provides
contact liquid in a moving mass of dispersed droplets.
Subclass:
281
Movably mounted contact liquid distributor:
This subclass is indented under subclass 243. Apparatus
having a continuously or intermittently moving liquid
discharging means to cause the contact liquid to be put into
the gaseous fluid mixture or the separated gaseous
constituent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
332 for a movable agitator in a liquid bath or reservoir for
mixing a gas into the liquid bath or reservoir.
Subclass:
282
Rotatable solid disc or surface:
This subclass is indented under subclass 281. Apparatus in
which the movably mounted liquid distributor is an
imperforate, thin, flat plate or outer layer of a
three-dimensional object that spins about an axis.
Subclass:
283
Partially immersed within contact liquid:
This subclass is indented under subclass 282. Apparatus in
which the rotatable solid disc or surface is submerged, but
not completely, in the contact liquid.
Subclass:
284
Rotation causes contact liquid to be drawn from liquid
reservoir (e.g., suction, etc.):
This subclass is indented under subclass 282. Apparatus
which has means by which movement of the movably mounted
liquid distributor causes the contact liquid to be removed
(e.g., pulled, sucked, etc.) from a liquid supply and
contacted with the gaseous fluid mixture or the separated
gaseous constituent.
Subclass:
285
Rotation caused by flowing contact liquid or gas:
This subclass is indented under subclass 282. Apparatus
which has means for causing flowing contact liquid or flowing
gaseous fluid mixture or flowing separated gaseous
constituent to rotate the movably mounted liquid
distributor.
Subclass:
286
Rotatable porous disc or surface:
This subclass is indented under subclass 281. Apparatus in
which the movably mounted liquid distributor is a perforate,
thin, flat plate or outer surface layer of a
three-dimensional object that spins about an axis.
Subclass:
287
Partially immersed within contact liquid:
This subclass is indented under subclass 286. Apparatus in
which the rotatable porous disc or surface is submerged, but
not completely, in the contact liquid.
Subclass:
288
Belt type:
This subclass is indented under subclass 287. Apparatus in
which the rotatable porous surface is a continuous band or
endless surface.
Subclass:
289
Drum type:
This subclass is indented under subclass 287. Apparatus in
which the rotatable porous surface has a cylindrical shape.
Subclass:
290
Particulate media, shaped packing elements (e.g., Raschig
rings, Berl saddles, etc.), or porous media for gas and
liquid contact:
This subclass is indented under subclass 243. Apparatus
having means to apply the contact liquid to a contact means
comprised of (a) a plurality of small, discrete solids
permitting flow of the gaseous fluid mixture or the separated
gaseous constituent through interstices formed between the
solids (e.g., particulate bed, etc.), (b) a mass of randomly
oriented or positioned elements which may be molded,
machined, or formed, that possess specific advantages of
surface availability for contacting the contact liquid and
the gaseous fluid mixture or the separated gaseous
constituent (e.g., Raschig rings, Berl saddles, Intalox
saddles, Pall rings, etc.), or (c) a mass having pores
therein providing interstices and thereby surface extending
paths therein for liquid contact with the gaseous fluid
mixture or the separated gaseous constituent passing
therethrough.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for means for forming flowing liquid film on apparatus
surface or free-falling liquid curtain for gas and liquid
contact.
SEE OR SEARCH CLASS:
95, Gas Separation: Apparatus, 210 for processes involving
gas and liquid contact on a surface extending mass.
261, Gas and Liquid Contact Apparatus, 94 and Digest 72 for
similar media or elements wherein gas and liquid are mixed,
and wherein a constituent may be separated from the gas.
Subclass:
291
Moving:
This subclass is indented under subclass 290. Apparatus
having means to put the contact means in motion during use or
wherein the contact means is moved about by a fluid.
Subclass:
292
In engine air inlet:
This subclass is indented under subclass 290. Apparatus
wherein the contact means is located in the air supply line
for an engine.
Subclass:
293
In fuel dispersal means (e.g., in carburetor, etc.):
This subclass is indented under subclass 290. Apparatus
wherein the contact means is located in or consists of means
to mix fuel into an air stream.
Subclass:
294
Humidifier or evaporative cooler:
This subclass is indented under subclass 290. Apparatus
wherein the contact means distributes water into the gaseous
fluid mixture or the separated gaseous constituent to
increase the amount of water or water vapor in the gaseous
fluid mixture or the separated gaseous constituent or to
lower the temperature of the gaseous fluid mixture or the
separated gaseous constituent.
Subclass:
295
Gas dehydrator (e.g., glycol type, etc.):
This subclass is indented under subclass 290. Apparatus
wherein the contact means causes gas and liquid contact
whereby the contact liquid absorbs water from the gaseous
fluid mixture or the separated gaseous constituent.
Subclass:
296
Mesh or fabric screen, fibrous or filamentary pad, or
perforated plate:
This subclass is indented under subclass 290. Apparatus
wherein the contact means consists of a filter with an open
network of interlacing threads or wires; a porous mass made
of slender, elongated material or of fine or thinly spun
threads or wires; or a flat, thin, inflexible body of uniform
thickness having holes therethrough.
Subclass:
297
By sprayer:
This subclass is indented under subclass 296. Apparatus
wherein a moving mass of dispersed droplets is applied to the
contact means.
Subclass:
298
Foam:
This subclass is indented under subclass 290. Apparatus
wherein the contact means has a rigid or semi-rigid cellular
structure (e.g., sponge rubber, etc.).
Subclass:
299
Parallel plate, sheet, or member:
This subclass is indented under subclass 290. Apparatus
wherein the contact means comprises elements spaced an equal
distance apart.
Subclass:
300
Downstream gas separation means (e.g., mist eliminator,
etc.):
This subclass is indented under subclass 290. Apparatus in
which a gas separation means is located after the gas and
liquid contact apparatus.
Subclass:
301
Fixed gas whirler or rotator for gas separation:
This subclass is indented under subclass 243. Apparatus
comprising a chamber or static flow guide for causing the
gaseous fluid mixture to spin about an axis in order to cause
gas separation.
SEE OR SEARCH CLASS:
55, Gas Separation, 447 for fixed gas whirler or rotator
means, per se, for gas separation without liquid contact
means.
261, Gas and Liquid Contact Apparatus, 79.1 for means
producing a whirling gas flow in an apparatus for contacting
gas and liquid.
Subclass:
302
Having conical baffle with apex facing upstream:
This subclass is indented under subclass 301. Apparatus in
which the static flow guide has circular cross sections of
increasing diameter with the smallest diameter section facing
upstream.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 463 for a conical baffle with
an apex facing upstream in a gas separation apparatus without
liquid contact means.
Subclass:
303
Contact liquid applied in central gaseous flow path of
concentric gaseous flow paths:
This subclass is indented under subclass 301. Apparatus
having means defining gaseous flow paths arranged so that a
path flows about or surrounds an innermost axial path and
having means to distribute contact liquid in the innermost
flow path.
Subclass:
304
Baffle, vane, or plate in outer gaseous flow path:
This subclass is indented under subclass 303. Apparatus
having a surface positioned in a surrounding gaseous flow
path to redirect the direction of or to alter the velocity of
the flow path.
Subclass:
305
Baffle, vane, or plate in central gaseous flow path:
This subclass is indented under subclass 303. Apparatus
having a surface positioned in the innermost axial gaseous
flow path to redirect the direction of or to alter the
velocity of the flow path.
Subclass:
306
Liquid contact preceding whirler or rotator:
This subclass is indented under subclass 301. Apparatus
having liquid distributing means arranged to supply contact
liquid upstream of the whirler or rotator.
Subclass:
307
Means forming free-falling contact liquid curtain:
This subclass is indented under subclass 306. Apparatus in
which the liquid distributing means creates a moving liquid
sheet that is extremely thin in relation to its length and
breadth and that is not in contact with any surface during at
least part of its travel in contact with the gaseous fluid
mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for gas separation apparatus having means forming a
free-falling liquid curtain other than a fixed gas whirler or
rotator combined with means forming a free-falling liquid
curtain for gas and liquid contact.
