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 034
DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS
Class Definition:
This is the generic class for (1) the separation of liquids
from solids, i.e., drying; (2) the contacting of solids with
either, or both, gases or vapors; and (3) feather treatment.
It has both process and apparatus not elsewhere provided for
but no products thereof. When a product is claimed it is
classified in the class appropriate thereto and
cross-referenced here for the process or apparatus.
In the definitions of this class, "material" means that which
is undergoing treatment, which may be of any kind or form and
includes the living body.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
NOTES TO LINES WITH OTHER CLASSES
The lines between Class 34 and other classes are in the notes
below and also in References To OTher Classes, below.
(0.5) NOTE TO THIS SECTION
(0.5) Note. Class 134, Cleaning and Liquid Contact With
Solids, is the generic class for contacting solid material
with liquids, and see the line with Class 34 in Lines With
Other Classes in the class definition of Class 134.
(1) NOTE TO THIS SECTION
(1) Note. Material heating and heat generating classes that
have lines with Class 34 are referenced to this (1) Note in
the search notes in References to Other Classes, below.
(2) NOTE TO THIS SECTION
(2) Note. The following classes are superior to this class
(34) and takes the subject matter there provided for, even
though involving drying and/or gas or vapor contact with
solids:
Class 8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers.
Class 12, Boot and Shoe Making, has the following line:
Processes and apparatus for drying only are in Class 34.
Where in addition to the drying there are steps of or means
for shoe manufacture, the patents are in Class 12. Class 12
also includes (see particularly subclasses 1, 41.1, 41.3, and
41.5) processes and apparatus for treating shoes or shoe
parts by steam or other vapors, moisture or moist air to
temper or soften the shoes.
Class 19, Textiles: Fiber Preparation.
Class 26, Textiles: Cloth Finishing. Subclasses 71+ take
cloth drying or heating with means for expanding (e.g.,
stretching, spreading) a running length web of the cloth; or
steps for applying a stretching or spreading force to the
fabric in addition to that incidental to mere feed of the
fabric through the machine.
Class 28, Textiles: Manufacturing, subclasses 217+ for thread
finishing combined with drying.
Class 38, Textiles: Ironing or Smoothing, has processes and
apparatus for producing a smooth appearance on the surface of
a textile article or fabric, most of which necessarily
produce a concurrent drying action and some of which have gas
or vapor contact means, particularly subclasses 3, 14+ and
77.1+.
Class 43, Fishing, Trapping, and Vermin Destroying. See
particularly subclasses 124+ for destruction of vermin by
gases and vapors.
Class 44, Fuel and Related Composition.
Class 47, Plant Husbandry.
Class 48, Gas: Heating and Illuminating.
Class 57, Textiles: Spinning, Twisting, and Twining.
Class 65, Glass Manufacturing.
Class 66, Textiles: Knitting.
Class 68, Textiles: Fluid Treating Apparatus, particular
attention being called to subclasses 5+ for textile gas or
vapor treating apparatus; subclasses 19+ for drying
combinations, and subclasses 241+ for wringers, per se.
Class 71, Chemistry: Fertilizers.
Class 72, Metal Deforming, subclasses 41+ for disclosure of
work lubricating.
Class 75, Specialized Metallurgical Processes, Compositions
for Use Therein, Consolidated Metal Powder Compositions, and
Loose Metal Particulate Mixtures.
Class 87, Textiles: Braiding, Netting, and Lace Making.
Class 99, Foods and Beverages: Apparatus, (1) takes apparatus
for treating food materials, in which, in addition to drying
and/or gas or vapor contact there are additional means for
performing additional treating operations on food (for
example, adding ingredients, comminuting, forming, etc.); (2)
takes apparatus for treating foods by gas or vapor contact
for moistening. See Class 99, subclasses 468+ for apparatus
of that class type providing an enclosed modified atmosphere,
and subclasses 516+ for the application of treating fluid.
Class 101, Printing. Note particularly subclasses 416.1+ and
the notes thereto.
Class 106, Compositions: Coating or Plastic.
Class 109, Safes, Bank Protection, or a Related Device,
subclasses 20 and 29+.
Class 127, Sugar, Starch, and Carbohydrates.
Class 132, Toilet.
Class 139, Textiles: Weaving.
Class 140, Wireworking.
Class 144, Woodworking, see particularly subclasses 50+, 254
and 271.
Class 148, Metal Treatment.
Class 149, Explosive and Thermic Compositions or Charges.
156, Adhesive Bonding and Miscellaneous Chemical
Manufacture.
159, Concentrating Evaporators, for drying apparatus or
processes which start with a liquid suspension or solution of
solids and concentrate the same, even though carried to the
point of complete dryness of the solids.
162, Paper Making and Fiber Liberation, for combination of
drying or gas or vapor contact with solids combined with a
paper making or fiber liberation step there provided for; see
especially subclasses 290, 359 and 375+ for such combinations
including heating or heat exchange means.
169, Fire Extinguishers, for such apparatus and processes,
per se, Class 34 having combinations involving such subject
matter; see particularly subclasses 43+, 83 and 90.
196, Mineral Oils: Apparatus, for apparatus for the treatment
of mineral oils.
201, Distillation: Processes, Thermolytic. See Lines With
Other Classes of the class definition of Class 201 for the
line.
202, Distillation: Apparatus, and see Lines With Other
Classes to the class definition of Class 202 for the line.
