U.S. PATENT AND TRADEMARK OFFICE
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U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
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Class 055
GAS SEPARATION
Class Definition:
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
Class 55 is an integral part of Class 96 and follows subclass
429 in Class 96 in the schedule hierarchy. Class 55 uses the
class definition and class lines established in and for Class
96. Class 55 provides for the gas separation apparatus that
has not yet been reclassified.
SUBCLASSES
Subclass:
282
This subclass is indented under the class definition.
Apparatus having means (1) to apply a nonliquid cleaning
agent (gas or solid) to a separator part, (2) to remove
separated constituents adhering to the surfaces or from
within the interstices of the separating media, or (3) to
prevent (in as far as possible) accumulation of constituents
on the separating surfaces by some active means or through
the use of materials having special characteristics or
properties for such purpose.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 228+ for gas
separation apparatus with means using liquid to clean the
separating apparatus and subclasses 425+ for gas separation
apparatus having means timing or programming the cleaning
mechanism.
Subclass:
282.1
Having insulation:
This subclass is indented under subclass 282. Apparatus
provided with means to prevent heat exchange between a
gaseous fluid mixture or separated constituent and a
surrounding atmosphere.
Subclass:
282.2
With heating or cooling means:
This subclass is indented under subclass 282. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent.
Subclass:
282.3
Residue burned:
This subclass is indented under subclass 282.2. Apparatus
having means for removing the separated constituents adhering
to the surfaces or from within the interstices of the
separating media by combustion.
Subclass:
282.4
Two confined fluids in indirect contact:
This subclass is indented under subclass 282.2. Apparatus
provided with a conduit or flow conductor for passing a
nonsystem fluid proximate to but not in direct contact with
at least a portion of a bounded gaseous fluid mixture or
separated constituent to effect heat exchange therebetween,
the nonsystem fluid being separate and distinct from the
bounded gaseous fluid mixture or separated constituent.
Subclass:
282.5
Heat exchanger is part of separator or is contiguous
therewith:
This subclass is indented under subclass 282.4. Apparatus in
which the nonsystem fluid conduit or conductor is
structurally associated with the confined gaseous fluid
mixture or separated constituent at or proximate to the locus
of separation so that the temperature of the confined gaseous
fluid mixture or separated constituent is affected at the
separator.
Subclass:
283
This subclass is indented under subclass 282. Apparatus
comprising a means to sense a condition which may or may not
occur, or a lack of such condition, or the result of such
condition, the sensing means causing or permitting operation
of a separate means for controlling said cleaning agent
applying means, said constituent removing means or said
accumulation preventing means, without the intervention of a
human attendant.
(1) Note. An example of an automatic means under this
definition is a device in which a diaphragm, responding to a
differential pressure across the media, an increased pressure
upstream of the media or a decreased pressure downstream of
the media, moves a stem attached to the diaphragm to open a
valve for applying a cleaning agent to the media.
An example of means which is not automatic control under this
definition is a motor or clock driven cam which controls the
valve for applying a cleaning agent at predetermined times or
revolutions.
Subclass:
284
This subclass is indented under subclass 282. Apparatus
having two or more substantially independently functioning
separating media and further including means whereby the
media are serially refurbished in some predetermined order
defined by the law of the machine.
(1) Note. For this and the indented subclasses the
qualification of independent separating media is considered
met by apparatus in which a running length of separating
material has been supported or maintained in a manner to form
from such length a plurality of separate and distinct media
simultaneously used for separation, i.e. some portions at the
region of support thereof blocked from gas separating
operation.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 426+ for gas
separation apparatus having means for sequential cleaning of
plural separating units with timing or changeable programming
means.
Subclass:
285
This subclass is indented under subclass 284. Apparatus in
which the separating media are arranged about a horizontal
axis and form a type of circular cylinder or wheel and
spoke-like arrangement with the said entities at the
periphery or rim.
Subclass:
286
This subclass is indented under subclass 284. Apparatus
having means to prevent flow of system fluid through selected
ones of the media.
Subclass:
287
This subclass is indented under subclass 286. Apparatus in
which the operation of the flow preventing means is
controlled simultaneously with or by the refurbishing
mechanism or the control therefor.
Subclass:
288
This subclass is indented under subclass 282. Apparatus
wherein cleaning of the separating media is dependent on and
occurs as a direct result of the actuation or operation of
(1) means (e.g. valve) for completely preventing the flow of
system fluid to the separating media or (2) means (e.g.
on-off gas flow switch) for completely closing down the
separating operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 286+ for devices for sequentially cleaning a
plurality of separating media combined with means for
preventing the flow of gas undergoing separation from
reaching the media which is being cleaned.
Subclass:
289
This subclass is indented under subclass 282. Apparatus
comprising a multiple tined member peculiarly adapted to
enter spaced interstices, openings or parallel bars or wires
of the media to remove accumulated solids either by a motion
generally at right angles to the plane of said media or
longitudinally of the elements thereof.
Subclass:
290
This subclass is indented under subclass 282. Apparatus
comprising means for refurbishing media of the endless type
(e.g. of cylindrical form) or media which is handled and
supported without regard to a leading or trailing edge or
end, said media being in motion during use for its separating
function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 351+ for similar separating media.
Subclass:
291
This subclass is indented under subclass 282. Apparatus
involving the use of two or more cleaning agent applying,
constituent removing or accumulation preventing means of
different types (e.g. pneumatic nozzle and vibrating means).
Subclass:
292
This subclass is indented under subclass 282. Apparatus
having means for producing compressional vibratory wave
energy in a fluid medium in relation to or associated with
the separating media to cause adhered constituents to be
removed from the separating media, said waves being below,
within or beyond 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. Devices in which cleaning of the separating media is
effected by pressure pulses of a gas will be found in
subclasses 293 and 301+.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclass 389 for gas
separation apparatus using sound waves to effect or enhance
separation.
Subclass:
293
This subclass is indented under subclass 282. Apparatus
comprising means to effect motion of small amplitude and
relative high frequency of the media by contact of gasiform
fluid therewith to effect the cleaning thereof.
Subclass:
294
This subclass is indented under subclass 282. Apparatus
comprising a gasiform fluid discharging means directed
against or along the media and being supported for motion
relative to said media to dislodge accumulated constituent
material.
Subclass:
295
This subclass is indented under subclass 282. Apparatus in
which a nonfluid agent (e.g., brush, rapper, scraper blade)
moves relative to the apparatus to effect a physical contact
therebetween or to advance across a surface thereof.
Subclass:
296
This subclass is indented under subclass 295. Apparatus
comprising an agent which has a prescribed relative movement
across, and in contact with, at least a portion of a surface
of a separating media.
Subclass:
297
This subclass is indented under subclass 296. Apparatus in
which the operation of the agent to traverse the media is
integrated with the separating apparatus operation such that
the two operations function simultaneously.
Subclass:
298
This subclass is indented under subclass 297. Apparatus in
which the agent is caused to move as a result of the flow of
system fluid through the apparatus.
Subclass:
299
This subclass is indented under subclass 296. Apparatus
wherein the media is of nonrigid form and is flexed or
deformed by contact of the agent therewith.
Subclass:
300
This subclass is indented under subclass 295. Apparatus in
which either the separating surface or some portion of the
apparatus is struck by the agent with relatively sharp and
repeated blows to shake the separating media.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 32+ for electric
field separation apparatus having vibrating, jarring, or
rapping means for cleaning parts of the apparatus.
Subclass:
301
This subclass is indented under subclass 282. Apparatus for
renovating or refurbishing a coherent sheet or mass type
filter media.
SEE OR SEARCH THIS CLASS, SUBCLASS:
282 for means for cleaning discrete fibrous or particulate
material filter media.
351 for continuous type filters with means for advancing or
replacing the used filter with a new or cleaned portion
thereof.
Subclass:
302
This subclass is indented under subclass 301. Apparatus in
which a gasiform fluid is brought into contact with the media
in a direction opposed to system fluid flow during
separation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
294 for pneumatic scanning nozzles.
Subclass:
303
This subclass is indented under subclass 302. Apparatus in
which the gasiform fluid is bled or taken at one face
(upstream or downstream) of the media and directed to the
other.
Subclass:
304
This subclass is indented under subclass 301. Apparatus
comprising means effecting or enabling filter motion or a
relative movement among portions thereof whereby
accumulations are removed or prevented.
Subclass:
305
This subclass is indented under subclass 304. Apparatus
wherein the means is arranged for actuation by a human being
(e.g. by hand).
Subclass:
306
This subclass is indented under the class definition.
Apparatus associated with an aircraft and related to the air
intake means of the power plant (e.g., ram jet engine) of
said aircraft to prevent the inflow of ground or air borne
objects or creatures to the said power plant by screen or
deflector like means.
(1) Note. Gratings, grids, grilles and foraminous members
structurally similar to the devices of this subclass are
classifiable in many other classes as partially indicated
under Search Class as follows.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclasses
238+ for scrapers comprising wire or pivoted link mats.
52, Static Structures (e.g., Buildings), subclasses 633+
for an openwork-structure not elsewhere provided for and see
the notes for other classes having openwork structures.
166, Wells, subclasses 227+ for screens or other filters
disclosed for separating solids from the earth fluid flowing
into a well conduit.
239, Fluid Sprinkling, Spraying, and Diffusing, subclass
127.1 and 265.11+ for a reaction motor discharge nozzle
which may have a screen or deflector associated with the
fluid inlet.
244, Aeronautics, appropriate subclasses for similar means
involving modified aircraft structure.
245, Wire Fabrics and Structure, subclasses 2+ for screens
or grids comprising wires looped or twisted around each
other.
256, Fences, various subclasses for similar devices.
428, Stock Material or Miscellaneous Articles, subclasses
131+ for a single or plural layer stock material product in
the form of a web or sheet including an apertured component.
454, Ventilation, appropriate subclasses for gratings,
louvers, or screens associated with chimneys, ventilation air
inlets, or registers.
Subclass:
307
This subclass is indented under the class definition.
Apparatus comprising a separator means positioned at least in
part within a confined system fluid path, there being an
unobstructed space between it and the side wall of the flow
path as supported therein and being further comprised of a
member or material having (1) multiple openings, pores or
passages (2) massed discrete filter particles, or (3) a
single opening therethrough.
(1) Note. A unit is any member or assemblage of members
adapted to be handled as a subassembly when being associated
with a conduit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for open separator bypass means provided by
discontinuous separator members placed at the terminus of the
flow line or there beyond and not relying upon valves or
other movable flow controlling means.
422 for movably mounted or supported media adjustable to
various positions of use or to nonuse.
subclasses 445+ for members which are either perforated and
coextensive with the flow path wall or solid and spaced from
the wall, so that the mixture has only one path to follow,
either around or through the member.
Subclass:
308
This subclass is indented under subclass 307. Apparatus
comprising at least two of said separator means which are
substantially identical and are spaced within the confined
flow path in the direction of gas flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 442+ for serially spaced deflector surfaces.
subclasses 482+ for serially spaced filter members.
Subclass:
309
This subclass is indented under the class definition.