Subclass:
308
Means forming flowing contact liquid film on apparatus
surface:
This subclass is indented under subclass 306. Apparatus in
which the liquid distributing means creates a moving liquid
sheet that is extremely thin in relation to its length and
breadth and that is in contact with a surface or wall in the
apparatus during its travel in contact with the gaseous fluid
mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for gas separation apparatus having means forming a
flowing liquid film on an apparatus surface for gas and
liquid contact not including a fixed gas whirler or rotator
for gas separation.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 112.1 for liquid film
contact with a gas stream.
Subclass:
309
Liquid bath or reservoir for contact:
This subclass is indented under subclass 306. Apparatus in
which the liquid distributing means is a container or
receptacle holding a contact liquid having a liquid surface
providing contact with the gaseous fluid mixture either on
top of or under the contact liquid surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329 for gas separation apparatus having a liquid bath or
reservoir for gas and liquid contact not including a fixed
gas whirler or rotator for gas separation.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 119.1 for gas contact
with a liquid bath or reservoir.
Subclass:
310
And downstream filter:
This subclass is indented under subclass 309. Apparatus
having a foraminous or porous mass which separates solid or
liquid particles from the gaseous fluid mixture or the
separated gaseous constituent by entrapment and retention
while permitting gaseous or vaporous constituents to pass
through located after the liquid bath or reservoir.
Subclass:
311
Contact liquid spray:
This subclass is indented under subclass 306. Apparatus in
which the liquid distributing means provides contact liquid
in a moving mass of dispersed droplets.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 115 for liquid spray
contact with a gas stream.
Subclass:
312
Within a venturi passage:
This subclass is indented under subclass 311. Apparatus in
which the contact liquid spray is provided in an area having
an inlet channel having a converging inlet portion
terminating in a reduced throat portion and a diverging
outlet portion extending from the throat by means of which
liquid and gas are drawn through the area.
Subclass:
313
Tangential gas inlet into whirler or rotator:
This subclass is indented under subclass 311. Apparatus
having an inflow gas conductor which directs the gaseous
fluid mixture or the separated gaseous constituent into the
chamber containing the whirler or rotator in a path other
than one which intersects or is parallel to the longitudinal
axis of the chamber.
Subclass:
314
Liquid contact within whirler or rotator:
This subclass is indented under subclass 301. Apparatus
having liquid distributing means arranged to supply contact
liquid within the whirler or rotator.
Subclass:
315
Means forming free-falling contact liquid curtain:
This subclass is indented under subclass 314. Apparatus in
which the liquid distributing means creates a moving liquid
sheet that is extremely thin in relation to its length and
breadth and that is not in contact with any surface during at
least part of its travel in contact with the gaseous fluid
mixture or the separated gaseous constituent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for gas separation apparatus having means forming a
free-falling liquid curtain not including a fixed gas whirler
or rotator.
Subclass:
316
Means forming flowing contact liquid film on apparatus
surface:
This subclass is indented under subclass 314. Apparatus in
which the liquid distributing means creates a moving liquid
sheet that is extremely thin in relation to its length and
breadth and that is in contact with a surface or wall in the
apparatus during its travel in contact with the gaseous fluid
mixture or the separated gaseous constituent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for gas separation apparatus having means forming a
flowing liquid film on an apparatus surface not including a
fixed gas whirler or rotator for gas separation.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 112.1 for liquid film
contact with a gas stream.
Subclass:
317
Liquid bath or reservoir for contact:
This subclass is indented under subclass 314. Apparatus in
which the liquid distributing means is a container or
receptacle holding a contact liquid having a liquid surface
providing contact with the gaseous fluid mixture or the
separated gaseous constituent either on top of or under the
contact liquid surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329 for gas separation apparatus having a liquid bath or
reservoir not including a fixed gas whirler or rotator for
gas separation.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 119.1 for gas contact
with a liquid bath or reservoir.
Subclass:
318
And downstream filter:
This subclass is indented under subclass 317. Apparatus
having a foraminous or porous mass which separates solid or
liquid particles from the gaseous fluid mixture or the
separated gaseous constituent by entrapment and retention
while permitting gaseous or vaporous constituents to pass
through located after the liquid bath or reservoir.
Subclass:
319
Contact liquid spray:
This subclass is indented under subclass 314. Apparatus in
which the liquid distributing means provides contact liquid
in a moving mass of dispersed droplets.
Subclass:
320
Baffle means for producing or aiding contact liquid spray
formation:
This subclass is indented under subclass 319. Apparatus in
which a surface is provided in a contact liquid flow path to
be contacted by the contact liquid for redirecting or
altering the contact liquid flow path to create or further
assist liquid spray creation.
Subclass:
321
Having tangential gaseous fluid mixture inlet:
This subclass is indented under subclass 301. Apparatus in
which the gaseous fluid mixture enters the chamber containing
the whirler or rotator through an inflow gas conductor which
directs the gaseous fluid mixture into the chamber in a path
other than one which intersects or is parallel to the
longitudinal axis of the chamber.
Subclass:
322
Means forming flowing contact liquid film on apparatus
surface or free-falling contact liquid curtain for gas and
liquid contact:
This subclass is indented under subclass 243. Apparatus in
which the gas and liquid contact means creates a moving
liquid sheet that is extremely thin in relation to its length
and breadth and that is in contact with a surface or wall in
the apparatus during its travel in contact with the gaseous
fluid mixture or the separated gaseous constituent or the gas
and liquid contact means creates a moving liquid sheet that
is extremely thin in relation to its length and breadth and
that is not in contact with any surface during at least part
of its travel in contact with the gaseous fluid mixture or
the separated gaseous constituent.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 217 for processes
of gas separation wherein a liquid curtain is employed.
261, Gas and Liquid Contact Apparatus, 112.1 for apparatus
wherein liquids are directed over baffles in a thin layer or
film.
454, Ventilation, 54 for paint spray booths employing liquid
films or curtains for paint droplet removal.
Subclass:
323
Venturi type:
This subclass is indented under subclass 322. Apparatus
wherein the moving liquid sheet is located in an inlet
channel having a converging inlet portion terminating in a
reduced throat portion and a diverging outlet portion
extending from the throat.
Subclass:
324
Curved impingement surface:
This subclass is indented under subclass 322. Apparatus
having a rounded surface on which the moving liquid sheet
flows and against which the gaseous fluid mixture or the
separated gaseous constituent flows.
Subclass:
325
Impingement baffle or pan:
This subclass is indented under subclass 322. Apparatus
having a surface on which the liquid sheet flows and that
redirects or alters the flow of a fluid or having a shallow
reservoir in which the liquid sheet flows and against which
the gaseous fluid mixture or the separated gaseous
constituent flows.
Subclass:
326
Liquid flow surface perforated for gas flow therethrough:
This subclass is indented under subclass 322. Apparatus
which has a surface, on which the liquid sheet flows, that
has holes through which the gaseous fluid mixture or the
separated gaseous constituent passes.
Subclass:
327
Imperforate film supporting surface:
This subclass is indented under subclass 322. Apparatus
which has a solid surface that does not have any holes
therethrough on which the liquid sheet flows.
Subclass:
328
Inclined:
This subclass is indented under subclass 327. Apparatus
wherein the solid surface is mounted in a nonhorizontal,
nonvertical position.
Subclass:
329
Liquid bath or reservoir for contact:
This subclass is indented under subclass 243. Apparatus in
which the gas and liquid contact means is a container or
receptacle holding a contact liquid having a liquid surface
providing contact with the gaseous fluid mixture or the
separated gaseous constituent either on top of or under the
contact liquid surface.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 83 and 119.1+ for
liquid tanks for gas and liquid contact.
Subclass:
330
Having back pressure relief or liquid blowback trap or
separator:
This subclass is indented under subclass 329. Apparatus
having a gas escape means so arranged as to relieve excessive
outlet pressure or to prevent gas reverse flow in the
direction of the reservoir; or a supplemental liquid chamber
or a liquid separating, directing, or retaining means to
separate, accept, or channel liquid displaced from the
reservoir by reverse flow of the outgoing gas.
Subclass:
331
Having antisplash means or means for retaining contact liquid
during upset or tilt:
This subclass is indented under subclass 329. Apparatus
having means for maintaining the contact liquid at or near
the surface of the bath in a relatively quiescent state or
having means which prevent the contact liquid of the bath
from escaping during other than normal attitudes of the
apparatus.