203, Distillation: Processes, Separatory. See Lines With
Other Classes of the class definition of Class 203 for the
line.
204, Chemistry: Electrical and Wave Energy.
208, Mineral Oils: Processes and Products, for processes of
treating and preparing mineral oils including their
separation from sands, coal or shales.
245, Wire Fabrics and Structure.
252, Compositions, particularly subclasses 60 and 61, for
physical separation agents.
260, Chemistry of Carbon Compounds. It is noted that the
removal of water of crystallization is considered a chemical
manufacturing operation for Class 260.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, the line between Classes 34 and 264 in regard to
processes for spinning (by extrusion) and drying the extruded
filament in a significant manner, is that Class 34 takes such
inventions when the extrusion step is not significantly
claimed. Class 264 takes methods, per se, for treating a
plastic body with a vapor to smooth or polish the surface,
subclass 341.
266, Metallurgical Apparatus, subclasses 251+ for means
treating solid metal objects by contacting the object with a
gas to bring about a metallurgical change in the object,
e.g., gas quenching.
270, Sheet-Material Associating.
291, Track Sanders, particularly subclasses 3+, 18, and 19+.
396, Photography, subclass 579 for the use of a gaseous fluid
treating apparatus in photography.
399, Electrophotography, subclass 338 for fixing an image to
a copy medium by heat contact.
404, Road Structure, Process, or Apparatus, subclasses 83+.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, has the following
line with Class 34: Processes and Apparatus for preserving,
disinfecting, or sterilizing by drying only, or drying
combined with special ray treatment only, are in Class 34.
Where in addition to the drying and/or special ray treatment
steps or apparatus, there are additional steps or apparatus
to perform disinfecting, deodorizing, preserving, or
sterilizing, the patent is placed in Class 422, or placed in
classes which provided for the additional combined
operations, e.g., Class 8, Bleaching and Dyeing; Fluid
Treatment and Chemical Modification of Textiles and Fibers,
or Class 427, Coating Processes, etc.
423, Chemistry of Inorganic Compounds, it is noted that the
removal of water of crystallization is considered a chemical
reaction for Class 423.
424, Drug, Bio-Affecting and Body Treating Compositions.
425, Plastic Article or Earthenware Shaping or Treating:
Apparatus, appropriate subclass for shaping or reshaping
apparatus for plastic material combined with drying means,
especially subclasses 72.1+ for a shaping orifice and
downstream gaseous treating means and subclasses 73+ for such
apparatus combined with a ventilating hood or chamber.
426, Food or Edible Material: Processes, Compositions, and
Products, (1) takes all.
430, Radiation Imagery Chemistry: Process, Composition, or
Product Thereof.
435, Chemistry: Molecular Biology and Microbiology,
subclasses 283.1+, particularly subclass 284.1, for apparatus
for preserving differentiated tissue or organs; subclass
307.1 for apparatus for preserving micro-organisms and
subclass 308.1 for apparatus for separating micro-organisms
from culture media.
460, Crop Threshing or Separating.
493, Manufacturing Container or Tube From Paper; or Other
Manufacturing From a Sheet or Web.
502, Catalyst, Solid Sorbent or Support, Therefor: Product or
Process of Making, subclasses 20+ for a process of
regenerating or reactivating a catalyst or sorbent, other
than mere drying.
504, Plant Protecting and Regulating Compositions.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Process of Making, Stabilizing, Breaking, or
Inhibiting, subclasses 113+ for compositions for or
subcombination compositions for or breaking of or inhibiting
of colloid systems (e.g., foam breaking, emulsion breaking,
dispersion inhibiting, suspension settling, gel breaking,
smoke suppressing, coagulating, flocculating), when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
585, Chemistry of Hydrocarbon Compounds, subclass 15 for
synthesis of a hydrocarbon hydrate with subsequent removal of
water therefrom.
588, Hazardous or Toxic Waste Destruction or Containment,
this is the generic class for destroying or containing any
form of nonradioactive hazardous or toxic waste.
607, Surgery: Light, Thermal, and Electrical Application, see
particularly subclasses 1+.
(3) NOTE TO THIS SECTION
(3) Note. The classes with special types of Class 34 subject
matter or combinations involving such subject matter not
treated above are referenced to this (3) Note in the search
notes in References to Other Classes, below.
(4) NOTE TO THIS SECTION
(4) Note. The classes that take the subcombinations of Class
34 subject matter there provided for are referenced to this
(4) Note in the search notes in References to Other Classes,
below.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, has such subject
matter having as a part thereof means to dry and/or contact
with gases or vapors particularly subclass 111.1 for dry
closets with driers or burners, subclasses 524+ for vapor or
hot air baths, and subclasses 209+ for ventilating means.
(special types of Class 34 subject matter or combinations.
See (3) Note of Lines With Other Classes)
5, Beds, appropriate subclasses particularly subclass 421,
690, or 724+ for mattress ventilation, inspection or heating.
(special types of Class 34 subject matter or combinations.
See (3) Note of Lines With Other Classes)
15, Brushing, Scrubbing, and General Cleaning, has the
characters of apparatus there provided for, even though the
sole disclosed function is for drying. Relative to the air
blast and suction apparatus, those which remove liquids by an
air blast or suction cleaner action are in Class 15 and those
which remove liquids by evaporative action are in Class 34.
Apparatus for drying and/or gas or vapor contact with solids
involving the types of operations for Class 15 in combination
with other types for Class 34 are placed in Class 34.