Apparatus provided with means (1) to permit total flow of the
system fluid directed through the apparatus to avoid the
separating means, or at least one stage of serially arranged
separating means, (2) to admit ambient air to the apparatus
through other than the normal inflow path of fluid to be
separated, or (3) to permit discharge or escape of system
fluid to the ambient air through other than the normal gas
effluent path.
(1) Note. Pressure relief is not a matter of mere multiple
discharge paths or inlet paths, but some modified arrangement
for flow which responds to excessive or back pressures.
(2) Note. A bypass means under this definition does not
include a mere movably or removably mounted separator means,
but does include a separating means which, in response to
certain gas pressure or flow characteristics, is moved out of
its normal use position to provide for a bypass therearound.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 372+ for gas
separation apparatus including inlet means for diverse gas or
solid for gas treatment.
Subclass:
309.1
With heating or cooling means:
This subclass is indented under subclass 309. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or the separated constituent.
Subclass:
310
This subclass is indented under subclass 309. Apparatus
having means responsive to super or sub-atmospheric pressures
within the apparatus either to discharge system fluid
therefrom to the surrounding atmosphere or to permit inflow
of air from the surrounding atmosphere through other than the
normal system fluid inlet.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 400+ for gas
separation apparatus having gas pressure responsive means for
gas cutoff or diversion.
Subclass:
311
This subclass is indented under subclass 310. Apparatus in
which the means is physically situated below the separating
means in the path of travel of the system fluid.
Subclass:
312
This subclass is indented under subclass 309. Apparatus
having valve means to permit flow of system fluid around a
separating means to thereby avoid the separating function of
at least that one separating means.
(1) Note. In this subclass are collected patents having an
auxiliary inlet which is downstream of the separator and
which is hand controlled.
(2) Note. Flow control of gas for separators in parallel
either as distinct units or as separator parts of a single
unit is not subject matter for these subclasses.
Subclass:
313
This subclass is indented under subclass 312. Apparatus in
which the means permitting flow around or by the separating
means is responsive to a force exerted thereon by the system
fluid.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 400+ for gas
separation apparatus having gas pressure responsive means for
gas cutoff or diversion.
Subclass:
314
This subclass is indented under subclass 312. Apparatus
having flow conducting means between the apparatus inlet and
outlet permitting all of the inflowing system fluid to pass
to the egress means without flowing through the separating
means or at least one stage thereof if serially arranged
distinct separators are included.
Subclass:
315
This subclass is indented under the class definition.
Apparatus having two or more discrete separators arranged one
downstream of the other, at least two of the separators being
of differing basic types.
(1) Note. Basic types of separators here included are, for
example; expansion chambers, deflectors (fixed baffles, whirl
chambers and moving members), filters (screens, porous mass
or pad, cohesive sheet material), sorbers and the like.
(2) Note. The patents in these subclasses usually comprise
separate and distinct diverse separating members. However,
in subclass 335 indented hereunder will be found integral or
connected deflectors and filters, usually a conical screen
with an upstream deflector surface for the gas to first
impinge upon and be deflected by the surface and then be
screened or filtered through the foraminous member.
(3) Note. Concentrate collection receptacles or retainers
provided with gas escape means and which serve to permit
concentrate to be in part air borne to the said receptacle
and therefore act as a secondary separator are not considered
as separators for classification with serially arranged
diverse separators under this definition, but as proper
subject matter for subclass 428.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 342+ for serially arranged multiple similar
separators.
Subclass:
315.1
With heating or cooling means or having insulation:
This subclass is indented under subclass 315. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent or having
means to prevent heat exchange between a gaseous fluid
mixture or a separated constituent and a surrounding
atmosphere.
Subclass:
315.2
Heat exchanger is part of separator or is contiguous
therewith:
This subclass is indented under subclass 315.1. Apparatus in
which a conduit or flow conductor, which permits passage of a
nonsystem fluid proximate to but not in direct contact with
at least a portion of a bounded gaseous fluid mixture or
separated constituent to effect heat exchange therebetween,
is structurally associated with the bounded gaseous fluid
mixture or separated constituent at or proximate the locus of
separation so that the temperature of the bounded gaseous
fluid mixture or separated constituent is affected at the
separator.
Subclass:
317
This subclass is indented under subclass 315. Apparatus
comprising at least one separator arranged for continuous
movement relative to a fixed point or support and effecting
separation of a gas mixture while so moving.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 400+ for a separator comprising a continuously
moving member, but not in combination with a separator of a
diverse type.
Subclass:
318
This subclass is indented under subclass 315. Apparatus
comprising separators of different basic types arranged in a
single housing or flow confining means.
Subclass:
319
This subclass is indented under subclass 318. Apparatus
comprising an enlarged section of the flow line, the enlarged
section being disclosed for retarding the velocity of the gas
mixture and allowing the heavier constituents to settle out
therefrom.
(1) Note. See the class definition, search class notes,
Classes 137 and 261, for placement of patents comprising
expansion chambers.
SEE OR SEARCH CLASS:
137, Fluid Handling, subclasses 171+ for fluid separating
traps or vents including the expansion chamber type and see
(1) Note above.
Subclass:
320
This subclass is indented under subclass 318. Apparatus
including an impingement or flow redirecting separator means
together with a separator means of the type which retains
thereon or prevents passage therethrough of nongaseous
particles, the latter being comprised of massed entangled
individual strands, massed individual discrete elements,
numerous unentangled discrete strands (brush type) or
coherent sheet porous or foraminous material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
318 for similar combinations wherein the filter comprises a
solid, rigid, porous member (e.g. sintered or ceramic).
Subclass:
321
This subclass is indented under subclass 320. Apparatus
comprising three or more separators, at least two of which
are of the same basic type, and at least one of a different
basic type, the separators of the same basic type being
spaced either transverse across, or serially along the flow
line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 342+ for multiple similar separators in series
or parallel, but with the discrete flow inlet and outlet
paths as defined therein.
subclasses 442+ for plural impingement or flow redirecting
surfaces serially spaced.
subclasses 482+ for two or more filters of the same type
arranged in series or in parallel.
Subclass:
322
This subclass is indented under subclass 321. Apparatus in
which one of the multiple similar or same basic type
separators is positioned upstream and another downstream of
one or more of a different type separator.
Subclass:
323
This subclass is indented under subclass 321. Apparatus in
which the multiple, similar separators are of the type which
retain thereon or prevent passage therethrough of nongaseous
particles.
Subclass:
324
This subclass is indented under subclass 323. Apparatus in
which the separators are spaced transversely across the flow
line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
483 and 484, for multiple filters arranged in parallel, but
not combined with a diverse separating member.
Subclass:
325
This subclass is indented under subclass 321. Apparatus in
which the multiple similar separators are of the flow
impingement or redirecting type and are spaced along the flow
path in the direction of gas flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 442+ for redirecting or impingement surfaces
spaced serially in a flow path.
Subclass:
326
This subclass is indented under subclass 325. Apparatus in
which at least one of the flow redirecting or impingement
means is provided with a basin, box, gutter or other similar
member having a closed bottom and open top for receiving and
retaining or guiding the separated heavier constituent.
Subclass:
327
This subclass is indented under subclass 320. Apparatus in
which the member first contacted with the fluid mixture in
the housing or flow confining means is of the type which
retains thereon or prevents passage therethrough of
nongaseous particles.
Subclass:
328
This subclass is indented under subclass 320. Apparatus in
which any one of the diverse separating members is supported
for motion to various positions to or from a position wherein
the member does not affect the fluid mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
422 for a filter or deflection separator, per se, supported
as herein described.
Subclass:
329
This subclass is indented under subclass 320. Apparatus in
which the means other than the impingement or flow
redirecting means comprises a mass of entangled strands or
numerous unentangled discrete strands.
SEE OR SEARCH THIS CLASS, SUBCLASS:
477 for brush type filters.
subclasses 512+ and 527+, for entangled fibrous or
strand mass type filters.
Subclass:
330
This subclass is indented under subclass 329. Apparatus in
which the means is hollow and arranged within the flow line
so that the system fluid flow is toward or away from the
central axis.
Subclass:
331
This subclass is indented under subclass 320. Apparatus in
which the impingement or flow redirecting means comprises a
member which increases in diameter in the direction of gas
flow and at its maximum diameter is provided with an arched
or curved element extending outwardly.
SEE OR SEARCH THIS CLASS, SUBCLASS:
463 for a similar impingement surface, per se.
Subclass:
332
This subclass is indented under subclass 320. Apparatus in
which the means other than the impingement or flow
redirecting means comprises a coherent sheet of porous or
apertured material (e.g. paper, woven wire or fabric).
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 495+ and 522+, for coherent sheet material
filters.
Subclass:
333
This subclass is indented under subclass 332. Apparatus in
which the means comprises two or more layers each in contact
with the next adjacent and either stacked or wound upon the
other so as to form a tubular member and so arranged in the
flow line that the system fluid flow is toward or away from
the tube axis.
Subclass:
334
This subclass is indented under subclass 332. Apparatus in
which the coherent sheet means comprises one closed and one
open end defined by a side wall to encompass a space, the
system fluid flow being into or out of the space through the
porous or apertured material.
(1) Note. The bag filter need not be capable of being
flexed or distorted while in use position as required for the
bag filters provided for in subclass 361 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
341 and 361+, for other bag type separators and see (1) Note
above.
Subclass:
335
This subclass is indented under subclass 334. Apparatus in
which the coherent sheet encompassing the space has included
therewith, in use position, an impingement or redirecting
surface so fixed or associated with the sheet as to be
contacted by the system fluid prior to said fluid coming in
contact with the sheet.
(1) Note. These filtering and deflecting elements may be
integral, one with the other. See (2) Note under subclass
315.
SEE OR SEARCH THIS CLASS, SUBCLASS:
368 for flexible or collapsible bag type separators having a
spaced interior inflow path or with means modifying air flow
in the bag usually to define a trap or collecting chamber for
the separated constituent rather than to effectuate the
separation of a constituent from the gas stream.
Subclass:
336
This subclass is indented under subclass 332. Apparatus in
which the coherent sheet like filter means tapers towards or
from a point.
(1) Note. There need not be an apex for the cone. The
material may be in the form of a frusto cone.
Subclass:
337
This subclass is indented under subclass 332. Apparatus in
which the impingement or flow redirecting means causes the
system fluid to assume a spinning or turning motion around an
axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 345+ and 447+, for other apparatus in which
separation is caused by the gas rotating around an axis.
Subclass:
338
This subclass is indented under the class definition.
Apparatus having means to direct system fluid which has
passed through a stage of separation back through or
substantially through the inlet to the apparatus or back
through a distinct stage of serially arranged separators.
(1) Note. Redirecting system fluid substantially back to
the inlet is meant to include both internal and external
arrangements of flow means wherein the redirected fluid
enters upstream of the first apparatus part which influences
the separating action.
(2) Note. Recycle apparatus may never lose control of the
system fluid; e.g., effluent may not be discharged to the
atmosphere and then sucked back again.
(3) Note. For these subclasses system fluid may be the
partially or totally cleansed effluent, or may be the gas
which has escaped to the concentrate or residue chamber.
Subclass:
338.1
With heating or cooling means:
This subclass is indented under subclass 338. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent.