Subclass:
332
With movable agitator in bath or reservoir for commingling
gas and liquid:
This subclass is indented under subclass 329. Apparatus
having means retained or mounted for movement in the bath or
reservoir, the movement of which increases the contact
relationship of the gaseous fluid mixture or the separated
gaseous constituent with the liquid in the bath or
reservoir.
SEE OR SEARCH THIS CLASS, SUBCLASS:
281 for a movably mounted liquid distributor that discharges
or applies the contact liquid into the gaseous fluid mixture
or the separated gaseous constituent.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 83 for rotating gas
and liquid contact apparatus.
Subclass:
333
Nonliquid gas separator positioned above liquid bath or
reservoir:
This subclass is indented under subclass 329. Apparatus
having a gas separator of nonliquid form arranged over the
bath or reservoir in a normal use attitude.
SEE OR SEARCH THIS CLASS, SUBCLASS:
265 for apparatus to control the flow of separated liquid to
the liquid supply or sump.
Subclass:
334
Having means for forming contact liquid into spray or heap:
This subclass is indented under subclass 333. Apparatus
having gas conducting means arranged to cause distortion of
the surface of the bath or reservoir into a moving mass of
dispersed droplets or a lifting up of the surface of the bath
or reservoir.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 91 for apparatus
wherein a rotating agitator penetrates the liquid surface.
Subclass:
335
Central downward gas inlet:
This subclass is indented under subclass 334. Apparatus
having a gas inlet in a middle location in which the gaseous
fluid mixture or the separated gaseous constituent flows from
a higher to a lower level.
Subclass:
336
Gas flows tangentially to liquid surface:
This subclass is indented under subclass 334. Apparatus
wherein the gas conducting means causes the gaseous fluid
mixture or the separated gaseous constituent to flow
tangentially to the contact liquid surface to effect contact
with the liquid.
Subclass:
337
Superposed filter:
This subclass is indented under subclass 333. Apparatus
wherein the separator positioned above the liquid bath is a
foraminous or porous mass which separates solid or liquid
particles from the gaseous fluid mixture or the separated
gaseous constituent by entrapment and retention while
permitting gaseous or vaporous constituents to pass through.
Subclass:
338
Having flow guide preventing entire filter face contact by
gas flow:
This subclass is indented under subclass 337. Apparatus
having a gas flow directing or blocking means adjacent a
portion of the upstream face of the filter to thereby
restrict or limit the area of the filter face exposed to the
flow of the gaseous fluid mixture or the separated gaseous
constituent.
(1) Note. The usual purpose of this feature is to provide a
liquid return path through the filter out of contact with the
gas passing therethrough.
Subclass:
339
Surrounding gas flow path:
This subclass is indented under subclass 337. Apparatus in
which the filter is of annular configuration and is coaxial
with a gas passage at its center.
Subclass:
340
Submerged inlet for subsurface contact:
This subclass is indented under subclass 339. Apparatus
having an inlet for the gaseous fluid mixture or the
separated gaseous constituent which extends below the surface
of the contact liquid to effect subsurface contact of the
gaseous fluid mixture or the separated gaseous constituent
and the contact liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
342 for similar apparatus wherein a filter does not surround
the gas flow path and subclasses 351+ for similar apparatus
which does not include a superposed filter.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 121.1 for apparatus
wherein a gas enters a liquid body at a submerged location.
Subclass:
341
And separable liquid sump:
This subclass is indented under subclass 340. Apparatus
comprising a removable liquid retaining receptacle situated
to receive gravity flow of the liquid from the filter.
Subclass:
342
Submerged inlet for subsurface contact:
This subclass is indented under subclass 337. Apparatus
having an inlet for the gaseous fluid mixture or the
separated gaseous constituent which extends below the surface
of the contact liquid to effect subsurface contact of the
gaseous fluid mixture or the separated gaseous constituent
and the contact liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
340 for similar apparatus having a superposed filter which
surrounds the gas flow path or subclasses 351+ for similar
apparatus without a separator positioned above the liquid
bath.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 121.1 for apparatus
wherein a gas enters a liquid body at a submerged location.
Subclass:
343
Multiple outlet orifices in submerged inlet:
This subclass is indented under subclass 342. Apparatus
wherein the inlet has a plurality of outlet holes through
which the gaseous fluid mixture or the separated gaseous
constituent enters below the contact liquid surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
352 for similar apparatus without a superposed filter.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 121.1 (see
particularly subclass 124) for apparatus wherein a gas enters
a liquid body at a submerged location through multiple
orifices.
Subclass:
344
Perforated pipe:
This subclass is indented under subclass 343. Apparatus
wherein the inlet is a submerged hollow cylinder having holes
through which the gaseous fluid mixture or the separated
gaseous constituent enters.
SEE OR SEARCH THIS CLASS, SUBCLASS:
353 for similar apparatus without a superposed filter.
Subclass:
345
Perforated plate:
This subclass is indented under subclass 343. Apparatus
wherein the inlet is a submerged flat, thin, inflexible body
of uniform thickness having holes through which the gaseous
fluid mixture or the separated gaseous constituent enters.
SEE OR SEARCH THIS CLASS, SUBCLASS:
354 for similar apparatus without a superposed filter.
Subclass:
346
Submerged baffle:
This subclass is indented under subclass 342. Apparatus
having a submerged surface against which the gaseous fluid
mixture or the separated gaseous constituent flows in order
to redirect or alter the gaseous fluid mixture or the
separated gaseous constituent flow path to effect mixing with
the contact liquid.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, subclass 123 for
similar apparatus wherein gas flows against a submerged
baffle.
Subclass:
347
Gas flows tangentially to liquid surface:
This subclass is indented under subclass 337. Apparatus
wherein a gas- conducting means causes the gaseous fluid
mixture or the separated gaseous constituent to flow
tangentially to the contact liquid surface to effect contact
with the liquid.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 119.1 for similar
apparatus wherein gas flows against a liquid surface to
effect contact with the liquid.
Subclass:
348
Superposed stationary deflector:
This subclass is indented under subclass 333. Apparatus
wherein the separator positioned above the liquid bath is a
nonmoving surface which effects a change in direction of flow
of the gaseous fluid mixture or the separated gaseous
constituent or guides the flow of the gaseous fluid mixture
or the separated gaseous constituent causing the heavier
constituents therein to drop out while the lighter
constituents flow on.
Subclass:
349
Flow reversal:
This subclass is indented under subclass 348. Apparatus
wherein the stationary deflector turns the direction of flow
of the gaseous fluid mixture or the separated gaseous
constituent in the opposite direction.
Subclass:
350
Tortuous path:
This subclass is indented under subclass 348. Apparatus
wherein the stationary deflector forms a path for the gaseous
fluid mixture or the separated gaseous constituent that is
repeatedly turned or bent.
Subclass:
351
Submerged inlet for subsurface contact:
This subclass is indented under subclass 329. Apparatus
having an inlet for the gaseous fluid mixture or the
separated gaseous constituent which extends below the surface
of the contact liquid to effect subsurface contact of the
gaseous fluid mixture or the separated gaseous constituent
and the contact liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
340 for similar apparatus having a superposed filter
surrounding the gas flow path and subclasses 342+ for similar
apparatus including a superposed filter of other than annular
configuration.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 121.1 for apparatus
wherein a gas enters a liquid body at a submerged location.
Subclass:
352
Multiple outlet orifices in submerged inlet:
This subclass is indented under subclass 351. Apparatus
wherein the inlet has a plurality of outlet holes through
which the gaseous fluid mixture or the separated gaseous
constituent enters below the contact liquid surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
343 for similar apparatus including a superposed filter.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 121.1 (see,
particularly subclass 124) for apparatus wherein gas enters a
liquid body at a submerged location through multiple
orifices.
Subclass:
353
Perforated pipe:
This subclass is indented under subclass 352. Apparatus
wherein the inlet is a submerged hollow cylinder having holes
through which the gaseous fluid mixture or the separated
gaseous constituent enters.
SEE OR SEARCH THIS CLASS, SUBCLASS:
344 for similar apparatus with a superposed filter.
Subclass:
354
Perforated plate:
This subclass is indented under subclass 352. Apparatus
wherein the inlet is a submerged flat, thin, inflexible body
of uniform thickness having holes through which the gaseous
fluid mixture or the separated gaseous constituent enters.
SEE OR SEARCH THIS CLASS, SUBCLASS:
345 for similar apparatus with a superposed filter.