Apparatus involving Class 15 type structures (excepting the
situation outlined in the first and third sentences of this
paragraph) combined with Class 34 type structures are placed
in Class 15. (special types of Class 34 subject matter or
combinations. See (3) Note of Lines With Other Classes)
30, Cutlery, subclass 34.05 and 123 and their indented
subclass, particularly subclasses 41, 128+ and 140, has
cutlery combined with driers and/or gas or vapor contact
means built as part of the structure thereof. (special types
of Class 34 subject matter or combinations. See (3) Note of
Lines With Other Classes)
36, Boot, Shoes, and Leggings, subclass 2.6 and 3, has
heated and ventilated boots and shoes. (special types of
Class 34 subject matter or combinations)
51, Abrasive Tool Making Process, Material, or Composition,
for an abrasive tool making process involving drying and/or
gas or vapor contact with solids. (special types of Class 34
subject matter or combinations. See (3) Note of Lines With
Other Classes)
52, Static Structures (e.g., Buildings) (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
62, Refrigeration, has apparatus and processes for separating
liquids from other materials by refrigerating operations,
Class 34 having the same combined with other apparatus or
processes for drying and/or gas or vapor contact with solids.
(special types of Class 34 subject matter or combinations.
See (3) Note of Lines With Other Classes)
95, Gas Separation: Processes, appropriate subclasses (a) for
the separation of a gas from a fluid mixture in combination
with the regeneration of the separating media by drying or by
gas or vapor contact and (b) the subcombination of the
separation of a gas from a fluid mixture. (special types of
Class 34 subject matter or combinations. See (3) Note of
Lines With Other Classes)
96, Gas Separation: Apparatus, appropriate subclasses (a) for
apparatus for the separation of a gas from a fluid mixture in
combination with means to regenerate the separating media by
drying or by gas or vapor contact and (b) the subcombination
of apparatus for the separation of a gas from a fluid
mixture. (special types of Class 34 subject matter or
combinations. See (3) Note of Lines With Other Classes)
99, Foods and Beverages: Apparatus, Line with Class 34. Class
99 takes all cooking apparatus. (Material heating and heat
generating class. See (1) Note of Lines With Other Classes)
100, Presses, appropriate subclasses for presses not
elsewhere provided for, and particularly subclasses 92+ for
presses combined with means to heat the material. Class 100
has expressing of liquids from material, per se,
(particularly in subclasses 104+) and expressing combined
with heating of the materials undergoing expressing.
Expressing combined with drying of the solids other than by
heating necessary for expressing is in Class 34. (special
types of Class 34 subject matter or combinations. See (3)
Note of Lines With Other Classes)
105, Railway Rolling Stock, particularly subclass 160.5 and
451. (Class taking subcombinations of Class 34 matter. See
(4) Note of Lines With Other Classes above)
110, Furnaces, has solid fuel furnaces with means for drying
the fuel burned and/or with means to contact the fuel with
gases or vapors as an incident to burning, and corresponding
processes. (Material heating and heat generating class. See
(1) Note of Lines With Other Classes)
118, Coating Apparatus, subclasses 58+ for coating
apparatus combined with means to heat, dry, cool or contact
the work with a noncoating gas or vapor, and subclasses 715+
for apparatus for coating work with a gas or vapor other than
steam. Coating or impregnating with steam is in Class 34.
Apparatus for treating a coating with a solvent vapor, per
se, to smooth, polish or coalesce the coating is in Class 34.
(special types of Class 34 subject matter or combinations.
See (3) Note of Lines With Other Classes)
122, Liquid Heaters and Vaporizers, having means to dry the
solid fuel burned and/or with means to contact the fuel with
gases or vapors as an incident to burning, and corresponding
processes. (Material heating and heat generating class. See
(1) Note of Lines With Other Classes)
126, Stoves and Furnaces, has: (1) Solid Fuel burning
subcombinations having means to dry the solid fuel burned
and/or with means to contact the fuel with gases or vapors as
an incident to burning and corresponding processes. (2)
Combination of fuel (solid or fluid) burners with means to
apply heat or general utility, having no means specialized
for drying, and corresponding processes. If a patent has any
claim restricted to a drying process, the patent is placed in
Class 34 and cross-referenced to Class 126 for the heating
apparatus. (Material heating and heat generating class. See
(1) Note of Lines With Other Classes)
131, Tobacco. Line with Class 34: (1) Processes of drying
and/or treating tobacco with gases and/or vapors both, per
se, and combined with other treatments are in Class 131. (2)
Tobacco drying apparatus combined with means to perform other
operations is in Class 131. (3) Tobacco drying apparatus, per
se, is in Class 34. (special types of Class 34 subject matter
or combinations. See (3) Note of Lines With Other Classes)
135, Tent, Canopy, Umbrella, or Cane. (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
138, Pipes and Tubular Conduits. (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means. (Class taking subcombinations of Class 34
matter. See (4) Note of Lines With Other Classes above)
164, Metal Founding, appropriate subclasses for processes and
apparatus for mold forming and drying. (special types of
Class 34 subject matter or combinations. See (3) Note of
Lines With Other Classes)
165, Heat Exchange. The line with Class 34 is: (1) Class 34
takes all patents having any claim restricted to a process of
drying. (2) Class 34 takes all patents having any claim
restricted to a process which involves contacting a solid
undergoing treatment with a gas or vapor. (3) Class 165 takes
all heat exchange processes not limited as in (1) or (2)
above. (4) Class 34 takes apparatus for exchanging heat
between fluent materials combined with added means for drying
and/or contacting solids undergoing treatment with gases or
vapors. (5) Class 165 has apparatus exchanging heat between
fluent materials not having the added features set forth in
(4) above, even though discharge of gases or vapors to an
enclosure is claimed, where there is no means to promote
contact with solids and/or to handle solids therein.