Subclass:
339
This subclass is indented under subclass 338. Apparatus in
which the fluid returned to the inlet for recycle is derived
from or bled off the effluent making its way through the
apparatus cleansed gas outlet means.
(1) Note. Effluent refers to fluid which has been through a
stage of separation and is regarded as at least partially
voided of the nongaseous constituent and is departing the
system.
Subclass:
340
This subclass is indented under subclass 339. Apparatus in
which the return path for the effluent comprises a conductor
arranged exteriorly of the rest of the separator apparatus.
Subclass:
341.1
MULTIPLE BAG TYPE FILTERS IN CHAMBER:
This subclass is indented under the class definition.
Apparatus having a plurality of bag type filters (with fluid
flow ingress or egress means) located within a chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 361+ for flexible or collapsible bags.
Subclass:
341.2
Gas flow from inside to outside of filter:
This subclass is indented under subclass 341.1. Apparatus in
which the direction of gas flow is from inside to outside of
the bag type filters.
Subclass:
341.3
Modular compartments:
This subclass is indented under subclass 341.2. Apparatus in
which the chamber includes means which divide the chamber
into a plurality of compartments in such a manner that each
compartment has a wall common to an adjacent compartment and
communication between adjacent compartments is inhibited.
Subclass:
341.4
Horizontally mounted filters:
This subclass is indented under subclass 341.2. Apparatus in
which the bag type filters are horizontally disposed.
Subclass:
341.5
Modular compartments:
This subclass is indented under subclass 341.1. Apparatus in
which the chamber includes means which divide the chamber
into a plurality of compartments in such a manner that each
compartment has a wall common to an adjacent compartment and
communication between adjacent compartments is inhibited.
Subclass:
341.6
Partitioned bag filter chamber:
This subclass is indented under subclass 341.1. Apparatus in
which the chamber includes a partition means which divides
the chamber into a plurality of compartments, all of the
compartments formed by the partition means being in open
communication with one another.
Subclass:
341.7
Horizontally mounted filters:
This subclass is indented under subclass 341.1. Apparatus in
which the bag type filters are horizontally disposed.
Subclass:
341.11
With heating or cooling means or having insulation:
This subclass is indented under subclass 341.1. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent or having
means to prevent heat exchange between a gaseous fluid
mixture or separated constituent and a surrounding
atmosphere.
Subclass:
342
This subclass is indented under the class definition.
Apparatus comprising a plurality of separating devices each
having a separate and individual system fluid inlet or outlet
conduit of extended length.
(1) Note. Concentrate collection receptacles provided with
gas escape means and which serve to permit concentrate to be
in part air borne to the said receptacle and therefore may
act as a secondary separator are not considered as separators
for classification with a similar serially arranged separator
under this definition, but as proper subject matter for
subclasses 428+.
(2) Note. Cyclone or centrifugal whirl separators in
parallel are classified under this definition and will be
found in subclasses 346+ regardless of the length of the
inlet or outlet conduit. Separating devices which have whirl
producing stages in series, or other separators in series or
parallel must each have a gas inlet or outlet conduit of
length sufficient to be readily identifiable in order to come
under this definition. A device in which only the casing
wall forms the flow path for a plurality of separators is
excluded and will be found in subclasses 442+ or 482+, unless
the casing wall between series related separating devices is
modified to form a flow path portion of different area than
the preceding or following portion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 315+ for serial arrangements of cyclone and
other types of separating devices.
subclasses 428+ for residue handling means and see (1) Note
under subclass 428.
Subclass:
342.1
With heating or cooling means or having insulation:
This subclass is indented under subclass 342. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent or having
means to prevent heat exchange between a gaseous fluid
mixture or separated constituent and a surrounding
atmosphere.
Subclass:
342.2
Heat exchanger is part of separator or is contiguous
therewith:
This subclass is indented under subclass 342.1. Apparatus in
which a conduit or flow conductor, which permits passage of a
nonsystem fluid proximate to but not in direct contact with
at least a portion of a bounded gaseous fluid mixture or
separated constituent to effect heat exchange therebetween,
is structurally associated with the bounded gaseous fluid
mixture or separated constituent at or proximate to the locus
of separation so that the temperature of the bounded gaseous
fluid mixture is affected at the separator.
Subclass:
343
This subclass is indented under subclass 342. Apparatus
comprising more than one separating device each arranged in
or forming a branch of a divided fluid flow conduit to
thereby treat a portion of the divided fluid, and not the
total flow, preceded or followed by another separating device
which treats the total flow of fluid passing to or from at
least one of the branched separators.
Subclass:
344
This subclass is indented under subclass 342. Apparatus
comprising means which modifies, varies or regulates the
fluid flow to, from or among the separating devices, or
permits the portion of the fluid passing through one
separator to be substantially equal to that passing through
any other separator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 410+ and 418+, especially 413, for other devices
in which there is control of the gas to or from the
separator.
Subclass:
345
This subclass is indented under subclass 342. Apparatus
comprising a plurality of separating devices, each of which
have means to spin or rotate the system fluid.
Subclass:
346
This subclass is indented under subclass 345. Apparatus in
which each separating device is arranged in, or forms a
branch of a divided fluid flow conduit to thereby treat a
portion of the divided fluid, and not the total flow.
Subclass:
347
This subclass is indented under subclass 346. Apparatus in
which the system fluid after being separated moves in a
direction away from the inlet, i.e., is not reversed back
towards the inlet, and the axes of the system fluid inlet and
outlet of each separating device lie substantially in the
same plane.
Subclass:
348
This subclass is indented under subclass 346. Apparatus in
which each separating device has the system fluid discharged
thereinto through (1) more than one inlet, each such inlet
arranged to cause the incoming system fluid to spin or
rotate, or (2) a single inlet having a plurality of baffles
associated therewith, to cause the system fluid to spin or
rotate into or through the separator zone.
Subclass:
349
This subclass is indented under subclass 346. Apparatus
wherein each separating device comprises a separator casing
having a system fluid inflow conductor which directs the
fluid into said casing in a path other than one which
intersects or is parallel to the longitudinal axis of the
casing.
Subclass:
350.1
Filters:
This subclass is indented under subclass 342. Apparatus
comprising at least two filters.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 482+ for two or more filters not provided with
discrete and longitudinally confined gas inlets or outlets.
Subclass:
351
This subclass is indented under the class definition.
Apparatus in which the separator media is endless or of
extent greater than the gas flow path with which it is used
and including means for moving an unused or new portion of
said media to within the flow path.
(1) Note. A crank, handle or the like attached to the media
or to a support means for the media for positively moving the
media is sufficient to qualify under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
290 for means, exclusive of liquid contact, for cleaning
moving, indefinite or continuous length separating media.
474 for separator means comprising a continuous flow of
particulate filter material.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclass 42 for electric
field separation apparatus with cleaning means in which the
electrode is carried on an endless belt or the electrode is
belt type.
Subclass:
352
This subclass is indented under subclass 351. Apparatus in
which the operation of the means causing the removal or
advancing of the separator media (1) is directly responsive
to an element subjected to the presence or absence of the gas
flow, or (2) results utimately from a device sensing the
pressure or pressure differential across a portion of the gas
flow path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
283 and 288, for similar apparatus for initiating or
controlling the cleaning means of the separating media.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 397+ for gas
separation apparatus with automatic control means for gas or
nongaseous constituent discharge.
Subclass:
353
This subclass is indented under subclass 351. Apparatus made
up of a plurality of continuous or indefinite length
separating media arranged in series or parallel relationship
relative to the gas flow, or in which the separator is
comprised of a plurality of independent separating members
arranged relatively one to the other so as to form a
continuous or indefinite length separating media.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 342+ appropriate subclasses for multiple,
similar separators in parallel or series, but each having a
separate, defined gas inlet or outlet.
Subclass:
354
This subclass is indented under subclass 351. Apparatus
comprising a separating media which is advanced into the gas
stream without regard to leading or trailing ends or is fed
from or to a roll or wound package, usually outside of the
gas flow path.
(1) Note. All these members are generally of sheet form and
of nonrigid quality so that they may be distorted or caused
to change shape under normal usage.
(2) Note. A continuous media (i.e. one which is drum type
or has no free ends) is not classified in this subclass, but
is found in subclass 351.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 497+ and 500, for sheet form filters which are
maintained in nonplanar form, similar to the arrangements of
many of the sheet form separators in this subclass.
SEE OR SEARCH CLASS:
242, Winding, Tensioning, or Guiding, subclasses 550+ for
unwinding an elongated material and subclasses 570+ for a
coil holder of general use.
Subclass:
355
This subclass is indented under the class definition.
Apparatus comprising means to maintain a liquid at some
desired location to act as a stop, seal or closure between
adjacent system parts.
(1) Note. Fluent material comprised of particulate solids,
which act as a stop, seal, or closure, is proper subject
matter for this subclass if a means (e.g. a valve) is
provided to maintain said material at a desired location.
Subclass:
356
This subclass is indented under the class definition.
Apparatus including (1) means to support the apparatus with
respect to a surface comprising wheels, skids, runners or the
like for movement across such surface or (2) means such as
handles, carrying straps or the like attached to and
facilitating the repositioning or transfer of the apparatus
or apparatus part during the use or nonuse thereof.
Subclass:
357
This subclass is indented under subclass 356. Apparatus
comprising modified apparatus means grasped or held by the
hand and attached to the apparatus or apparatus part to
facilitate the movement thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 369+ 436, 478+, and 503+ and appropriate
subclasses for separators with which tools or detached handle
means may be useful for changing, replacing or gaining access
to filters.
SEE OR SEARCH CLASS:
403, Joints and Connections, appropriate subclasses for a
joint between an implement and a handle therefor.
Subclass:
358
This subclass is indented under the class definition.
Apparatus having means other than mere casing or enclosing
structure for sustaining the separating apparatus against
gravity, such means being adapted to rest upon the ground or
other supporting surface and not including a flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 356+ for other features involving support
means.
subclasses 490+ for combinations involving supporting means
for separating media within or at the extremity of a flow
line.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclasses
301+ for installed vacuum cleaners and see the class
definition of Class 55 for a statement of the line.
Subclass:
359
This subclass is indented under the class definition.
Apparatus having a cover provided with means whereby a
portion of said cover is easily removable, the cover
enclosing, sealing or embracing an apparatus part to render
the part nonusable until the portion is mutilated, torn or
removed.
(1) Note. Packaged or encased apparatus requiring total
removal of an outer covering or enwrapping means, e.g.
removing filter bags from a box or packing container, is not
included.
SEE OR SEARCH CLASS:
206, Special Receptacle or Package, appropriate subclasses
for packaged articles and see (1) Note above.
Subclass:
360
This subclass is indented under the class definition.
Apparatus having electrical energy conductor means arranged
to provide a flow path to discharge an apparatus part or to
prevent accumulation of electrical charges in the apparatus.
Subclass:
361
This subclass is indented under the class definition.
Apparatus having a separating member 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
said member, said member comprised in part or entirely of gas
permeable filter material.
(1) Note. In use position the bag is capable of being
flexed by reason that the material is not rigidly nor
inflexibly supported or sustained against such action as by
being held sandwich style.