Subclass:
355
Nonliquid gas separating means downstream of liquid contact
means:
This subclass is indented under subclass 243. Apparatus
having nonliquid means to separate the gaseous fluid mixture
or a separated gaseous constituent located beyond the liquid
contact means in the direction of gas flow.
Subclass:
356
Parallel vanes or baffles:
This subclass is indented under subclass 355. Apparatus in
which the nonliquid means is formed either of at least two
slanted plates that are an equal distance apart at every
point between which the gaseous fluid mixture or the
separated gaseous constituent flows (e.g., louver, etc.) that
are constructed to provide substantially constant area for
flow of the gaseous fluid mixture or the separated gaseous
constituent or of at least two plates that are an equal
distance apart at every point between which the gaseous fluid
mixture or the separated gaseous constituent flows in a
tortuous or sinuous path, the plates being bent, deformed, or
provided with projections, and arranged relatively one to the
other so that a bend, deformation, or projection of one plate
is spaced from the corresponding bend, deformation, or
projection of the other, so as to provide substantially
constant area for the flow of the gaseous fluid mixture or
the separated gaseous constituent.
Subclass:
357
And diverse separating means:
This subclass is indented under subclass 356. Apparatus
which includes other nonliquid means to separate the gaseous
fluid mixture or the separated gaseous constituent (e.g.,
filters, centrifugal separator, etc.).
Subclass:
358
Overlapping vanes or baffles:
This subclass is indented under subclass 355. Apparatus in
which the nonliquid means comprises a plurality of surfaces
which effect an abrupt change in direction of the gaseous
fluid mixture or the separated gaseous constituent flow or
guides the flow to cause the heavier constituents therein to
drop out and remain behind, while lighter constituents (e.g.,
clean gas, etc.) flow on, with at least a portion of each
surface being superposed with respect to the next adjacent
surface in the direction of gaseous fluid mixture or the
separated gaseous constituent flow.
Subclass:
359
Moving centrifugal separator:
This subclass is indented under subclass 355. Apparatus in
which the nonliquid means comprises a nonstatic member
designed to cause the gaseous fluid mixture or the separated
gaseous constituent to rotate or spin around an axis.
Subclass:
360
Impact vane, baffle, or wall:
This subclass is indented under subclass 355. Apparatus in
which the nonliquid means comprises a surface in the flow
path of the gaseous fluid mixture or the separated gaseous
constituent to be impinged upon by the gaseous fluid mixture
or the separated gaseous constituent for redirecting or
altering the flow path for separation of nongaseous
constituents therefrom.
Subclass:
361
Filter:
This subclass is indented under subclass 355. Apparatus in
which the nonliquid means comprises a foraminous or porous
mass in which a gas and solid or liquid particles entrained
therein are passed through the foraminous or porous mass
which separates the solid or liquid particles from the gas by
entrapment and retention while permitting the gaseous or
vaporous constituents to pass through.
Subclass:
362
Perforated plate:
This subclass is indented under subclass 361. Apparatus in
which the filter is a flat, thin, inflexible body of uniform
thickness having holes therethrough and is positioned
transverse to the flow path of the gaseous fluid mixture or
the separated gaseous constituent.
Subclass:
363
Mesh or fabric screen:
This subclass is indented under subclass 361. Apparatus in
which the filter is an open network of interlacing threads or
wires and is positioned transverse to the flow path of the
gaseous fluid mixture or the separated gaseous constituent.
Subclass:
364
Fibrous or filamentary pad:
This subclass is indented under subclass 361. Apparatus in
which the filter is a porous mass of slender, elongated
material of fine or thinly spun threads or wires.
Subclass:
365
And preliminary separating means:
This subclass is indented under subclass 355. Apparatus
which has a nonliquid gas separating means arranged before
the liquid contacting means.
Subclass:
366
Deflector upstream of liquid contact means:
This subclass is indented under subclass 243. Apparatus
having a surface located before the liquid contact means
which effects a change in direction of the gaseous fluid
mixture or guides the gaseous fluid mixture causing the
heavier constituents therein to drop out while the lighter
constituents flow on.
SEE OR SEARCH CLASS:
55, Gas Separation, 434 for a deflector, per se, in a gas
separation apparatus without liquid contact means.
Subclass:
367
Imperforate, impermeable baffle:
This subclass is indented under subclass 366. Apparatus in
which the deflector is a solid surface that does not have any
holes therethrough.
Subclass:
368
Conical:
This subclass is indented under subclass 367. Apparatus in
which the baffle has circular cross sections of increasing
diameter.
Subclass:
369
Ribbed or corrugated:
This subclass is indented under subclass 367. Apparatus in
which the baffle has raised ridges or parallel and
alternating ridges and grooves on or in its surface.
Subclass:
370
Angled or inclined:
This subclass is indented under subclass 367. Apparatus in
which the baffle is mounted in a nonhorizontal, nonvertical
position.
Subclass:
371
Filter upstream of liquid contact means:
This subclass is indented under subclass 243. Apparatus
having means before the liquid contact means in which a gas
and solid or liquid particles entrained therein are passed
through a foraminous or porous mass which separates the solid
or liquid particles from the gas by entrapment and retention
while permitting the gaseous or vaporous constituents to pass
through.
Subclass:
372
INCLUDING INLET MEANS FOR DIVERSE GAS OR SOLID FOR GAS
TREATMENT:
This subclass is indented under the class definition.
Apparatus providing inflow means for a nonliquid material
other than a gaseous fluid mixture that is to be separated,
the nonliquid material commingling or mixing with and
effecting a change of the gaseous fluid mixture, but not
including inflow of ambient air for purposes of pressure
relief or addition of air for mere flow induction of the
gaseous fluid mixture.
(1) Note. Steam used for the purpose of induction flow of
the gaseous fluid mixture is regarded as a nonliquid material
under this definition.
(2) Note. If a treated gaseous fluid mixture is discharged
into an enclosure (e.g., room, etc.) and then a portion
thereof enters the apparatus through a recirculation inlet to
be mixed with the gaseous fluid mixture entering through the
normal inlet, the portion is considered as a nonliquid
material other than gaseous fluid mixture under this
definition.
Subclass:
373
Solid or vaporized solid:
This subclass is indented under subclass 372. Apparatus in
which a solid or a gas derived from a normally solid source
is the nonliquid material introduced into the gaseous fluid
mixture.
(1) Note. A normal solid is one which at ordinary
temperatures and pressures is in the solid state. Solid
carbon dioxide and other solidified normally gaseous or
liquid materials do not qualify under this definition.
Subclass:
374
Steam is diverse gas:
This subclass is indented under subclass 372. Apparatus
using vaporized water as the nonliquid material.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, Digest 76 for
apparatus wherein steam is introduced into gas for various
purposes (e.g., to humidify air or to separate particles from
air or from combustion products, etc.).
Subclass:
375
Added into combustion products:
This subclass is indented under subclass 374. Apparatus
wherein the steam is introduced into a gaseous fluid mixture
that was produced by a process of burning.
Subclass:
376
To effect particle removal (e.g., dust removal, etc.):
This subclass is indented under subclass 374. Apparatus
wherein the steam is introduced to take away very small
solids from the gaseous fluid mixture.
Subclass:
377
And outlet for condensed vapors:
This subclass is indented under subclass 372. Apparatus
provided with a discharge port for liquids or solids formed
by temperature reduction resulting from the mixing of the
gaseous fluid mixture and the nonliquid material.
Subclass:
378
Downstream of separator:
This subclass is indented under subclass 372. Apparatus in
which the inflow means is positioned to add the nonliquid
material to a separated gaseous constituent after the gaseous
fluid mixture has been separated in at least one stage.
Subclass:
379
And gas regulation for each inflowing gas:
This subclass is indented under subclass 372. Apparatus in
which the nonliquid material is a gas and may enter through
an inflow line for the gaseous fluid mixture or through a
distinct inflow line, and in which (1) there is a single flow
controller located in the common inflow line to regulate the
proportion or mixture of the diverse gases or (2) controllers
individual to each inflow line are provided for the
regulation.
Subclass:
380
WITH SOUND DAMPING MEANS (I.E., NOISE ATTENUATION):
This subclass is indented under the class definition.
Apparatus having means other than mere flow channels or
conducting means for a gaseous fluid mixture for silencing
flow of the gaseous fluid mixture as by sound traps or
barriers, flow path configuration, or by selection of
materials for the apparatus or flow conducting means having
sound absorbing properties.