(Material heating and heat generating class. See (1) Note of
Lines With Other Classes)
174, Electricity: Conductors and Insulators, has drying means
constituting a part of the structure, particularly subclasses
8+. (special types of Class 34 subject matter or
combinations. See (3) Note of Lines With Other Classes)
192, Clutches and Power-Stop Control, (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
193, Conveyors, Chutes, Skids, Guides, and Ways. (Class
taking subcombinations of Class 34 matter. See (4) Note of
Lines With Other Classes above)
198, Conveyors: Power-Driven. (Class taking subcombinations
of Class 34 matter. See (4) Note of Lines With Other Classes
above)
201, Distillation: Processes, Thermolytic. See Lines With
Other Classes of the class definition of Class 201 for the
line. (Material heating and heat generating class. See (1)
Note of Lines With Other Classes)
202, Distillation: Apparatus. See Lines With Other Classes
of the class definition of Class 202 for the line. (Material
heating and heat generating class. See (1) Note of Lines With
Other Classes)
203, Distillation: Processes, Separatory. See Lines With
Other Classes of the class definition of Class 203 for the
line. (Material heating and heat generating class. See (1)
Note of Lines With Other Classes)
209, Classifying, Separating, and Assorting Solids, has the
combination with drying, particularly subclass 2, 3, 10, and
11, except where the sole separation is of a portion of the
material for recirculation for further drying, which is in
Class 34, particularly subclasses 10, 11, 57, and 102, and
those patents in which the treating gas or vapor may
incidentally carry away some solids where no classifying,
separating or assorting is intended, even though such solids
may be separated from the gas or vapor, are in subclasses
26+, 32, and 79+. Class 209 has all processes and apparatus
for contacting solids with gases or vapors for the purposes
of such class see subclasses 132+. (special types of Class 34
subject matter or combinations. See (3) Note of Lines With
Other Classes)
210, Liquid Purification or Separation has (1) apparatus for
separating or treating liquids mixed with solids, which
mixture is in a flowable condition, see particularly
subclasses 175+ for separators combined with means to heat
the separator. Class 34 takes such separators and
corresponding processes when combined with additional and
independent driers or means to contact the separated solids
with gas. (2) Class 210 also takes centrifugal extractors
having a perforate wall surrounding the material or article
to be separated from a liquid and Class 34, in subclasses 8
and 58+, takes centrifugal separators having means to support
an article but not provided with a perforate wall (and
corresponding processes where no filtration is defined).
211, Supports: Racks. (Class taking subcombinations of Class
34 matter. See (4) Note of Lines With Other Classes above)
219, Electric Heating, subclasses 600+ for inductive
heating, subclasses 678+ for microwave heating, subclasses
764+ for capacitive dielectric heating, and subclass 50, has
metal heating even though involving gas or vapor contact with
the metal heated. Note especially subclasses 72+ subclasses
200+ has electric heating means combined with means to apply
heat of general utility, having no means specialized for
drying, and corresponding processes; see particularly
subclass 280 for liquid and gas heaters, subclasses 391+ for
ovens. If a patent has claim restricted to a drying process,
it is placed in Class 34 and cross-referenced to Class 219
for the heating apparatus, except that if the claimed process
is in fact no more than electric heating of the work the
patent is classified in Class 219. (Material heating and heat
generating class. See (1) Note of Lines With Other Classes)
221, Article Dispensing, appropriate subclasses for article
dispensers not otherwise provided for. Class 221 takes
subcombinations of Class 34 subject matter as relate to
article dispensing (feeding) devices, per se. See the class
definition of Class 221 for the disposition of other related
art. (Class taking subcombinations of Class 34 matter. See
(4) Note of Lines With Other Classes above)
222, Dispensing, and see the reference to Class 34, under
section 24 of the main class definition for the line. (Class
taking subcombinations of Class 34 matter. See (4) Note of
Lines With Other Classes above)
223, Apparel Apparatus, and see Note (6) to the main class
definition thereof for the line with Class 34. (special types
of Class 34 subject matter or combinations. See (3) Note of
Lines With Other Classes)
226, Advancing Material of Indeterminate Length, appropriate
subclasses for methods of, and apparatus for, feeding
material without utilizing the leading or trailing ends to
effect movement of the material. (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
236, Automatic Temperature and Humidity Regulation, has such
means and corresponding processes not involving specific
characteristics of the apparatus or process steps for this
class (34). (special types of Class 34 subject matter or
combinations. See (3) Note of Lines With Other Classes)
237, Heating Systems. The line with Class 34 is: (1) Class
34 takes all processes limited to drying. (2) Class 237 takes
processes of heating enclosures, not limited to drying. (3)
Class 34 takes the combination of a heating system not
claiming combustion heating means in combination with means
to apply the heat and/or the heated gases or vapors to solids
or such means in combination with material handling or
supporting means. For such combinations with combustion
heating means, see Class 432, Heating. (4) Class 237 takes
the heating system subcombination and in combination with an
enclosure to be heated. (Material heating and heat generating
class. See (1) Note of Lines With Other Classes)
241, Solid Material Comminution or Disintegration,
appropriate subclasses, for solid material comminution
combined with either drying or gas and vapor contact. Where
the material handling means has no special features of
construction to cause comminution (as feeding means,
agitating means, etc.), the patent is in Class 34, even
though incidental breaking up of the material may occur. See
section 6 of the main class definition of Class 241. (special
types of Class 34 subject matter or combinations. See (3)
Note of Lines With Other Classes)
242, Winding, Tensioning, or Guiding. (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
248, Supports. (Class taking subcombinations of Class 34
matter. See (4) Note of Lines With Other Classes above)
261, Gas and Liquid Contact Apparatus. (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
312, Supports: Cabinet Structure, has the structure of such
devices, including those combined with static gas or vapor
treating means in subclass 31, and see note (1) to the
definition of subclasses 31+ for the line. Cabinet structures
combined with ventilating means are in subclass 166 and with
heater for purposes other than drying, are in subclass 167.