SEE OR SEARCH THIS CLASS, SUBCLASS:
341 for multiple bag type separators in a plenum chamber.
Subclass:
362
This subclass is indented under subclass 361. Apparatus with
positive means to remove a separator bag partially or
completely from within a separator housing.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclass 398 for gas
separation apparatus having bag ejecting means responsive to
a sensed condition.
Subclass:
363
This subclass is indented under subclass 361. Apparatus
wherein the separating member in use position forms a tube
axially directed along an arcuate or circular path (e.g.
doughnut-like).
Subclass:
364
This subclass is indented under subclass 361. Apparatus
wherein the separating member is comprised of both gas
permeable and impermeable material, said impermeable material
comprising the major portion of said member.
Subclass:
365
This subclass is indented under subclass 361. Apparatus
having non- filtering means of greater tensile strength than
the filter material of the bag extending substantially the
length of the bag and between means for holding the bag in
operative position.
(1) Note. The strain relief means may be a permanent part
of the bag or a separate member joinable thereto, and is so
related to the bag that any force exerted thereon through the
bag support means is taken by the said strain relief means.
Mere bag structure reinforcing means is excluded and will be
found in subclass 381 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 378+ for bag securing or supporting means.
subclasses 381+ for bag structure, per se, and see (1) Note
above.
Subclass:
366
This subclass is indented under subclass 361. Apparatus
having a gas impermeable receptacle for collecting solids
separated from the gas, said receptacle removably associated
with the separating member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
429 for other separable or removable collecting receptacles
for the heavier constituents.
Subclass:
367
This subclass is indented under subclass 361. Apparatus in
which the separating member or apparatus has means which act
to shut or seal the gas inlet opening of said member, whereby
the member may be removed from the apparatus with the inlet
opening in shut or sealed condition.
(1) Note. The means may be an inherent biasing of the
sealing means to closed position resulting from a
characteristic or property of the material or of its relation
to other parts of the structure.
Subclass:
368
This subclass is indented under subclass 361. Apparatus
having gas flow conducting means defining a confined flow
path within the separating member, or having means associated
with the member which affects the direction or pattern of gas
flow within said member.
Subclass:
369
This subclass is indented under subclass 361. Apparatus in
which a filter member or a nonrigid member enclosing said
filter member has an opening separate and distinct from the
opening attachable to the gas flow conduit, and means for
closing said separate and distinct opening.
Subclass:
370
This subclass is indented under subclass 369. Apparatus
providing an arrangement which permits or effects the removal
of the accumulated separated constituents from the device
while at least a portion of the filter member or enclosure
therefor remains connected to the gas conduit.
Subclass:
371
This subclass is indented under subclass 370. Apparatus
having means which permits the filter member to be
substantially or completely removed from within the confines
of the enclosing means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
362 for means for ejecting a filter bag from within a
housing.
Subclass:
372
This subclass is indented under subclass 361. Apparatus in
which the gas is passed through two or more filters, and in
which less than all of said filters are of the flexible or
collapsible bag type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
334 for a bag type filter and a serially arranged basically
different type separator.
482 for two or more filters, none being of the flexible bag
type.
Subclass:
373
This subclass is indented under subclass 361. Apparatus in
which the filter member in use position is enclosed within a
housing and the means which secures the member in the housing
is an integral part of or depends on a means which provides
admission to the interior of said housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
480 for separate flow line access means for securing filters
of other than the bag type within a flow line.
Subclass:
374
This subclass is indented under subclass 361. Apparatus
having means to connect or join the separating member to a
gas conduit in gas flow relationship.
(1) Note. This and indented subclasses will take a direct
coupler between a bag and flow line, or a modified bag end
means to which a separate flow line coupler is joined,
whether or not the flow line is claimed.
Subclass:
375
This subclass is indented under subclass 374. Apparatus in
which the connecting means comprises a pliable or nonrigid
gas conveying channel.
Subclass:
376
This subclass is indented under subclass 374. Apparatus in
which an essential part of the connecting means is integrally
associated with and modifies the structure of the separating
member.
(1) Note. The means permanently attached to the bag may be
static, such as a ring element permanently attached to a bag
end, or manipulable, such as a jointed or expansible clamping
means permanently attached to a bag end.
Subclass:
377
This subclass is indented under subclass 376. Apparatus in
which the connecting means comprises elastic or other
deformable material that recovers its original shape when
released after being distorted, or is readily capable of
being spread apart or enlarged.
Subclass:
378
This subclass is indented under subclass 361. Apparatus
wherein (1) a means sustains or bears at least a part of the
weight of the separating member against the force of gravity
or prevents at least a portion of said member from
collapsing, or (2) the separating member is structurally
modified to provide a means for connecting the member to a
support.
SEE OR SEARCH THIS CLASS, SUBCLASS:
365 for strain relief type supports.
subclasses 374+ for flow line coupling means which are also
securing or supporting means.
Subclass:
379
This subclass is indented under subclass 378. Apparatus in
which said sustaining or connecting means is located within
the separating member.
Subclass:
380
This subclass is indented under subclass 361. Apparatus
wherein the separating member comprises (1) a plurality of
permeable bags one within the other, in spaced or
face-to-face relationship and in which at least one of said
bags is a filter, or (2) a single filter bag folded or
foldable in such a manner that the lateral wall thereof is
comprised of plural, facially unsecured layers or a chamber
is formed between layers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
382 for a filter bag made of two or more folds or layers
substantially facially secured to each other so as to form a
single separating surface.
Subclass:
381
This subclass is indented under subclass 361. Apparatus
relating to the arrangement or interrelation of the parts or
materials which comprise the permeable separating member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
361 for bag filter material, per se.
subclasses 522+ for separator materials.
Subclass:
382
This subclass is indented under subclass 381. Apparatus in
which at least a portion of the member is comprised of two or
more sheets, or surface extending masses, in face-to-face
relation, or in which the material of the member is comprised
of physically interrelated layers of different
characteristics.
SEE OR SEARCH THIS CLASS, SUBCLASS:
380 for a single filter bag with a wall folded upon itself,
both folds being facially unsecured so as to form plural
separating surfaces, or a chamber therebetween.
Subclass:
383
This subclass is indented under the class definition.
Apparatus having means to effect gas flow through, or
relative to, a separator, said gas passing from the flow
effecting means to the separator, or vice versa, through an
unbounded area.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 437+ and 467+, for gas pumps or fans in a
confined flow path combined with a gas separating media.
Subclass:
385.1
COMBINED OR CONVERTIBLE:
This subclass is indented under the class definition.
Apparatus in combination with features other than flow or
residue conducting or handling structure, media retaining or
access structure, heating or cooling means, or insulation
separating structure and not provided for above; or having
means or parts capable of structural rearrangement or
modification to selectively provide either a separating
organization having some other mode of operation or a device
of some other description.
(1) Note. Examples of patents classified under this
definition include those claiming a separator combined with a
shield to prevent rain from entering the gas inlet, or with a
protective shield to prevent damage to the separator or
casing or with a showcase.
Subclass:
385.2
In environmental air enclosure:
This subclass is indented under subclass 385.1. Apparatus
wherein an enclosure, e.g., clean air room, bomb shelter,
incubator, etc., has means to provide air for a desired
purpose.
Subclass:
385.3
In motor vehicle:
This subclass is indented under subclass 385.1. Apparatus
located within a motor vehicle.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 313
for cleaning apparatus involving air blast or suction means
installed within a motor vehicle.
Subclass:
385.4
In vented container:
This subclass is indented under subclass 385.1. Apparatus
located within a container having a vented opening.
Subclass:
385.5
Involving mining or metallurgical apparatus:
This subclass is indented under subclass 385.1. Apparatus
associated with mining or metallurgical structure.
Subclass:
385.6
Involving communication receiving or transmitting apparatus:
This subclass is indented under subclass 385.1. Apparatus
associated with communication receiving or transmitting
structure.
Subclass:
385.7
Involving shielding apparatus:
This subclass is indented under subclass 385.1. Apparatus
associated with structure having shielding means.
Subclass:
385.8
Involving ash tray:
This subclass is indented under subclass 385.1. Apparatus
associated with an ash tray.
Subclass:
391
This subclass is indented under the class definition.
Apparatus comprising a casing with a collecting zone for a
separated constituent and a gas outlet conduit leading
therefrom, said conduit provided with a radially outwardly
extending guide or shield stopping short of the casing to
form an annular opening between it and the casing wall for
the influent mixture to enter the collecting zone.
Subclass:
392
This subclass is indented under the class definition.
Apparatus comprising a separating chamber including static
means (e.g. skimmer) so positioned therein as to direct the
flow of a layer of one or more of the system fluid
constituents in a stratified gas mixture out of the flowing
gas stream to an escape from the separating zone or to a
collection zone.
(1) Note. The directing means must be more than an aperture
in a deflecting surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
407 for a concentrate flow groove, guide or channel on a
moving member.
Subclass:
392.1
With heating or cooling means:
This subclass is indented under subclass 392. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent.
Subclass:
393
This subclass is indented under subclass 392. Apparatus in
which the directing means is arranged for movement between
fixed positions to vary the effect thereof in use.
SEE OR SEARCH THIS CLASS, SUBCLASS:
422 for adjustably mounted or supported deflectors and see
the search notes thereunder.
Subclass:
394
This subclass is indented under subclass 392. Apparatus in
which the directing means is at or forms the outlet means
through which the heavier constituent layer leaves the
separator chamber.
Subclass:
395
This subclass is indented under subclass 394. Apparatus
comprising a receptacle, removable from the separator, into
which the heavier constituent is discharged.
SEE OR SEARCH THIS CLASS, SUBCLASS:
429 for other separable or removable collecting receptacles
for the heavier constituents.
Subclass:
396
This subclass is indented under subclass 394. Apparatus
wherein the directing means comprises an opening for the
heavier constituents defined between the outflow gas conduit
and a wall surrounding and spaced therefrom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 448+ for annular outlets for the concentrate in
which there is no guide or directing means for the
concentrate.
Subclass:
397
This subclass is indented under subclass 394. Apparatus
comprising one or more openings for the discharge of the
heavier constituents, each opening defined by two walls, one
wall being spaced inwardly from the other and both walls
being intersected by the same diametric axis of the separator
chamber.
Subclass:
398
This subclass is indented under subclass 394. Apparatus
comprising more than one flow directing means for the heavier
constituents, each means being spaced circumferentially
around the axis of the separator chamber.
Subclass:
399
This subclass is indented under subclass 392. Apparatus in
which the directing means is of helical configuration.
Subclass:
400
This subclass is indented under the class definition.
Apparatus wherein the separator includes a continuously
moving unitary member, other than a mere impeller, so
arranged relative to associated structure, or itself so
designed, as to perform a separating function.
(1) Note. To be classified under this definition a
nonfilter member must stratify, deflect, or otherwise
initiate separation of the system fluid constituents by
reason of the member's motion relative thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317 for continuously moving separating means combined with
at least one other separator of a diverse type (e.g.
filter).
351 for continuous or indefinite length separating means
movable during use.
422 for a surface which is removably or adjustably mounted.
subclasses 437+ and 467+, for those separating devices in
which the moving means is nothing more than a fan or pump.