SEE OR SEARCH CLASS:
181, Acoustics, 175 for sound modifying devices.
Subclass:
381
Sound absorbing material:
This subclass is indented under subclass 380. Apparatus
having sound damping means or flow channel surfaces made with
material having noise attenuation properties in order to
reduce noise.
Subclass:
382
For vacuum cleaner:
This subclass is indented under subclass 381. Apparatus
having sound damping means for a cleaning device through
which the gaseous fluid mixture passes under reduced
pressure.
Subclass:
383
For internal combustion engine:
This subclass is indented under subclass 381. Apparatus
having sound damping means for an internal combustion engine
in which the gaseous fluid mixture is used for ignition of
fuel.
Subclass:
384
Sound attenuating gas flow path:
This subclass is indented under subclass 380. Apparatus
having means to change direction of the gaseous fluid mixture
in order to achieve silencing of the flow of the gaseous
fluid mixture.
Subclass:
385
Baffle in flow path:
This subclass is indented under subclass 384. Apparatus in
which a surface in the flow path of the gaseous fluid mixture
redirects or alters the flow path of the gaseous fluid
mixture in order to achieve noise suppression.
Subclass:
386
For internal combustion engine:
This subclass is indented under subclass 385. Apparatus
having sound damping means for an internal combustion engine
in which the gaseous fluid mixture is used for ignition of
fuel.
Subclass:
387
Perforated surface:
This subclass is indented under subclass 384. Apparatus
having means for passage of the gaseous fluid mixture through
holes in a wall along the gaseous fluid mixture flow path in
order to achieve silencing of the flow of the gaseous fluid
mixture.
Subclass:
388
Expansion chamber:
This subclass is indented under subclass 384. Apparatus in
which the gaseous fluid mixture flow path contains an
enlargement of cross-sectional flow area.
Subclass:
389
SONIC MEANS (I.E., USING SOUND WAVES):
This subclass is indented under the class definition.
Apparatus having means for producing compressional vibratory
wave energy in a gaseous fluid mixture to effect or enhance
separation, the waves being below, within, or beyond the
audible spectrum.
(1) Note. Pressure pulses in a gaseous fluid mixture
generated merely by intermittent discharge of a gas are not
considered to be compressional vibratory waves under this
definition. However, compressional vibratory waves under
this definition may be produced by intermittent discharge of
a gas, as in a siren.
SEE OR SEARCH THIS CLASS, SUBCLASS:
175 for degasifying means for liquid using sound waves.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 292 for devices utilizing sound
waves for cleaning separating media.
95, Gas Separation: Processes, 29 for processes of gas
separation in which sound waves are used.
Subclass:
390
SHELF OR EDGE TYPE:
This subclass is indented under the class definition.
Apparatus having (1) particle separating flow passages
resulting from closely spaced parallel (or almost parallel)
or concentrically arranged members along the faces of which a
gas and solid or liquid particles entrained therein is
constrained to pass without reliance upon change of direction
for separation but which provide either (a) a screen or
grid-like pattern at the inflow end of the arrangement or (b)
surfaces on which solid or liquid particles may settle or
drop; or (2) a surface with somewhat exaggerated nap-like or
pile-like covering along which a gas and solid or liquid
particles entrained therein moves such that in effect the
particles are swept out of the gas.
(1) Note. The shelf-like member must have sufficient space
above it for movement of the gas so that not all of the gas
is constrained to pass through the interstices formed by the
nap or pile.
(2) Note. None of the patents in these subclasses have flow
through the filter, but flow of the gas is along the surface
of the filter material or parallel elements.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 440 for parallel nonplanar
plates which cause gas to flow in a tortuous or sinuous path
for separation and subclass 477 for filter media of strand or
bristle type, having unsupported or free extremities, through
which gas passes.
Subclass:
391
Helical or spiral wound strip:
This subclass is indented under subclass 390. Apparatus in
which the member is a flat strip coiled about a central core
in such a manner as to generate turns about the axis of the
central core with each turn spaced along the axis from the
previous turn and so that the flat faces of the member are
perpendicular to the axis of the core.
Subclass:
392
Parallel plates or discs:
This subclass is indented under subclass 390. Apparatus in
which the members are at least two flat, thin, rigid bodies
of uniform thickness that are an equal distance apart at
every point.
Subclass:
393
Grooved or slotted:
This subclass is indented under subclass 392. Apparatus in
which surfaces of the parallel plates or discs have long,
narrow furrows or channels.
Subclass:
394
Having fibrous filter material or porous structure:
This subclass is indented under subclass 392. Apparatus in
which the parallel plates or discs have a porous mass made of
slender, elongated material or a mass having pores therein
providing interstices in order to trap the particles from the
gas flowing over the surface of the plates or discs.
Subclass:
395
Nap-like or pile-like material:
This subclass is indented under subclass 390. Apparatus in
which the surface is fuzzy or has cut or uncut loops of
twisted threads.
Subclass:
396
WITH DRIP OR ESCAPING MATERIAL, OTHER THAN SEPARATED
CONSTITUENT, COLLECTOR:
This subclass is indented under the class definition.
Apparatus having means to catch or otherwise dispose of
material separated from a gaseous fluid mixture that drips,
leaks, or otherwise is lost through parts of the apparatus
other than the discharge outlets specifically provided for
the constituents of the gaseous fluid mixture.
(1) Note. The drip could be a liquid escaping through a
seal or a viscous material running off or escaping to the
exterior of the apparatus, but not to a reservoir or sump
specifically provided for redistributing the liquid or
material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
234 for gas and liquid contact apparatus for gas separation
including means to regenerate, purify, or separate the
contact liquid.
243 for gas separation apparatus combined with gas and
liquid contact apparatus.
Subclass:
397
WITH CONTROL MEANS RESPONSIVE TO SENSED CONDITION FOR CONTROL
OF GAS FLOW OR NONGASEOUS CONSTITUENT DISCHARGE:
This subclass is indented under the class definition.
Apparatus having means to sense a condition which may or may
not occur, or a change in such condition or a lack of such a
condition or the result of such a condition, the sensing
means causing or permitting operation of a separate means for
controlling, without the intervention of a human attendant,
means to (1) regulate (e.g., divert, halt, or commence, etc.)
the flow of a gaseous fluid mixture through the apparatus or
part thereof or (2) regulate the movement from the apparatus
of an accumulated separated constituent exclusive of that
which may be retained in or on the separating media itself.
(1) Note. Time is not considered a "condition" in this
definition. For separators with timing means see subclasses
424+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for electric field separation apparatus with control
means responsive to sensed condition.
109 for solid sorbent apparatus with control means
responsive to sensed condition.
156 for degasifying means for liquid with control means
responsive to sensed condition.
244 for gas separation apparatus with gas and liquid contact
means having control means responsive to sensed condition.
SEE OR SEARCH CLASS:
55, Gas Separation, subclass 283 for automatically
controlled filter or separator wall cleaning means or
subclass 352 for automatically controlled means causing
movement of a continuous or indefinite length separating
media into or out of the gas stream.
95, Gas Separation: Processes, 1 for processes of gas
separation with control responsive to sensed condition.
Subclass:
398
Ejection of residue container or separating unit (e.g.,
filter or bag, etc.):
This subclass is indented under subclass 397. Apparatus
including means to move the separated constituent (residue)
collecting means or the media which effects separation wholly
or partially from its normal operating position in the
apparatus and to a position apart and operatively
disconnected from other media or collecting means remaining,
if any, to thereby permit disposal thereof without direct
effect upon the other media or collecting means.
SEE OR SEARCH CLASS:
55, Gas Separation, 351 for means to remove a portion of a
continuous separating media from its normal use position or
subclass 362 for nonautomatic ejecting means for flexible or
collapsible separator bags.
Subclass:
399
Gas cutoff or diversion:
This subclass is indented under subclass 397. Apparatus
having means in which the gaseous fluid mixture is prevented
from passing through the apparatus by diverting its flow,
blocking it by some stop means, or by causing cessation of a
flow effecting means.
Subclass:
400
Gas pressure responsive means:
This subclass is indented under subclass 399. Apparatus in
which the flow regulating means is actuated by a separate
sensing means responsive to a pressure exerted thereon by the
gaseous fluid mixture or a separated gaseous constituent.