(special types of Class 34 subject matter or combinations.
See (3) Note of Lines With Other Classes)
312, Supports: Cabinet Structure, subclasses 31+ for
cabinets with gas or vapor treatment of material, subclass
213 for cabinets with ventilated or foraminous walls,
subclass 214 for cabinets with spaced or insulated walls,
subclass 229 for cabinets with drains and subclass 236 for
cabinets with heat exchange means. (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
366, Agitating. The line with Class 34 is: Class 34 takes
all patents having any claim restricted to a drying process.
Class 366 takes agitating processes not limited to drying.
Class 366 takes agitators, per se, including agitators in
which the mixing is through the medium of a fluid fed for
mixing and not drying purposes, agitators with means to dry
materials prior to feeding to and/or subsequent to discharge
from the agitator, agitators combined with means to heat the
material during agitation for purposes other than drying, and
agitators with means to incorporate a fluid (including a gas)
in the final product. Class 34 has drying apparatus and
apparatus for contacting solids with gases or vapors, even
though agitating means is included, not classifiable in Class
366, under (3). (special types of Class 34 subject matter or
combinations. See (3) Note of Lines With Other Classes)
373, Industrial Electrical Heating Furnaces. Line with Class
34: (1) Class 34 takes all patents claiming a process of
drying, even though electric furnace structure is also
claimed. (2) Class 373 takes electric furnace processes of
heating, not limited to drying. (3) Class 373 takes electric
furnace structures.(Material heating and heat generating
class. See (1) Note of Lines With Other Classes)
406, Conveyors: Fluid Current, for such conveyors and
processes having no means or steps for drying and/or
contacting solids with gases or vapors in addition to those
required for fluid current conveying. (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
414, Material or Article Handling. (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
426, Food or Edible Material: Processes, Compositions, and
Products, for processes. Line with Class 34. (1) Class 34
takes the drying, per se, of edible material.(2) Class 426,
takes the cooking and roasting of foods, gas or vapor contact
for moistening edible material and a food working step
combined with a gas or vapor contact with a solid (edible
material). (Material heating and heat generating class. See
(1) Note of Lines With Other Classes)
427, Coating Processes, subclass 372.2 for processes of
drying a coating. Processes of coating portions of a
substrate to shield the substrate against drying are provided
for in this class, subclass 9. (special types of Class 34
subject matter or combinations. See (3) Note of Lines With
Other Classes)
431, Combustion. (Class taking subcombinations of Class 34
matter. See (4) Note of Lines With Other Classes above)
432, Heating, subclasses 1+ for a residual heating process,
even though involving gas or vapor contact with solids, not
limited to drying; subclasses 159+ for the combination of a
specific combustion products generator and means providing
for contact between work and the generated products; subclass
198 for apparatus heating work in an externally heated closed
chamber while in contact with a protective or treating gas;
and appropriate subclasses for a drier with specific
combustion heating means claimed and for residual heating
apparatus. (Material heating and heat generating class. See
(1) Note of Lines With Other Classes)
451, Abrading, particularly subclass 56 for a process of
making or treating an abrasive tool which may involve drying
and/or gas or vapor contact with solids. (special types of
Class 34 subject matter or combinations. See (3) Note of
Lines With Other Classes)
454, Ventilation, attention being called to ventilated
storage chambers, subclasses 173+. (Class taking
subcombinations of Class 34 matter. See (4) Note of Lines
With Other Classes above)
494, Imperforate Bowl: Centrifugal Separators, appropriate
subclasses for apparatus and process for breaking up a
mixture of fluids or fluent substances into two or more
components by centrifuging within a generally solid-walled,
receptacle-like member. Included therein is the separation of
a particulate solid from a liquid; however, such drying as
may concurrently take place is secondary to the recovery of
one or the other or both, of the components. Specifically
provided for therein are certain aspects of the separating
apparatus such as means for exchanging heat, means for
furnishing an auxiliary fluid, and so forth. (special types
of Class 34 subject matter or combinations. See (3) Note of
Lines With Other Classes)
SUBCLASSES
Subclass:
58
This subclass is indented under the class definition.
Apparatus including means for subjecting material undergoing
treatment to centrifugal force.
(1) Note. The art is placed here on the disclosed function
of subjecting the material undergoing treatment to
centrifugal force. Apparatus having rotary parts acting on
the material but not disclosed for the purpose of subjecting
the material to centrifugal force has been placed in
appropriate subclasses below, particularly subclasses 126
through 142, 179+ and 184+.