474 for particulate solids movable during use.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclasses 107+ for
processes of gas separation involving a moving solid
sorbent.
96, Gas Separation: Apparatus, subclass 125 and 150 for
solid sorbent apparatus having a moving bed.
Subclass:
401
This subclass is indented under subclass 400. Apparatus
comprising two or more separating means, at least one of
which is continuously moving, each functioning substantially
independently of the other (1) as a separating means for only
a portion of the system fluid or (2) as one of a series of
separation phases wherein each downstream separating means
treats the effluent of the preceding upstream means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 342+ for plural separators of the type
classified in this subclass wherein each is provided with a
discrete and longitudinally confined gas inlet or outlet flow
path.
Subclass:
402
This subclass is indented under subclass 401. Apparatus
wherein at least two of the separator means are of the
continuous motion type, each of the moving means acting on
only a portion of the system fluid and the effective areas
encompassed by said means overlapping one another.
Subclass:
403
This subclass is indented under subclass 401. Apparatus
wherein at least two of the separator means are of the
continuous motion type, the moving separating means being
arranged one downstream of the other in the direction of gas
flow.
Subclass:
404
This subclass is indented under subclass 400. Apparatus
wherein the continuously moving means is so arranged in or in
relation to a flow confining means for the system fluid as to
be actuated by the normal flow of said fluid through the
separator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
298 for a member actuated by gas flow to clean a deflector.
352 for a means actuated by gas flow to advance a continuous
or indefinite length separator e.g. a drum.
Subclass:
405
This subclass is indented under subclass 404. Apparatus
wherein the continuously moving means comprises a member
rotatable about a fixed axis, the direction of system fluid
inflow to said separator member being at right angles to said
axis.
Subclass:
406
This subclass is indented under subclass 400. Apparatus
wherein the continuously moving means intercepts the flow of
system fluid and deflects one or more constituents thereof to
a greater extent than the remainder.
(1) Note. A rotating member which throws the system fluid
outwardly therefrom for separation by impingement of the
heavier constituents on a static surface (slinger) is not
considered to be a differential deflecting means for this
subclass but is considered to be more than just a fan or pump
and is classifiable in any of the other preceding subclasses
of this group.
Subclass:
407
This subclass is indented under subclass 406. Apparatus
wherein the moving means includes one or more grooves, guides
or channels as an integral part thereof by means of which a
flowing concentrate layer of one of the system fluid
constituents is directed to suitable outlet means.
Subclass:
408
This subclass is indented under subclass 406. Apparatus
wherein the continuously moving means comprises a rotating
member at least a portion of which comprises a confined flow
path, coaxial with the axis of rotation, for the separated
gas.
Subclass:
409
This subclass is indented under subclass 408. Apparatus
wherein the outlet flow path comprises a tubular shaft which
rotatably supports the continuously moving separator means.
Subclass:
410
This subclass is indented under the class definition.
Apparatus having means which acts on the gas flow subsequent
to separation to (1) vary the quantity of such gas flow or
(2) spread out, render less turbulent, or disperse such gas
flowing out of the apparatus.
(1) Note. Patents are placed in this and indented
subclasses rather than in subclass 418 and indented
subclasses when the direction of flow is indeterminable or is
of no moment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 418+ for means upstream of the separating media
to control the flow of gas thereto.
Subclass:
410.1
With heating or cooling means:
This subclass is indented under subclass 410. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent.
Subclass:
411
This subclass is indented under subclass 410. Apparatus
comprising a flow confining means for the gas flowing out of
the apparatus, said means arranged for movement relative to
the separator casing.
Subclass:
412
This subclass is indented under subclass 411. Apparatus in
which the flow confining means is arranged for rectilinear
movement along the flow path axis.
Subclass:
413
This subclass is indented under subclass 410. Apparatus
having means to deflect or direct the gas flow subsequent to
separation.
Subclass:
414
This subclass is indented under subclass 413. Apparatus in
which the means is positioned within a flow confining means
for the gas flowing out of the apparatus or spaced therefrom
in the direction of gas flow.
Subclass:
415
This subclass is indented under subclass 414. Apparatus
wherein the deflecting or directing means is arranged for
movement to vary the effect thereof on the gas flow.
Subclass:
416
This subclass is indented under subclass 414. Apparatus
comprising means to reduce or eliminate a whirling, spinning,
or turbulent motion of the outlet gas.
Subclass:
417
This subclass is indented under subclass 410. Apparatus
having a valve to vary gas flow to control the quantity of
separated gas flowing through or out of the apparatus.
Subclass:
418
This subclass is indented under the class definition.
Apparatus having means which acts on the gas flow to the
separator, prior to separation to (1) vary the quantity of
such gas flow or (2) spread out, guide or disperse such gas
flow to the separating means.
(1) Note. Inflow control does not include a mere unmodified
gas inlet or means for imparting a whirling or centrifuging
motion to the gas which is essential to the operation of the
device for the purpose of separating a constituent from the
system mixture.
(2) Note. When the direction of flow is of no moment, see
subclass 410 and the notes thereto.
(3) Note. The guide, distributor or diffuser must be
positioned wholly upstream of the separating means. If any
part thereof is within the separated gas outlet conduit, the
patent will be found in subclass 414.
SEE OR SEARCH THIS CLASS, SUBCLASS:
417 for gas outflow control valves and see (2) Note above.
subclasses 447+ for fixed gas whirlers and see (1) Note
above.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 397+ for gas
separation apparatus with automatic control means for gas or
nongaseous constituent discharge.
Subclass:
418.1
With heating or cooling means or having insulation:
This subclass is indented under subclass 418. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent or having
means to prevent heat exchange between a gaseous fluid
mixture or separated constituent and a surrounding
atmosphere.
Subclass:
419
This subclass is indented under subclass 418. Apparatus in
which the means comprises a plurality of apertures, a
manifold means or flow paths to distribute flow to the
separating means.
(1) Note. Perforated plates, reticulated end members or
foraminous containers are not properly herein classified if
such member or means comprise mere supporting or retaining
means for the filter media.
Subclass:
420
This subclass is indented under subclass 418. Apparatus
comprising a valve of the direct response type, i.e. the
valve moves in one direction in response to change in the
flow or pressure of the incoming gas and resumes its normal,
neutral or biased position when the original flow or pressure
condition is restored.
SEE OR SEARCH CLASS:
137, Fluid Handling, subclasses 511+ for the structure of
the valve, per se.
Subclass:
421
This subclass is indented under the class definition.
Apparatus comprising means to separate a plurality of
different liquids, or a liquid and a solid, one from another,
in order to collect each liquid or solid individually.
(1) Note. A reservoir comprising a plurality of different
outlet openings or conduits so arranged that each of a
plurality of different liquids, or a liquid and a solid, will
be obtained separately at each outlet is included under this
definition.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclasses 149+ and 253 for
processes of gas separation involving separation of two or
more liquids from each other.
96, Gas Separation: Apparatus, subclasses 182+ for
degasifying means for liquid with a separator for multiple
liquids.
137, Fluid Handling, subclasses 171+ for fluid separating
traps or vents having separate outflows for diverse liquids
or solids, but not combined with a gas separating structure.
209, Classifying, Separating, and Assorting Solids, for gas
separation devices combined with means to separately guide or
collect each of a plurality of diverse solids (e.g., means to
separately collect fine and coarse solid materials).
210, Liquid Purification or Separation, appropriate
subclasses for separation of liquids in general.
261, Gas and Liquid Contact Apparatus, subclasses 2+ for
gas and liquid contact apparatus involving separating means
for two or more liquids.
Subclass:
422
This subclass is indented under the class definition.
Apparatus wherein the separating media is mounted for
movement to various operative positions or to a position of
nonuse with respect to the gas mixture acted upon while
attached to the separating apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
306 for movably mounted separators of the aircraft
anti-ingestion type.
328 for movably mounted separators which comprise at least
one of the separating elements in a plurality of diverse
separators.
393 for adjustably mounted flowing concentrate layer guide
means.
Subclass:
423
This subclass is indented under the class definition.
Apparatus comprising a separating chamber including therein a
means within the system fluid gas stream, other than the
separating media, for channeling the flow of a separated
constituent out of the separation zone to a concentrate
collection zone within the separator.
Subclass:
424
This subclass is indented under the class definition.
Apparatus comprising means associated with a gas separating
device for averting (1) remixing of a system fluid
constituent, after substantial separation, with the clean
outflow gas or (2) the flowing of a separated system fluid
constituent toward the gas outflow path.
Subclass:
425
This subclass is indented under subclass 424. Apparatus
having means which in at least one position of use completely
shuts off the interflow of gases or concentrate between the
separator and a concentrate collector means.
Subclass:
426
This subclass is indented under subclass 424. Apparatus in
which the means comprises a guide or shield (e.g. plate,
deflector) positioned in the path the separated constituent,
after collection, would tend to follow towards the gas
outflow conduit.
(1) Note. The guide or shield might function in one of two
ways: (1) deflect the heavier constituents away from the gas
outflow conduit, or (2) restrict the suction effect of the
exit gas on the separated constituents in the collector
zone.
Subclass:
427
This subclass is indented under subclass 426. Apparatus in
which the guide or shield is mounted on means which allows it
to be selectively positioned relative to the gas outlet or
concentrate collector zone.
Subclass:
428
This subclass is indented under the class definition.
Apparatus having means associated with a gas separating
device for manipulating, transporting, or providing access to
a collected mass of nongaseous residue or concentrate
comprising (1) affirmative means to transport or carry away
the separated material, (2) means (e.g. a valve) which
selectively retains the separated material within an
apparatus part or permits the material to escape from said
part, (3) removable receptacles for nongaseous material, or
(4) movable means (e.g. hinged doors) for permitting
admission to the interior of nongaseous material
receptacles.
(1) Note. Concentrate collection receptacles or retainers
provided with gas escape means and which serve to permit
concentrate to be in part air borne to the said receptacle
and therefore may act as a secondary separator are not
considered as separators for classification with serially
arranged separators or with diverse separators for subclass
428 or subclasses 342+, respectively but as proper subject
matter under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 282+ for means for removing separated
constituent from the interstices or surfaces of a separator.
466 for means conducting or conditioning a flowing mass of
separated materials, said materials having continuous flow
and at no stage being collected as a mass or transported by
affirmative means.
Subclass:
428.1
With heating or cooling means:
This subclass is indented under subclass 428. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent.
Subclass:
429
This subclass is indented under subclass 428. Apparatus
comprising a receptacle or storage bin for the heavier
separated constituent arranged to be removed from its normal
collecting position relative to the separator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
366 for separable residue containers combined with flexible
or collapsible bag type separators.
395 for other removable collection receptacles combined with
a separator having a guide means for the heavier constituents
at the escape opening.
Subclass:
430
This subclass is indented under subclass 428. Apparatus
comprising a means which positively effects or aids removal
of the collected residue rather than merely permitting such
removal.
Subclass:
431
This subclass is indented under subclass 430. Apparatus in
which the means is a fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 282+ for cleaning a separating media with a
nonliquid.
466 for treating the residue with a liquid.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 228+ for gas
separation apparatus with means using liquid to clean the
separating apparatus.