SEE OR SEARCH CLASS:
55, Gas Separation, 310 and 313 for pressure relief and
separator bypass means directly responsive to a force exerted
thereon by the gaseous fluid mixture.
95, Gas Separation: Processes, 19 for processes of gas
separation with control responsive to pressure.
Subclass:
401
And temperature responsive means:
This subclass is indented under subclass 400. Apparatus
which is provided with means to detect temperature or a
change therein and to control operation of the apparatus
based upon the detected temperature or change therein.
Subclass:
402
Plural gas pressure responsive means:
This subclass is indented under subclass 400. Apparatus
which has more than one gas pressure responsive means.
Subclass:
403
For vacuum producing means (e.g., vacuum cleaner, etc.):
This subclass is indented under subclass 400. Apparatus in
which there is a means to produce a reduced pressure (e.g.,
vacuum cleaner, etc.).
Subclass:
404
Collecting bag presence responsive means:
This subclass is indented under subclass 399. Apparatus in
which the sensing means detects presence of a collecting bag
for the separated constituent in order to actuate the flow
regulating means for the gaseous fluid mixture.
Subclass:
405
By response to accumulated separated liquids or solids:
This subclass is indented under subclass 399. Apparatus in
which the flow regulating means is actuated by amount of
liquids or solids separated and retained by the apparatus.
Subclass:
406
By float:
This subclass is indented under subclass 405. Apparatus in
which a buoyant body supported on accumulated liquid actuates
the flow regulating means.
Subclass:
407
Temperature or humidity responsive:
This subclass is indented under subclass 399. Apparatus in
which the flow regulating means is actuated in response to a
temperature or humidity variance sensing means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
111 for solid sorbent apparatus with control means
responsive to concentration and subclass 112 for solid
sorbent apparatus with control means responsive to
temperature.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 10 for processes of
gas separation with control responsive to humidity and
subclasses 14+ for processes of gas separation with control
responsive to temperature.
Subclass:
408
Regulation of separated constituent discharge:
This subclass is indented under subclass 397. Apparatus
wherein removal from the apparatus of a constituent which has
been separated from the gaseous fluid mixture and accumulated
is automatically controlled in response to a sensed
condition.
SEE OR SEARCH CLASS:
236, Automatic Temperature and Humidity Regulation,
subclasses 53-60 for thermostatically controlled steam
condensate traps.
Subclass:
409
By liquid accumulation responsive float:
This subclass is indented under subclass 408. Apparatus in
which the sensing means comprises a buoyant body supported on
accumulated liquid which has been separated from the gaseous
fluid mixture and retained by the apparatus, the buoyant body
actuating the liquid removal regulating means in response to
the amount of liquid accumulation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
157 for degasifying means for liquid with liquid level
sensing means.
Subclass:
410
Side discharge from reservoir:
This subclass is indented under subclass 409. Apparatus
wherein the removal from the apparatus of the accumulated
liquid is through a surface joining the top and bottom of a
container or receptacle holding the liquid.
Subclass:
411
Control valve in line external to reservoir:
This subclass is indented under subclass 410. Apparatus in
which the liquid flow regulating means is a control valve
located in a pipe outside of the reservoir.
Subclass:
412
Control valve in external bottom discharge line from
reservoir:
This subclass is indented under subclass 409. Apparatus in
which the liquid flow regulating means is a control valve
located in a pipe exiting the underside of a container or
receptacle holding the liquid.
Subclass:
413
WITH SAMPLING MEANS:
This subclass is indented under the class definition.
Apparatus having means to remove a portion of a gaseous fluid
mixture or a constituent thereof from the gas separation
apparatus for purposes of analysis.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 863 for samplers. See
particularly subclasses 863.21+ for samplers with constituent
separation. See section III of class 96 for the line between
these two classes.
Subclass:
414
WITH INSPECTION MEANS:
This subclass is indented under the class definition.
Apparatus having means to permit viewing or examination of
the condition of the apparatus or of gaseous fluid mixture or
a constituent thereof inside the apparatus.
Subclass:
415
Translucent:
This subclass is indented under subclass 414. Apparatus in
which the means is a material that transmits and diffuses
light so that objects behind the material are not clearly
perceived.
Subclass:
416
Transparent:
This subclass is indented under subclass 414. Apparatus in
which the means is a material that transmits light so that
objects behind the material are clearly perceived.
Subclass:
417
WITH SIGNALS, INDICATORS, MEASURING, OR TESTING MEANS:
This subclass is indented under the class definition.
Apparatus having information giving means of an audible or
visual nature (other than fixed exhibitors, such as signs,
etc.) that give information about an apparatus or process
characteristic or change therein or having means to detect an
apparatus or process characteristic or change therein.
SEE OR SEARCH CLASS:
116, Signals and Indicators, particularly 67 for alarms and
200+ for indicators.
340, Communications: Electrical, 500 for electrical
automatic condition responsive indicating systems.
Subclass:
418
Light signal:
This subclass is indented under subclass 417. Apparatus in
which the information giving means is a device that generates
electromagnetic radiation that may be perceived by the
unaided human eye.
Subclass:
419
Sound signal:
This subclass is indented under subclass 417. Apparatus in
which the information giving means is a device that generates
a vibratory disturbance in the pressure and density of a
fluid that may be perceived by the unaided human ear.
Subclass:
420
Temperature measuring means:
This subclass is indented under subclass 417. Apparatus
having means in which temperature or a change therein is
detected.
Subclass:
421
Pressure measuring means:
This subclass is indented under subclass 417. Apparatus
having means in which pressure or a change therein is
detected.
Subclass:
422
Gas flow rate measuring means:
This subclass is indented under subclass 417. Apparatus
having means in which gas flow rate or a change therein is
detected.
Subclass:
423
Position measuring means:
This subclass is indented under subclass 417. Apparatus
having means in which the location of an apparatus part or a
change in the location of an apparatus part is detected.
Subclass:
424
WITH TIMING OR CHANGEABLE PROGRAMMING MEANS:
This subclass is indented under the class definition.
Apparatus which is provided with control means for storing
coded instructions or other data necessary to regulate
operation of the separation apparatus or causing various
operations to occur according to preset timing sequences or
to last for predetermined durations (e.g., timer switches,
etc.).
(1) Note. The control means is not directly responsive to a
sensed condition.
Subclass:
425
Of cleaning mechanism for separating media:
This subclass is indented under subclass 424. Apparatus in
which the timing or changeable programming means is for the
control of a mechanism that removes separated constituents or
residue from a separating media.
Subclass:
426
Sequential cleaning of plural separating media:
This subclass is indented under subclass 425. Apparatus
having two or more separating media from which residue or
separated constituents are removed one after another.
Subclass:
427
Multiple bag-type filters in chamber:
This subclass is indented under subclass 426. Apparatus
having a plurality of separating media comprised of nonrigid
cohesive material of essentially globular, tubular, or
cylindrical container configuration which encloses a space
and has at least one opening for passing gas into or out of
the separating media, the separating media comprised in part
or entirely of gas permeable filter material.
Subclass:
428
For control of pneumatic reverse flushing:
This subclass is indented under subclass 425. Apparatus in
which the control is of the means providing a cleaning gas
into contact with the separating media in a direction
opposite that of the gaseous fluid mixture during its
separation.
Subclass:
429
For advancing filter media:
This subclass is indented under subclass 424. Apparatus in
which the timing or changeable programming means is for the
control of movement of a foraminous or porous mass, which
separates solid or liquid particles from the gaseous fluid
mixture by entrapment and retention while permitting gaseous
or vaporous constituents to pass through, through the
apparatus.
FOREIGN ART COLLECTIONS
The definitions for FOR 100-FOR 176 below correspond to the
definitions of the abolished subclasses under Class 55 from
which these collections were formed. See the Foreign Art
Collection schedule for specific correspondences. {Note: The
titles and definitions for indented art collections include
all the details of the one(s) that are hierarchically
superior.}
Subclass: FOR 101
Foreign art collection including apparatus comprising means
to sense a condition which may or may not occur, or a change
in such condition or a lack or such a condition or the result
of such a condition, the sensing means causing or permitting
operation of a separate means for controlling, without the
intervention of a human attendant, means to (1) regulate
(e.g., divert, halt or commence) the flow of system fluid
through the apparatus or part thereof or (2) regulate the
movement from the apparatus of accumulated separated
constituent exclusive of that which may be retained in or on
the separating media itself.