(2) Note. See the Search Notes below--especially in the
subclasses noted--for classes having means subjecting
material to centrifugal force
(3) Note. See the Search Notes below for classes that
involve use of centrifugal force
SEE OR SEARCH THIS CLASS, SUBCLASS:
312
SEE OR SEARCH CLASS:
30, Cutlery, subclass 41. (class having means subjecting
material to centrifugal force)
68, Textiles: Fluid Treating Apparatus, subclasses 19+.
(class having means subjecting material to centrifugal
force)
99, Foods and Beverages: Apparatus, subclass 479, 503, 511+,
and 519 for centrifugal food treating apparatus. (class
having means subjecting material to centrifugal force)
118, Coating Apparatus, subclasses 52+ for coating
apparatus having means to centrifuge the work. (class having
means subjecting material to centrifugal force)
124, Mechanical Guns and Projectors, subclasses 4+. (class
involving use of centrifugal force)
127, Sugar, Starch, and Carbohydrates, subclass 19 and 56.
(class having means subjecting material to centrifugal
force)
159, Concentrating Evaporators, subclass 6. (class having
means subjecting material to centrifugal force)
162, Paper Making and Fiber Liberation, subclass 384. (class
having means subjecting material to centrifugal force)
165, Heat Exchange, subclasses 86+ for a heat exchanger
with heated or cooled movable surface. (class having means
subjecting material to centrifugal force)
198, Conveyors: Power-Driven, subclass 642. (class involving
use of centrifugal force)
209, Classifying, Separating, and Assorting Solids, subclass
120. (class involving use of centrifugal force)
209, Classifying, Separating, and Assorting Solids, subclass
60, 148 and 199. (class having means subjecting material to
centrifugal force)
210, Liquid Purification or Separation, subclasses 781+,
787+, 210+, and 360.1+ for centrifugal extracting processes
and apparatus there provided for, and see the reference to
Class 210 in References to Other Classes in the class
definition of this class (34). (class having means subjecting
material to centrifugal force)
223, Apparel Apparatus, subclasses 24+. (class having means
subjecting material to centrifugal force)
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 7,
650+, appropriate subclasses, 214+ and 380+ for scattering
fluent material by centrifugal force. (class having means
subjecting material to centrifugal force)
239, Fluid Sprinkling, Spraying, and Diffusing subclasses
214+. (class involving use of centrifugal force)
241, Solid Material Comminution or Disintegration, subclass 5
and 275. (class having means subjecting material to
centrifugal force)
260, Chemistry of Carbon Compounds, subclasses 107+, 704 and
705. (class having means subjecting material to centrifugal
force)
261, Gas and Liquid Contact Apparatus, subclasses 83+. (class
involving use of centrifugal force)
366, Agitating, subclasses 263+. (class involving use of
centrifugal force)
406, Conveyors: Fluid Current, subclass 71. (class involving
use of centrifugal force)
415, Rotary Kinetic Fluid Motors or Pumps, particularly
subclass 89, 93 and 203+. (class involving use of centrifugal
force)
435, Chemistry: Molecular Biology and Microbiology, subclass
313. (class having means subjecting material to centrifugal
force)
494, Imperforate Bowl: Centrifugal Separators, appropriate
subclasses for apparatus of that class, and see the search
note to Class 494 in References to Other Classes in the
definition of this class (34). (class having means subjecting
material to centrifugal force)
Subclass:
59
This subclass is indented under subclass 58. Apparatus
including a rotary member such as a plate, disc or cup which
throws the material against a receiver such as a conical
hopper.
(1) Note. In many of these apparatuses the material is
thrown into a receiver from which it falls to another thrower
and so on in succession. For other similar apparatus not
using centrifugal force, see this class, subclass 165 and
appropriate indented subclasses.
Subclass:
60
This subclass is indented under the class definition.
Apparatus claiming diverse means for performing two or more
diverse treating operations on material undergoing treatment.
At least one must be either (1) drying or (2) gas or vapor
contact with solids. Treating operations are operations
designed to change characteristics of the solid material.
Means for feeding, discharging, conveying, agitating, testing
or other ancillary operations on the material, which
operations do not change the characteristics of the material,
are not, of course, included in this group.
(1) Note. This subclass has the combination of lamps to
apply light energy within or outside of the visible spectrum.
Complete the search in this class, subclasses 266+, and see
the notes thereto.
(2) Note. This subclass and the indented subclasses do not
include plural apparatus of the same kind for performing
plural drying and/or gas or vapor contact operations of the
same type on the solids even though the units are referred to
by different names as steaming and drying chambers. Such
plural units, stage operations, plural chambers, etc., are
with the subclasses appropriate to the type of apparatus. See
Note (4) in subclass 209 of this class.
(3) Note. This subclass and indented subclasses do not
include single vacuum type apparatus. See the search notes
below.
(4) Note. For processes for performing diverse operations,
see the search notes below.
(5) Note. Apparatus providing for treatment of the gas or
vapor applied to the solids for treatment, or evolved from
the solids, is in this class, subclasses 72+.
(6) Note. See Note (2) to Lines With Other Classes in the
class definition of this class for drying and/or gas or vapor
contact apparatus for performing other operations provided
for in other classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
92 for single vacuum type apparatus.
subclasses 418+ for processes for performing diverse
operations.