Subclass:
432
This subclass is indented under subclass 428. Apparatus
comprising a separated material receiver having means which
in one position retains the separated materials therein and
in an alternate position allows the materials to issue
therefrom (e.g. valved residue outlet).
Subclass:
433
This subclass is indented under subclass 432. Apparatus in
which the means is placed in and out of the position by a
motion transmitted by an attendant's hand or foot.
Subclass:
434
This subclass is indented under the class definition.
Apparatus 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
(1) drop out and remain behind, while the lighter constituent
(e.g. clean gas) flows on, or (2) move to the outer periphery
of a rotating gas stream in a concentrated layer to permit
such layer to be separated from the mass of lighter
constituent.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclasses 267+ for
processes of gas separation by deflection.
406, Conveyors: Fluid Current, subclasses 157+ and 168+
for fluid current conveyors having a material separating
deflector at the conveyor outlet.
Subclass:
434.1
Having insulation:
This subclass is indented under subclass 434. Apparatus
provided with means to prevent heat exchange between a
gaseous fluid mixture or separated constituent and a
surrounding atmosphere.
Subclass:
434.2
With heating or cooling means:
This subclass is indented under subclass 434. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent.
Subclass:
434.3
Two confined fluids in indirect contact:
This subclass is indented under subclass 434.2. Apparatus
provided with a conduit or flow conductor for passing a
nonsystem fluid proximate to but not in direct contact with
at least a portion of a bounded gaseous fluid mixture or
separated constituent to effect heat exchange therebetween,
the nonsystem fluid being separate and distinct from the
bounded gaseous fluid mixture or separated constituent.
Subclass:
434.4
Heat exchanger is part of separator or is contiguous
therewith:
This subclass is indented under subclass 434.3. Apparatus in
which the nonsystem fluid conduit or conductor is
structurally associated with the confined gaseous fluid
mixture or separated constituent at or proximate to the locus
of separation so that the temperature of the confined gaseous
fluid mixture or separated constituent is affected at the
separator.
Subclass:
435
This subclass is indented under subclass 434. Apparatus
having (1) means in addition to casing walls or mere
separating means flow passages especially designed to reduce
or prevent erosion or abrading of apparatus parts or (2)
separating surfaces of peculiar composition or especially
treated as by alloying, coating or hardening to withstand
rapid deterioration of such surfaces.
Subclass:
436
This subclass is indented under subclass 434. Apparatus
wherein the deflector surface may be readily withdrawn or
detached from its support, the connecting or supporting
elements, if any, being reusable.
Subclass:
437
This subclass is indented under subclass 434. Apparatus
including a means which effects flow of the gas being
separated to and through the separator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
383 for other gas pumps or fans wherein there is no confined
flow between the impeller and the separator.
subclasses 467+ for other gas pumps or fans in an apparatus
for gas separation.
Subclass:
438
This subclass is indented under subclass 437. Apparatus
wherein the means is positioned within the confines of the
casing enclosing the separating media.
Subclass:
439
This subclass is indented under subclass 437. Apparatus in
which the means is positioned on the gas egress side of the
separating media.
Subclass:
440
This subclass is indented under subclass 434. Apparatus in
which the surface 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.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 392+ for gas
separation apparatus comprised of closely spaced parallel
plates that do not rely upon change of direction of the gas
flow for separation.
Subclass:
441
This subclass is indented under subclass 434. Apparatus
comprising a plurality of coaxial tubular members having
different diameters, each surrounding the next smaller, each
coaxial tube having a closed end and an open end, and each
except the smallest having one closed end across and spaced
from the open end of the surrounded tube.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclass 191 for similar
conduits used for eliminating moisture particles from a gas
evolved in an apparatus for degassing a liquid.
Subclass:
442
This subclass is indented under subclass 434. Apparatus
comprising a plurality of said surfaces, at least a portion
of each surface being superposed with respect to the next
adjacent in the direction of gas flow.
Subclass:
443
This subclass is indented under subclass 442. Apparatus
comprising a plurality of surfaces spaced from one another in
a general linear disposition and in a direction substantially
normal to the gas flow path.
Subclass:
444
This subclass is indented under subclass 443. Apparatus
comprising at least three linear arrangements normal to the
gas flow in which the corresponding surfaces in the first and
third arrangements are in a straight line with each other but
laterally displaced from the corresponding surfaces in the
second or intervening arrangement.
Subclass:
445
This subclass is indented under subclass 442. Apparatus in
which the surfaces are either (1) provided with openings for
permitting gas flow therethrough or (2) arranged within the
flow path to provide a small space for gas flow between edges
of said surfaces and the flow path conduit wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 307+ for a unit comprising a filter or an
apertured deflector, which unit is spaced inwardly from the
flow path wall.
Subclass:
446
This subclass is indented under subclass 445. Apparatus in
which the openings or spaces are complemented by an
imperforate portion of the next adjacent surface in the
direction of gas flow.
Subclass:
447
This subclass is indented under subclass 434. Apparatus in
which the direction of gas flow is changed by a static member
designed to cause the gas to rotate or spin around an axis.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 301+ for a fixed
gas whirler or rotator for gas separation combined with gas
and liquid contact means.
406, Conveyors: Fluid Current, subclass 173 for a fluid
current conveyor having a cyclone separator at the outlet.
Subclass:
448
This subclass is indented under subclass 447. Apparatus
including an outlet gas flow conduit wall defining (1) a
space between it and a surrounding, radially spaced wall for
the concentrated nongaseous material to leave the separator,
(2) one wall of a closed end, surrounding concentric chamber
for collecting the concentrated nongaseous material, or (3) a
space between it and another surrounding, radially spaced
wall for gas in flow to the separating chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
396 for similar annular outlet means, but having a guide
means for the concentrate layer.
Subclass:
449
This subclass is indented under subclass 448. Apparatus
wherein the gas outlet wall comprises the inner wall of the
surrounding gas inlet.
Subclass:
450
This subclass is indented under subclass 448. Apparatus
including a residue discharge opening from the collection
chamber.
Subclass:
451
This subclass is indented under subclass 450. Apparatus
wherein the discharge opening comprises a conductor which
discharges the residue in a path other than one which, if
extended as a straight line at the chamber wall, would
intersect or be parallel to the longitudinal axis of the
chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
454 for a tangential outlet pipe from a whirler means.
Subclass:
452
This subclass is indented under subclass 447. Apparatus
provided with a bounding wall extending along the axis of
rotation, having a radius of curvature, and more than one
opening through which the concentrate escapes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
398 for similar structure having means to guide the
concentrate through the openings.
Subclass:
453
This subclass is indented under subclass 447. Apparatus
comprising parallel end members supporting between them vanes
directed obliquely to a common axis to direct the inflow
angularly with respect to the axis, at least one of the end
members provided with one or more openings for the escape of
the rotating concentrate layer.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for other similar structures for causing gas whirl.
Subclass:
454
This subclass is indented under subclass 447. Apparatus
comprising an outlet pipe for the heavier constituents
arranged to discharge the heavier constituents in a path
other than one which, if extended as a straight line at the
wall of the whirling chamber, would intersect or be parallel
to the axis of the chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
451 for a tangential outlet pipe for heavier constituents
from a collector surrounding a gas inlet pipe.
Subclass:
455
This subclass is indented under subclass 447. Apparatus
comprising a perimetric wall having multiple inlet means for
the gas, each means directed obliquely to a common axis to
direct the gas flow angularly with respect to the axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
453 for similar gas whirling structure provided with outlet
openings for the concentrate layer.
Subclass:
456
This subclass is indented under subclass 447. Apparatus
wherein said member is situated within a gas flow passage and
is twisted or turned about its axis.
Subclass:
457
This subclass is indented under subclass 456. Apparatus
comprising a solid or hollow element positioned interiorly of
a portion of the gas flow passage to provide for gas flow in
the space between it and the wall of the gas passage, with
the twisted member positioned in the space.
Subclass:
458
This subclass is indented under subclass 447. Apparatus
wherein an inlet gas conduit extends into a separator casing
and is arranged, formed, or has openings to cause the ensuing
gas to assume a curved path.
Subclass:
459.1
Tangential gas inlet opening in casing:
This subclass is indented under subclass 447. Apparatus
wherein the gas whirling means comprises a separator casing
having an inflow gas conductor which directs the gas into
said casing in a path other than one which intersects or is
parallel to the longitudinal axis of the casing.
Subclass:
459.2
Inclined inflow:
This subclass is indented under subclass 459.1. Apparatus
wherein the gas inflow conductor is sloped.
Subclass:
459.3
Scroll:
This subclass is indented under subclass 459.1. Apparatus
wherein the gas inflow conductor is a scroll means.
Subclass:
459.4
Inflow nozzle or vane:
This subclass is indented under subclass 459.1. Apparatus
wherein the gas inflow conductor is a nozzler or vane
structure.
Subclass:
459.5
Varying inlet area:
This subclass is indented under subclass 459.1. Apparatus
wherein the area of the gas inflow changes.
Subclass:
460
This subclass is indented under subclass 459.1. Apparatus
having, in addition, a gas outlet flow conduit which conducts
the gas out of the separator casing in a path other than one
which, if extended as a straight line at the casing wall,
would intersect or be parallel to the longitudinal axis of
the casing.
Subclass:
461
This subclass is indented under subclass 447. Apparatus
comprising a conduit or other gas conducting member,
imperforate except for means provided for gas inlet, gas
outlet and concentrate outlet, and designed to separate while
conveying the gas to be treated in a curved path.
Subclass:
462
This subclass is indented under subclass 434. Apparatus
comprising a surface in the flow path of the gas stream to be
contacted by the stream for redirecting or altering the flow
path for separation of nongaseous constituents therefrom.
Subclass:
463
This subclass is indented under subclass 462. Apparatus in
which the surface has circular cross sections of increasing
diameter with the smallest diameter section facing upstream.
Subclass:
464
This subclass is indented under subclass 462. Apparatus
wherein the surface has bends, folds, projections or ridges
and the like irregularities.
Subclass:
465
This subclass is indented under subclass 462. Apparatus in
which the surface is flat.
Subclass:
466
This subclass is indented under the class definition.
Apparatus comprising (1) residue or concentrate flow guide
means which permits a continuous flow of separated materials
to leave the apparatus or (2) means for changing the physical
properties (e.g. temperature, density, viscosity, etc.) of
the separated materials for affecting the flow
characteristics of said materials.
(1) Note. This subclass is intended to provide a locus of
search for modified outlets (i.e. not mere openings) and
accordingly, all patents disclosing significant outlet
structure should be cross-referenced hereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 282+ for means for removing separated
constituent from the interstices or surfaces of a separator.
subclasses 428+ for affirmative or permissive means for
removing collected separated materials from a gas separating
device.
Subclass:
467
This subclass is indented under the class definition.
Apparatus having means to positively force system fluid gas
through, or to pass relative to, a separating media.
SEE OR SEARCH THIS CLASS, SUBCLASS:
383 for gas pumps or fans to force gas in an unbounded area
to move relative to a separating media.
subclasses 437+ for gas pumps or fans in a confined flow
path combined with a separating media of the deflector type.