Subclass: FOR 102
Foreign art collection including apparatus having means to
move the separated material (residue) collecting means or the
media which effects separation wholly or partially from its
normal operating position in the apparatus and to a position
apart and operatively disconnected from other media or
collecting means remaining, if any, to thereby permit
disposal thereof without direct effect upon the said others.
Subclass: FOR 103
Foreign art collection including apparatus in which the
system fluid is prevented from passing through the apparatus
by diverting its flow, blocking it by some stop means, or by
causing cessation of the flow effecting means.
Subclass: FOR 104
Foreign art collection including apparatus in which the flow
control means is actuated by a separate sensing means
responsive to a pressure exerted thereon by the system
fluid.
Subclass: FOR 105
Foreign art collection including apparatus in which the
sensing means senses the presence of a container for
separated material to cause or permit actuation of a control
means for system fluid.
Subclass: FOR 106
Foreign art collection including apparatus in which the flow
control function is initiated by the amount of constituent
material separated and retained by the apparatus.
Subclass: FOR 107
Foreign art collection including apparatus in which a buoyant
body supported on accumulated liquid initiates the flow
control function.
Subclass: FOR 108
Foreign art collection including apparatus in which the means
for controlling the system fluid flow is actuated in response
to a temperature or humidity variance sensing means.
Subclass: FOR 109
Foreign art collection including apparatus wherein the
discharge from the apparatus of a constituent which has been
separated from the system fluid and accumulated is
automatically controlled in response to a sensed condition.
Subclass: FOR 110
Foreign art collection including apparatus in which the
sensing means comprises a buoyant body supported on
accumulated liquid which has been separated from the system
fluid and retained by the apparatus, the buoyant body
initiating the control function in response to the amount of
liquid accumulation.
Subclass: FOR 111
Foreign art collection including apparatus having (A) means
to bring the system fluid into (1) intimate confluent,
counter current or generally mingling relationship with a
liquid furnished from a separate supply for such liquid or
(2) contact with the surface of a reservoir or supply tank of
liquid or (B) liquid distributing means for an apparatus part
for cleaning thereof or the like.
Subclass: FOR 112
Foreign art collection including apparatus provided with a
conduit or flow conductor for passing a nonsystem fluid
relative to but not in direct contact with at least a portion
of a bounded system fluid stream to effect heat exchange
therebetween, said nonsystem fluid being separate and
distinct from the system fluid.
Subclass: FOR 113
Foreign art collection including apparatus having two or more
unlike means which effect liquid contact with the system
fluid or liquid distribution to an apparatus part.
Subclass: FOR 114
Foreign art collection including apparatus having means for
dividing system fluid into two or more flowing streams so
that less than all of said divided streams are brought into
direct contact with a liquid (e.g. bath, sheet or spray) in
at least one phase of the separating operation.
Subclass: FOR 115
Foreign art collection including apparatus in which means
responsive to or actuated by velocity or pressure of the
flowing system fluid affects movement of treating liquid to,
from, or within the apparatus.
Subclass: FOR 116
Foreign art collection including apparatus having direct
responsive or other nonautomatic control means for the system
fluid to alter or determine the amount of liquid carried or
retained by the said controlled fluid.
Subclass: FOR 117
Foreign art collection including apparatus having means (1)
to control the inflow of treating liquid to the apparatus by
means responsive to a condition of the said liquid, the
system fluid or the apparatus, or (2) to prevent more than a
desired quantity of liquid to be retained by the apparatus in
accordance with some predetermined liquid level requirement.
Subclass: FOR 118
Foreign art collection including apparatus having means to
(1) remove contaminants or foreign matter from the liquid (2)
add agents (e.g. anti-foamers or wetting agent) to said
liquid, (3) strip sorbents or remove a diluting fluid from
the liquid and make the liquid sufficiently strong to further
treat the system fluid (i.e. reconcentrate) or (4) change the
temperature or other physical characteristics (e.g. density,
viscosity) of the liquid.
Subclass: FOR 119
Foreign art collection including apparatus having (1) manual
or power operated means (e.g. pump) located at some point in
a liquid recirculation system for recirculating at least a
portion of the liquid back to the point of initial use, or
(2) means to drain, control the flow of, or return a treating
liquid to a liquid bath or reservoir spaced apart from the
contact zone.
Subclass: FOR 120
Foreign art collection including apparatus having a
continuously or intermittently moving liquid discharging or
applying means to effect contact of the said liquid with the
system fluid or with an apparatus part.
Subclass: FOR 121
Foreign art collection including apparatus in which the
liquid discharging or applying means (e.g. sorbent filter
pad) is directly contacted by the gaseous system fluid to
effect gas-liquid contact.
Subclass: FOR 122
Foreign art collection including apparatus in which there are
means for moving the liquid discharging or applying means or
some part thereof between a submerged position in a liquid
bath and a position for contact by the system fluid.
Subclass: FOR 123
Foreign art collection including apparatus having means to
apply liquid to a member comprised of (1) a plurality of
discrete solids or (2) wick-like or fibrous massed material,
said member providing interstices and thereby surface
extending paths for liquid contact of the system fluid
passing therethrough.
Subclass: FOR 124
Foreign art collection including apparatus in which the
member has one of its extremities submerged in a liquid
supply tank or reservoir.
Subclass: FOR 125
Foreign art collection including apparatus comprising a
chamber or static flow guide means designed to cause the
system fluid to spin about an axis.
Subclass: FOR 126
Foreign art collection including apparatus having means
defining system fluid flow paths arranged so that one path
flows about or surrounds a center or inner axial path and
having means to distribute liquid in the centermost of the
paths.
Subclass: FOR 127
Foreign art collection including apparatus under subclass 235
having liquid distributing means arranged coincident with or
upstream of the whirler or rotator means.
Subclass: FOR 128
Foreign art collection including apparatus comprising means
projecting, sprinkling or distributing the liquid in drop,
mist or sheet form.
Subclass: FOR 129
Foreign art collection including apparatus having a bath of
treating liquid and system fluid flow conducting means
arranged to direct the system fluid to the region of the bath
to make contact therewith, to thereby generally reverse the
direction of system fluid flow.
Subclass: FOR 130
Foreign art collection including apparatus in which the
system fluid is impinged against or passed through a moving
liquid mass or cascade as distinguished from spray drops or
mist, said mass being extremely thin in relation to its
length and breadth, said mass being caused to flow by means
other than system fluid contact or disturbance of a liquid
supply bath or reservoir.
Subclass: FOR 131
Foreign art collection including apparatus in which the
system fluid is impinged against a liquid as the liquid is
flowing across and in contact with an impermeable surface.
Subclass: FOR 132
Foreign art collection including apparatus under subclass 220
comprising means to apply a cleaning liquid to the separating
media as by sprinkling, projecting, washing down or
submerging in a bath.
Subclass: FOR 133
Foreign art collection including apparatus wherein the means
for cleaning an apparatus part comprises a means for dipping
or submerging such part in a bath.
Subclass: FOR 134
Foreign art collection including apparatus having a reservoir
of treating liquid and a system fluid flow conducting means
whereby the system fluid is brought into contact with said
liquid.
Subclass: FOR 135
Foreign art collection including apparatus having (1) a gas
escape means so arranged as to prevent system fluid blow back
in the direction of the reservoir or (2) a supplemental
liquid chamber or a liquid directing or retaining means to
accept or channel liquid displaced from the reservoir by blow
back.
Subclass: FOR 136
Foreign art collection including apparatus having means for
maintaining the liquid at or near the surface of the bath in
a relatively quiescent state or having means which prevents
the liquid of the bath from escaping during other than normal
attitudes of the apparatus.
Subclass: FOR 137
Foreign art collection including apparatus having means
retained or mounted for movement in the reservoir, the
movement of which increases the contact relationship of the
system with the liquid in said reservoir.
Subclass: FOR 138
Foreign art collection including apparatus having a gas
separating media of non-liquid form arranged vertically above
the reservoir in the normal use attitude.
Subclass: FOR 139
Foreign art collection including apparatus having system
fluid conducting means arranged to cause distortion of the
surface of the bath into a jet-like spray or a lifting up of
the surface of the bath.