Subclass:
61
This subclass is indented under subclass 60. Apparatus
including one or more means to remove liquids from solids and
two or more means to perform operations on solids other than
drying.
Subclass:
62
This subclass is indented under subclass 60. Apparatus
claiming in addition to drying means, means for cooling the
treated material.
(1) Note. Where both the drying and cooling operations upon
the material are by gas or vapor contact apparatus, the
patents have not been placed in this subclass or the indented
subclasses, but with the appropriate gas or vapor contact
apparatus subclasses, even though one or more of the contacts
with the solid material are claimed as cooling, when: (a)
There are plural contact apparatus of the same kind with
independent gas or vapor streams, even though some are and
some are not heated; see, for example, subclasses 209+ and
notes. (b) There is a single contact apparatus having plural
similar means for causing contact of plural independent gas
or vapor streams, even though some are and some are not
heated; see, for example, subclass 223 and notes. (c) There
is a single contact apparatus with means to selectively heat
and prevent heating of the contact gas or vapor (as
by-passing the heater), including the recirculating type
apparatus; see, for example, subclass 219 and note.
(2) Note. Single types of apparatus within the class
definition disclosed solely for cooling are with the
appropriate type of apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 391+ and 428+, and see the notes thereto.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclasses 61+ for combined heating and
cooling heat exchanger apparatus.
432, Heating, subclasses 77+ for residual heating apparatus
combined with work cooling structure.
Subclass:
63
This subclass is indented under subclass 62. Apparatus
including rotary drum driers of the internal type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
108 and indented, subclasses for other devices of this type,
including devices providing a cooling circuit for the
treating gas or vapor, particularly subclass 131.
Subclass:
64
This subclass is indented under subclass 62. Apparatus in
which a gravity material flow or "shaft type" drier has
combined with it cooling means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
165 and indented, subclasses for other driers of this type.
Subclass:
65
This subclass is indented under subclass 64. Apparatus in
which the cooling means is either (1) a section integral with
the drier, or (2) a similar "shaft type" gravity flow
section.
(1) Note. Devices which draw gases through one section to
cool the material and then heat it and pass it through
another section are here.
Subclass:
66
This subclass is indented under subclass 62. Apparatus in
which the cooling means which is combined with any drier is a
chamber integral with or similar to the drier.
SEE OR SEARCH THIS CLASS, SUBCLASS:
67 and see note thereto.
Subclass:
67
This subclass is indented under subclass 62. Apparatus in
which the cooling is done by means of atmospheric air
contacting the solids, regardless of the means employed, such
as blowers, conveyors or receptacles.
SEE OR SEARCH THIS CLASS, SUBCLASS:
63 through 66, for type driers and coolers there provided
for in which atmospheric air is used for contact cooling.
Subclass:
68
This subclass is indented under subclass 60. Apparatus in
which the only means for treatment is by (1) diverse heating
type apparatus, (2) diverse apparatus that treats by gas or
vapor contact, or (3) combinations of heat type with gas or
vapor type.
(1) Note. There must be at least two diverse types of
apparatus. A single type of apparatus having both heating
means and gas or vapor contact is placed with the type of
apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62 and indented subclasses, for similar drier and cooler
combinations.
subclasses 418+
Subclass:
69
This subclass is indented under subclass 60. Apparatus
including two or more distinct means for removing liquids
from solid materials undergoing treatment, but involving no
other character of operation on such material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 397+
Subclass:
70
Which at least one of the means causes liquid removal by
applying mechanical pressure to the solid material treated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 95, and 111, for driers including means for removing
liquids from solid absorbents and drier belts or felts, even
though done by expressing or wringing.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, appropriate
subclasses, particularly subclass 119.1, 120.1 and 260 and
indented subclasses.
68, Textiles: Fluid Treating Apparatus, subclass 21, 22 and
235 and indented subclasses, particularly subclass 241 and
indented subclasses.
100, Presses, appropriate subclasses, particularly subclasses
92+ for pressing combined with heating, cooling or drying.
And see the reference to Class 100 in (3) Note to the class
definition of this class (34) for a statement of the line
between the classes.
Subclass:
71
This subclass is indented under subclass 69. Apparatus
including means to remove liquids from the material
undergoing treatment by contacting the same with solid
material which removes the liquids by absorption, absorption
or adhesion.
(1) Note. External drum type driers utilizing belts or felts
have not been treated as solid material contact driers even
when the belts or felts are claimed as absorbent or
absorbent; see subclasses 111, 116 and indented subclasses,
and 123 for such type driers, per se.
SEE OR SEARCH THIS CLASS, SUBCLASS:
95 and 329+, and see the notes thereunder.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning for brushing
and wiping apparatus in general.
Subclass:
72
This subclass is indented under the class definition.
Apparatus coming including means to treat the gas or vapor
which either contacts or is evolved from the solid material
undergoing treatment.
(1) Note. When heating of the gas or vapor that contacts the
solid is the only treating means the patent is classified
with appropriate type of apparatus.
(2) Note. Means to mix treating gases or vapors of the same
kind though differing in physical characteristics are placed
with the appropriate type of apparatus. If the gases or
vapors are recirculated with the addition to or replacement
thereof the patents are placed in the various subclasses for
recirculation of treating gases or vapors; see (1) Note to
subclass 219.
(3) Note. For means for cooling gases or vapors by
refrigeration see search notes below.