Subclass:
467.1
With heating or cooling means:
This subclass is indented under subclass 467. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent.
Subclass:
468
This subclass is indented under subclass 467. Apparatus in
which flow effecting means is provided for the system fluid
gas by an independent flow of motive fluid so related to the
flow path for said gas as to induce flow thereof by venturi
effect or the like.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 400+ for separators mounted for continuous
motion to effect separation.
subclasses 437+ for deflector related gas pumps or fans.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 372+ for gas
separation apparatus including inlet means for diverse gas or
solid for gas treatment in which the diverse gas for
treatment of the gaseous fluid mixture or a separated
constituent may also be a motive fluid for the apparatus.
Subclass:
469
This subclass is indented under subclass 467. Apparatus in
which the gas is forced to pass through, or relative to the
separating media by hand or foot actuated means, by
mechanically actuated means having contact with a surface
along which it moves, or by a weight motor means.
Subclass:
470
This subclass is indented under subclass 467. Apparatus
having a plurality of separate and distinct impelling means,
each impelling means acting only on a portion of the total
gas flow, or at least one impelling means serving a purpose
other than merely forcing the gas to or from the separating
media.
(1) Note. An arrangement of two impelling means, one of
which forces system fluid to the motor of the other impelling
means for cooling thereof is an example of a diverse function
and is proper subject matter under this definition.
Subclass:
471
This subclass is indented under subclass 467. Apparatus in
which the impelling means is wholly or partially within the
space defined by a nonplanar separating media or is so close
to said space that a definite flow line cannot be
distinguished between the impeller and the media.
Subclass:
472
This subclass is indented under subclass 467. Apparatus
having (1) a pump, motor, and gas separating means arranged
one above the other, in any order, within an upstanding
casing in its normal operative position, or (2) a plurality
of chambers having a confined flow path therebetween, and in
which at least one material flow effecting means and the gas
separating means are in different chambers.
(1) Note. This is the locus for apparatus of the vertical
type in which stability, compactness, maneuverability, access
to the filter compartment, etc., is of importance.
Subclass:
473
This subclass is indented under subclass 467. Apparatus in
which the forcing means is located ahead of the separating
media, or of at least one of a plurality of serially arranged
separating media, in relation to the direction of gas flow.
Subclass:
474
This subclass is indented under the class definition.
Apparatus comprising a separating media of individual
portions or bits of solid matter and further provided with
means (1) for mixing or causing relative motion among the
particles or (2) for rendering the media in a flowing state
during use.
SEE OR SEARCH THIS CLASS, SUBCLASS:
390 for solid sorbent separating media which are moved
during use.
subclasses 400+ for apparatus mounted or supported for
continuous motion effective to separate gasiform fluid and
see the collected search notes thereunder for other moving
separating media.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclass 275 for processes
for gas separation using a moving bed of particulate solids.
Subclass:
475
This subclass is indented under the class definition.
Apparatus having means in addition to mere flow coupling
joints, resilient retainers or biasing means to selectively
or cyclically cause exertion of different compacting forces
on the media.
Subclass:
476
This subclass is indented under the class definition.
Apparatus having flow inlet means which is substantially
surrounded, (i.e. embraced) by the separating media except
where the said flow inlet means enters the outer confines of
the media securing or retaining means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 418+ for inflow control or distribution means
having additional characteristics going beyond a mere inlet
flow pipe.
subclasses 484+ for spaced filter means, e.g., upper and
lower shelf or grid supported material with gas inlet means
in the space between shelves or compartments.
Subclass:
477
This subclass is indented under the class definition.
Apparatus in which a filter media through which the gas is
constrained to pass comprises bristle like or strand like
members held so that at least one extremity of each such
member is not secured to a holder or support, e.g., a knot or
tuft held by a ferrule.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329 for a brush type filter combined with a serially
arranged basically different separator.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 390+ for shelf
or edge type filter and see (1) Note to that subclass.
Subclass:
478
This subclass is indented under the class definition.
Apparatus having (1) means apart from the flow line walls or
(2) modifications, (e.g. openings) in the flow line walls
which permit (a) admittance thereto, or (b) filter material
or unit replacement without recourse to a separation of the
flow line in the direction of normal gas flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 369+ for closure means other than a coupler to a
flow line for a filter bag or cover therefor.
Subclass:
479
This subclass is indented under subclass 478. Apparatus for
filter material of the particulate type.
(1) Note. Discrete filter particles form a flowable mass,
the particles of which are not positively connected one to
the other, as opposed to entangled material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
474 for particulate solids having movement during use.
subclasses 512+ for means securing or retaining discrete
massed or particulate materials, and see (1) Note above.
Subclass:
480
This subclass is indented under subclass 478. Apparatus in
which the means for gaining admittance to the flow path is
also the means which supports or joins the filter unit in or
to the flow path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 369+ and 373, for similar subject matter
pertaining to flexible or collapsible bag type separators.
Subclass:
481
This subclass is indented under subclass 478. Apparatus in
which the flow line is provided with an opening and
associated guide way or tracks thereat such that the unit is
removed or replaced by a sliding motion through the said
opening in a direction across the flow path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
506 for a flange or track on a flow line end for slidably
coupling a filter thereto.
Subclass:
482
This subclass is indented under the class definition.
Apparatus comprising two or more operatively distinct
filtering media in spaced or edge-to-edge relation, or
comprised of two or more plies, at least two of said plies
being functionally distinct.
(1) Note. Operatively distinct separating means under this
definition includes a separator comprised of one continuous
separating surface supported in such a manner as to form two
or more spaced surfaces through which the gas flows, either
in series or in parallel.
(2) Note. Although the title and definition are broad it is
not intended that deflectors be cross referenced to this
group of subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 342+ for multiple separators each with discrete
and longitudinally confined gas inlet or outlet flow path.
Subclass:
482.1
With heating or cooling means:
This subclass is indented under subclass 482. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent.
Subclass:
483
This subclass is indented under subclass 482. Apparatus
having supporting or retaining means effective to maintain
two or more media in end to end contiguous relation such that
the region of greatest area or extent of the media is
facially presented to the gasiform fluid.
Subclass:
484
This subclass is indented under subclass 482. Apparatus in
which the plurality of media are spaced across a flow stream
so that each acts independently of the other upon only a
portion of the gas stream so that the several media act
substantially upon the gas at one time.
(1) Note. A single sheet type or running length separating
media which is supported in such a manner as to result in a
divided gas flow therethrough by virtue of the support means
blocking gas flow is not proper subject matter under this
definition, but is classified in subclass 500.
Subclass:
485
This subclass is indented under subclass 482. Apparatus
comprising at least three media spaced from each other so
that the gas passes through each in turn.
Subclass:
486
This subclass is indented under subclass 482. Apparatus in
which the media comprises facially contiguous elements or
members of unlike material, mesh, screen and the like
characteristics to define thereby functionally distinct
members, or comprises like material differently oriented.
SEE OR SEARCH THIS CLASS, SUBCLASS:
522 for media comprised of facially contiguous elements of
like characteristics and orientation.
Subclass:
487
This subclass is indented under subclass 486. Apparatus in
which the unlike characteristics relates to the size of flow
passages in the members.
Subclass:
488
This subclass is indented under subclass 486. Apparatus in
which the unlike characteristic pertains to the
configuration, outline or dimension of the members.
Subclass:
489
This subclass is indented under subclass 486. Apparatus in
which contiguous similar members are placed one with respect
to the other so that one said member is turned about some
axis or shifted relative to the other to thereby (1) define a
different flow relation to the said other, or (2) together
define a modified or a different separating media.
Subclass:
490
This subclass is indented under the class definition.
Apparatus comprising (1) a media placed in a flow line by
being previously distorted out of its normal or natural shape
or size and retained within the flow line by its contact with
the wall thereof and its tendency to regain its normal shape
or (2) means distinct from the media itself to maintain or
contain said media in a stable or sustained altitude either
in or out of a flow line as by binding, framing, stitching,
to support the media against gravity as to maintain it as a
cohesive entity by means not including bonding of the media
upon itself.
(1) Note. Arrangements of deflectors should not be crossed
referenced to this subclass nor to subclasses below this
point in the schedule.
Subclass:
490.1
With heating or cooling means:
This subclass is indented under subclass 490. Apparatus
having means for raising or lowering the temperature of a
gaseous fluid mixture or separated constituent.
Subclass:
490.2
Two confined fluids in indirect contact:
This subclass is indented under subclass 490.1. Apparatus
provided with a conduit or flow conductor for passing a
nonsystem fluid proximate to but not in direct contact with
at least a portion of a bounded gaseous fluid mixture or
separated constituent to effect heat exchange therebetween,
the nonsystem fluid being separate and distinct from the
bounded gaseous fluid mixture or separated constituent.
Subclass:
491
This subclass is indented under subclass 490. Apparatus
wherein the filter media is secured or attached to its
retainer, frame, flow line or the like by a joining means or
part which penetrates or pierces the media by a sharp or
impaling means, or makes its own way through the media.
Subclass:
492
This subclass is indented under subclass 490. Apparatus in
which the media is maintained or secured by imbedding a
holding or reinforcing means within the media so that the
imbedded means is substantially surrounded by the media.
SEE OR SEARCH THIS CLASS, SUBCLASS:
379 for collapsible filter bag securing or supporting means
internally of the bag.
Subclass:
493
This subclass is indented under subclass 490. Apparatus in
which the flow line itself or a means fixed (1) within a flow
line, or (2) to a frame or support means for the filter, has
a hinged or pivoted connection therebetween and some other
part of the flow line, backing member or frame for retaining
or securing the media.
SEE OR SEARCH THIS CLASS, SUBCLASS:
422 for similarly supported media non- detachably adjustable
to various positions of use or to nonuse with respect to the
gas mixture acted upon.
Subclass:
494
This subclass is indented under subclass 490. Apparatus in
which the supporting means comprises either a slatted
framework or a solid member with very shallow vertical walls
upon which the media rests, without any further support or
retaining means being disclosed in contact with the media.
(1) Note. Most of the patents in this subclass relate to
powered or pulverulent material, such as lime, supported on a
grid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
515 for a filter in a foraminous container.
subclasses 516+ for particulate separating media held
between open work members.
SEE OR SEARCH CLASS:
248, Supports, subclass 346.01 for grids or supports, per
se, which may be disclosed for maintaining a powered or
pulverulent gas separating media.
Subclass:
495
This subclass is indented under subclass 490. Apparatus
comprising a separating media which is either of
self-sustaining form, encased or form maintained, or of
coherent sheet form (not loose and particulate), said
separating media being either retained in a flow line or
retained in a peripheral support.
(1) Note. A unit is considered to be any media of rigid
form maintaining configuration which maintains its rigidity
without a frame, or because of a frame. A media of cohesive
sheet-like material is one that is flexible rather than self
supporting and is unitary in the sense that it is coherent
and has tensile strength. (Sheet-like as contrasted with a
pad or mass of fibres and cohesive as contrasted with loose
material).
Subclass:
496
This subclass is indented under subclass 495. Apparatus
having means whereby (1) the retaining or securing means
admits of adjustment to accommodate different sizes of media
or different use positions either to satisfy the unit
assembly or the flow line relation, or (2) the overall unit
size may be changed by reason of a modified frame arrangement
or the like.