Subclass: FOR 140
Foreign art collection including apparatus wherein the
separating media is of the filter type (i.e. solids or vapor
removal is effected by blockage or coalescence by fine
openings or interstices).
Subclass: FOR 141
Foreign art collection including apparatus having a system
fluid flow directing or blocking means adjacent the upstream
face of the media to thereby restrict or limit the area of
said media face exposed to the system fluid flow.
Subclass: FOR 142
Foreign art collection including apparatus in which the media
is of annular configuration and is coaxial with a gas passage
at its center.
Subclass: FOR 143
Foreign art collection including apparatus comprising a
removable liquid retaining receptacle situated for gravity
flow of the liquid from the filter medium to the said
receptacle.
Subclass: FOR 144
Foreign art collection including apparatus having means to
prevent or discourage the egress of liquid from the media by
gas flow action or capillarity, usually at the downstream
boundary of said media.
Subclass: FOR 145
Foreign art collection including apparatus having an inlet
conductor for the system fluid which extends below the
surface of the liquid to effect subsurface contact of the
system fluid and liquid.
Subclass: FOR 146
Foreign art collection including apparatus having an inlet
conductor for the system fluid which extends below the
surface of the liquid to effect subsurface contact of the
system fluid and liquid.
Subclass: FOR 147
Gas separating means downstream of contacting means: Foreign
art collection including apparatus having nonliquid means to
separate constituents from the system fluid located beyond
the liquid contacting means in the direction of flow.
Subclass: FOR 148
Parallel vanes: Foreign art collection including apparatus in
which the nonliquid means comprises at least two plates
between which the gas flows in a tortuous or sinuous path,
said plates being bent, deformed or provided with
projections, and arranged relatively one to the other so that
a bend, deformation or projection of one plate is spaced from
the corresponding bend, etc. of the other, so as to provide
substantially constant area for the gas flow.
Subclass: FOR 149
Overlapping vanes: Foreign art collection including apparatus
in which the nonliquid means comprises a plurality of surface
means which effects an abrupt change in direction of the
system fluid gas flow or guides said gas flow to cause the
heavier constituents thereof to dropout and remain behind,
while the lighter constituents (e.g., clean gas) flow on, at
least a portion of each surface means being superposed with
respect to the next adjacent in the direction of gas flow.
Subclass: FOR 150
Centrifugal: Foreign art collection including apparatus in
which the nonliquid means comprises a nonstatic member
designed to cause the system fluid to rotate or spin around
an axis.
Subclass: FOR 151
Impact plate: Foreign art collection including apparatus in
which the nonliquid means comprises a surface the flow path
of the system fluid to be impinged upon by the fluid for
redirecting or altering the flow path for separation of
nongaseous constituents therefrom.
Subclass: FOR 152
Perforated plate: Foreign art collection including apparatus
in which the nonliquid means comprises a plate having at
least one opening and being positioned transverse to the flow
path of the system fluid.
Subclass: FOR 153
Heat exchange: Foreign art collection including apparatus in
which the nonliquid means comprises a means for cooling the
temperature of the system fluid to condense and separate.
Subclass: FOR 154
Foreign art collection including apparatus having a nonliquid
separating means arranged upstream of the liquid contacting
means.
Subclass: FOR 155
Foreign art collection including apparatus in which the
nonliquid means for separating the system fluid is of the
filter type (i.e., foraminated plates or closely or
intimately arranged elements or members which collectively
act as a barrier to physically hold back or retain at least
one constituent of a mixture while permitting passage of the
remainder).
Subclass: FOR 156
Foreign art collection including apparatus having system
fluid separating means arranged upstream of the liquid
contact means, said separating means comprising a surface
means which effects an abrupt change in direction of the
system fluid gas flow, or guides said gas flow, to cause the
heavier constituents thereof to drop out while the lighter
constituent (e.g., clean gas) flows on.
Subclass: FOR 157
Foreign art collection including apparatus providing in-flow
means for a nonliquid material other than the system fluid,
said material commingling with and effecting a change of said
system fluid, but not including inflow of ambient air for
purposes of pressure relief or addition of air for mere flow
induction of system fluid.
Subclass: FOR 158
Foreign art collection including apparatus in which a solid,
or a gas derived from a normally solid source, is the
material introduced into the system fluid.
Subclass: FOR 159
Foreign art collection including apparatus comprising steam
as the material.
Subclass: FOR 160
Foreign art collection including apparatus provided with a
discharge port for liquids or solids formed by temperature
reduction resulting from the mixing of the system fluid and
the material.
Subclass: FOR 161
Foreign art collection including apparatus in which the
in-flow means is positioned to add the material to the system
fluid after the system fluid has been separated at least in
one stage.
Subclass: FOR 162
Foreign art collection including apparatus in which the
material is a gas and may enter through the inflow for the
system fluid or through a distinct inflow path, and in which
(1) there is a single flow controller located in the common
inflow line to regulate the proportion or mixture of the
diverse gases or (2) controllers individual to each inflow
path are provided for the regulation.
Subclass: FOR 163
Foreign art collection including apparatus provided with
means for affecting the temperature of the system fluid, or
to prevent heat exchange between the system fluid and the
surrounding atmosphere.
Subclass: FOR 164
Foreign art collection including apparatus provided with a
conduit or flow conductor for passing a nonsystem fluid
relative to but not in direct contact with at least a portion
of a bounded system fluid stream to effect heat exchange
therebetween, said nonsystem fluid being separate and
distinct from the system fluid.
Subclass: FOR 165
Foreign art collection including apparatus in which the
nonsystem fluid conduit or conductor is structurally
associated with the confined system fluid stream at or
proximate the locus of separation so that the temperature of
the system fluid is affected at the separator.
Subclass: FOR 166
Foreign art collection including apparatus having (1) means
to indicate or predetermine the rate or amount of system
fluid flow passing through the apparatus, (2) means to remove
a portion of constituent material from the system fluid for
purposes of analysis, or (3) means to determine some physical
characteristic (e.g. weight, temperature) of the system
fluid.
Subclass: FOR 167
Foreign art collection including apparatus having horological
means or selectively changeable cyclical control means for
(1) limiting the duration of operation or (2) determining the
interval or period between operations of the apparatus or
some part thereof.
Subclass: FOR 168
Foreign art collection including apparatus in which the
period or cycle is for the control of or is related to the
mechanism which removes constituent material or residue from
the separating media.
Subclass: FOR 169
Foreign art collection including apparatus having two or more
separating members or elements from which residue or
separated constituents is removed one after another.
Subclass: FOR 170
Foreign art collection including apparatus having information
giving means of an audible or visual nature (other than fixed
exhibitors e.g., signs) which give information about or
permit viewing of a condition of the apparatus or extent of
motion or movement of some apparatus part.
Subclass: FOR 171
Foreign art collection including apparatus in which the
information is caused to be given by a chemical or electrical
change depending on the presence or absence of water or water
vapor.
Subclass: FOR 172
Foreign art collection including apparatus having means other
than mere flow channels or conducting means for the system
fluid for silencing the flow of said fluid through the
apparatus as by sound traps or barriers, or as by fabricating
surfaces of the separator from material having sound
absorbing properties.
Subclass: FOR 173
Foreign art collection including apparatus having means for
producing compressional vibratory wave energy in a fluid
medium to effect or enhance separation, said waves being
below, within, or beyond the audible spectrum.
Subclass: FOR 174
Foreign art collection including apparatus having (1)
material separating flow passages resulting from closely
spaced parallel or concentrically arranged members along the
faces of which system fluid is constrained to pass without
reliance upon change of direction for separation but which
provide either (a) a screen or grid-like pattern at the
inflow end of the arrangement or (b) surfaces on which
constituent material may settle or drop; or (2) surface
member(s) with somewhat exaggerated nap-like or pile-like
covering along which the system fluid moves such that in
effect the constituent material is swept out of the fluid
stream.
Subclass: FOR 175
Foreign art collection including apparatus having means
acting to render the apparatus parts or constituent materials
passing through or being delivered from the apparatus in a
sterile condition.
Subclass: FOR 176
Foreign art collection including apparatus having means to
catch or otherwise dispose of material, exclusive of
concentrate or residue, per se, separated from the system
fluid, said material dripping, leaking, or otherwise being
lost through other than the discharge outlets especially
provided for the constituents of the system fluid.
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000