SEE OR SEARCH THIS CLASS, SUBCLASS:
422 for separation media adjustable to various positions of
use or nonuse without separation from the flow line.
475 for means adjustable to control compactness of filter
material.
Subclass:
497
This subclass is indented under subclass 495. Apparatus
comprising means engaging the sheet form filter substantially
at the running edge to maintain the said sheet in other than
planar configuration or to support the nonplanar sheet in a
flow line, any facial engagement being proximate the said
edge.
Subclass:
498
This subclass is indented under subclass 497. Apparatus in
which the resulting shape of the media takes the form of a
cylinder or spiral.
Subclass:
499
This subclass is indented under subclass 497. Apparatus
provided with one or more members which are in facial contact
with the sheet media and thus serve as upstream, or
downstream supports regarding the flow of gas.
Subclass:
500
This subclass is indented under subclass 495. Apparatus
having means to retain cohesive sheet-like material in a
nonplanar configuration either in a frame or in a flow line.
Subclass:
501
This subclass is indented under subclass 495. Apparatus
having an auxiliary supporting or retaining means for the
media which is (1) positioned within the frame and removable
therefrom or (2) adjacent the media in the flow line and not
directly secured thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 516+ for massed or particulate material held
between open work.
Subclass:
502
This subclass is indented under subclass 495. Apparatus
having a packing or pliant material used in the joining or
coupling of the media to the frame or flow line or in
maintaining the unit in a flow line to effect a gas-tight or
cushioned seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
507 and 509, for resilient means securing or attaching the
media in use position.
Subclass:
503
This subclass is indented under subclass 495. Apparatus in
which the media or unit is maintained in a flow line which is
provided with features of separability for ready access to
the media upon separating the flow line sections.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 478+ for access means off-set to the gas flow
path and not a part thereof requiring separability of the
flow line sections.
Subclass:
504
This subclass is indented under subclass 495. Apparatus
having means for joining a filter unit to a flow line or to
the framework defining the extremity of a flow conductor and
comprising a stop or flange against which the unit is abutted
and a removable or movable clamping means which engages the
unit to hold the said unit against the stop or flange, the
stop, filter and clamp being aligned in the general direction
of air flow through the said flow line or framework.
Subclass:
505
This subclass is indented under subclass 495. Apparatus in
which the media is attached or secured to a flow line ingress
or egress means from without the flow line such that the said
media is outside of or substantially at an upstream or
downstream boundary of the flow conduit.
Subclass:
506
This subclass is indented under subclass 505. Apparatus
having a track, groove or flange-like means as part of the
conduit in which the media is slidably engaged or retained.
Subclass:
507
This subclass is indented under subclass 505. Apparatus in
which the securing means has elastic properties or is not
readily permanently deformed under normal use.
SEE OR SEARCH THIS CLASS, SUBCLASS:
377 for a bag type filter having a flow line coupling with a
resilient part.
Subclass:
508
This subclass is indented under subclass 495. Apparatus in
which the means supporting or securing the media in or to the
flow line is either in tension or shear.
(1) Note. The total disclosed support must not include a
support portion extending vertically between the media and a
conduit, apparatus part or the ground beneath the media.
SEE OR SEARCH THIS CLASS, SUBCLASS:
373 for filter bags suspended from a housing closure.
Subclass:
509
This subclass is indented under subclass 495. Apparatus in
which the securing means has elastic properties under normal
use or wherein the unit is held in place by its inherent
resilience.
Subclass:
510
This subclass is indented under subclass 495. Apparatus in
which a filter unit of annular form, e.g., a hollow cylinder
or doughnut, is held between a pair of substantially solid
members applied axially (i.e., across the open ends) of the
unit whereby gas flow is through the filter and through an
opening in at least one of said members.
Subclass:
511
This subclass is indented under subclass 495. Apparatus in
which the securing or retaining means is disclosed as
engaging the media along or substantially proximate the
peripheral edge only, the remaining portions thereof being
unsupported.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 497+ for nonplanar sheet form media, edge
supported.
Subclass:
512
This subclass is indented under subclass 490. Apparatus for
containing, securing in a flow line, or maintaining as a
cohesive mass a filter media comprised of numerous individual
entangled or unconnected elements.
(1) Note. For apparatus for positioning a filter unit, the
filter media, per se, being comprised of entangled or
unconnected elements, in a flow line see subclass 495 and (1)
Note thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
478 for a filter of discrete particles in a flow line with
separate access means to the flow line or with passage means
for the filter media off-set to the gas flow path.
SEE OR SEARCH CLASS:
95, Gas Separation: Processes, subclasses 274+ for
processes of gas separation by filtering through a mass of
particulate solids.
Subclass:
513
This subclass is indented under subclass 512. Apparatus in
which at least some portion of the filter media retaining
means has elastic properties.
SEE OR SEARCH THIS CLASS, SUBCLASS:
377 for a bag type filter having a flow line coupling with a
resilient part.
507 for a filter unit maintained at the end of a flow line
by a resilient attaching means.
Subclass:
514
This subclass is indented under subclass 512. Apparatus
wherein the media is joined to a securing, sustaining, or
handling means by heat or by adhesion.
SEE OR SEARCH CLASS:
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
appropriate subclasses for adhesively bonding particulate
material to a backing member.
Subclass:
515
This subclass is indented under subclass 512. Apparatus in
which the containing, securing or maintaining means comprises
a receptacle, all faces or surfaces of which are porous or
skeletal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 516+ for a filter media held between open work.
Subclass:
516
This subclass is indented under subclass 512. Apparatus
comprising at least two members which serve to confine or
retain the filter media therebetween said members permitting
gas to flow therethrough.
(1) Note. A "member" under this definition may be no more
than a series of parallel wires.
SEE OR SEARCH THIS CLASS, SUBCLASS:
494 for a grid for bottom support only of a separating
media.
515 for a foraminous receptacle for holding a particulate or
fibrous massed filter media.
Subclass:
517
This subclass is indented under subclass 516. Apparatus in
which the confining or retaining means is comprised of two
members, one member partially or completely within the other
member, or at least one member being of irregular or curved
configuration.
Subclass:
518
This subclass is indented under subclass 516. Apparatus in
which the filter media is retained between continuous
surfaces, each having at least one aperture formed
therethrough.
Subclass:
519
This subclass is indented under subclass 516. Apparatus in
which the filter media is retained between at least two
retainers each comprised of intersecting elongated elements
arranged to form at least one opening, or interstice, bounded
on all sides by said elongated elements.
Subclass:
520
This subclass is indented under the class definition.
Apparatus comprising a filter element which is rolled or
wound either in face-to-face or spaced relation to form one
or more spiral convolutions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
498 for filter sheet(s) edge supported in spiral form and
subclass 484 for a spiral arrangement of spaced convolutions
providing parallel flow for gas.
527 for a strand which is indiscriminately wound around
itself, but not in a spiral.
Subclass:
-2
521.
This subclass is indented under the class definition.
Apparatus of cohesive filter material maintained in a
configuration imposed upon it either by bonding upon itself
or impregnants, or by inherent characteristic, the
configuration taking a zigzag, corrugated or conical form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
497 and 500, for cohesive sheet-like media in a flow line or
frame and in zigzag form.
Subclass:
522
This subclass is indented under the class definition.
Apparatus in which (1) the stock, fiber, metal, weave, fabric
or a modification thereof or (2) an added ingredient to bond,
coat or impregnate stock material is specifically recited in
a claim.
(1) Note. Special shapes or arrangements of filter material,
or filter media retained or secured by means other than by
bonding upon itself, are provided for elsewhere. in the
subclasses beginning with subclass 474, or in subclass 529.
(2) Note. Under this definition, naming "Monel metal" or
"copper", for example in a claim is a specific recitation of
stock, "metal" or "fabric" is not a specific recitation.A
named coating, for example, "tricresyl phosphate" is
specific; a "viscous" coating is not.
SEE OR SEARCH THIS CLASS, SUBCLASS:
435 for deflectors with anti-erosion means.
474 and subclasses below or subclass 529 for special shapes
or arrangements of filter material, or filter media retained
or secured by means other than by bonding upon itself, are
provided for elsewhere.
SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Articles, subclasses 98+
and 221+ for a stock material product in the form of a
single or plural layer web or sheet and having some defined
structured (e.g., aperture, nonplanar arrangement, specific
size of fibers or particles).
Subclass:
523
This subclass is indented under subclass 522. Apparatus in
which the media is a porous body made of a fired earth or by
heating a powdered metal to form a coherent mass without
thoroughly melting.
Subclass:
524
This subclass is indented under subclass 522. Apparatus
provided with (1) a material, fluid or discrete, which
penetrates the separating media and is retained therein or
thereon, either in its original form or physically combined
therewith, or (2) an initially fluent film or layer of
material either lying on or adhered to the surface of the
separating media or by which component parts of a media are
secured one to the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
514 and 521, for filter media and bonding agents there
classified.
SEE OR SEARCH CLASS:
131, Tobacco, subclass 343 for a smoke separator comprising
plural diverse elements one of which is a plasticizer,
adhesive, coating or impregnant, the separator disclosed for
use in a tobacco user's appliance or article.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
appropriate subclasses, for adhesive bonding and
miscellaneous chemical manufactures of sheet material.
424, Drug, Bio-Affecting and Body Treating Compositions, for
an antiseptic or disinfecting composition which may be used
for coating a filter.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses, for a single or plural layer stock material
product provided for in that class.
Subclass:
525
This subclass is indented under subclass 522. Apparatus in
which the media is comprised of (1) a woven, substantially
regularly looped or linked metal of strand or ribbon form or
(2) sheet material which has been more or less regularly
provided with discontinuous slits or cuts and thereafter
subjected to tension forces to open up the slits or cuts.
SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Articles, subclass 131
for a single or plural layer stock material product embodying
an apertured component and subclasses 175+, 190, 193, and
196+ for such a product having a component embodying
mechanically interengaged strands or strand-portions,
subclass 596 for metallic stock which is apertured, and
subclass 613 for such stock or article which is porous.
442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth,
etc.), subclasses 181+ and 304+ for a woven or knit
fabric.
Subclass:
526
This subclass is indented under subclass 525. Apparatus in
which the mesh or expanded sheet has been gathered or pressed
together to a more compact and solid form.
Subclass:
527
This subclass is indented under subclass 522. Apparatus in
which the media is threaded like or of comparatively
extensive length as contrasted with its diameter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
520 for a continuous strand which is wound or coiled on
itself or in spaced relation so as to form at least one
spiral convolution.
SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Articles, appropriate
subclasses for a stock material product embodying a fiber
layer, subclass 292.1 for a fiber-containing web or sheet,
and subclasses 357+ for a mass of fibers or filaments which
are coated or structurally defined.
Subclass:
528
This subclass is indented under subclass 527. Apparatus in
which the fiber or strand is derived from matter which is or
has been living (e.g., hair, cellulose, coal) or is produced
by organic chemical synthesis (e.g., nylon, polyethylene).
Subclass:
529
This subclass is indented under the class definition.
Apparatus not otherwise provided for above.
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