(4) Note. For other gas or vapor treatment, see the search
notes below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 280+ for feather treating. Many of these devices
inject steam and also separate dust, etc., from the exhaust
gases.
subclasses 467+ for processes involving treatment of gas or
vapor.
524 particularly subclasses 526+, 548, and 557, for
automatic control combinations.
SEE OR SEARCH CLASS:
62, Refrigeration, appropriate subclasses, for means for
cooling gases or vapors by refrigeration.
96, Gas Separation: Apparatus, appropriate subclasses for
apparatus for the separation of a gas from a fluid mixture.
110, Furnaces, subclass 119 and indented subclasses; 126,
Stoves and Furnaces, subclasses 113 and 280; and 266,
Metallurgical Apparatus, subclass 144 and indented
subclasses.
165, Heat Exchange, appropriate subclasses for means for
cooling gases or vapors by by heat exchange
260, Chemistry of Carbon Compounds, for other gas or vapor
treatment.
261, Gas and Liquid Contact Apparatus, appropriate subclasses
for gas and liquid contact devices, per se.
312, Supports: Cabinet Structure, subclass 31.01, for means
for cooling gases or vapors by refrigeration.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, for other gas or
vapor treatment.
423, Chemistry of Inorganic Compounds, for other gas or vapor
treatment.
435, Chemistry: Molecular Biology and Microbiology, subclass
283.1 for fermentation apparatus, including means to treat
gases or vapors; particularly subclass 300.1 for apparatus
for trapping output gas; and subclass 301.1 for apparatus for
separating foam.
454, Ventilation, appropriate subclasses for gas and liquid
contact devices in combination with ventilating systems.
Subclass:
73
This subclass is indented under subclass 72. Apparatus having
means to condense vapors.
(1) Note. For condensers, per se, see Class 257, Heat
Exchange, subclass 24 and indented subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 468+
SEE OR SEARCH CLASS:
201, Distillation: Processes, Thermolytic, appropriate
subclasses for a thermolytic distillation process including
condensing vapors.
202, Distillation: Apparatus, particularly subclasses 185+
for the association of a still and a condenser.
203, Distillation: Processes, Separatory, appropriate
subclasses for a process of vaporizing a liquid material and
condensing the vapor.
Subclass:
74
This subclass is indented under subclass 73. Apparatus
including means other than the condensing means to treat the
treating gases or vapors by the addition or subtraction of
substances from the treating fluids.
Subclass:
75
This subclass is indented under subclass 73. Apparatus in
which the vapors directly contact the cooling substance such
as cold water or ice.
SEE OR SEARCH THIS CLASS, SUBCLASS:
72 74, 83, and 84, for other devices for contacting treating
gases or vapors with liquids.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, subclasses 75+ for
vapor condensers of the direct contact type; and subclass 140
for contact apparatus of general utility with a refrigeration
producer.
Subclass:
76
This subclass is indented under subclass 73. Apparatus in
which the vapor or gas and vapor mixture undergoing
condensation is forced to circulate by some mechanical
means.
Subclass:
77
This subclass is indented under subclass 76. Apparatus in
which the treating gases or vapors are recirculated in whole
or part over the condensing means and the material treated.
(1) Note. For other subclasses involving recirculation of
the treating gases or vapors, see (1) Note to subclass 219 of
this class.
Subclass:
78
This subclass is indented under subclass 73. Apparatus in
which the treating gases or vapors are recirculated in whole
or part due to the thermosyphonic action of the condensing
and/or heating means.
(1) Note. For other subclasses involving recirculation of
the treating gases or vapors, see (1) Note to subclass 219 of
this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
220 for similar apparatus not including condensers.
Subclass:
79
This subclass is indented under subclass 72. Apparatus in
which substances are separated from gases or vapors used to
contact the material under going treatment, or from the
evolved gases or vapors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 576+ for fluid current conveyor type driers
which are usually provided with means to separate the
material from the treating, i.e., conveying gas or vapor.
Subclass:
80
This subclass is indented under subclass 79. Apparatus in
which the substances are removed by absorbing means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 and 95, and see notes.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, subclasses 108+ for solid
sorbent apparatus.
312, Supports: Cabinet Structure, subclasses 31+ and see
the notes.
Subclass:
81
This subclass is indented under subclass 80. Apparatus in
which the absorbing means are in or form part of the treating
chamber walls, floor or ceiling.
Subclass:
82
This subclass is indented under subclass 79. Apparatus in
which the substances are removed by a filter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
80 and 81, for means for passing gases or vapors through
absorbing means which may also act to filter, or such means
combined with a filter.
SEE OR SEARCH CLASS:
55, Gas Separation, the subclasses beginning with subclass
474 for filter media for gas separation.
Subclass:
83
This subclass is indented under subclass 72. Apparatus in
which means are provided for injecting into the gas or vapor
some treating material.
(1) Note. This subclass includes means for injecting steam
or water for fire extinguishing purposes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
74 and 75.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, appropriate
subclasses, particularly subclasses 76-78.1.
Subclass:
84
This subclass is indented under subclass 83. Apparatus in
which the injecting devices act to circulate or promote flow
of the treating gas or vapor.
(1) Note. Many of these devices cause gas or vapor
recirculation. For other subclasses involving gas or vapor
recirculation, see (1) Note to subclass 219 of this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
221 in which a fluid similar in kind to the treating fluid
is injected.
Subclass:
85
This subclass is indented under the class definition.
Apparatus having either, or both, (1) means to clean the
apparatus or some portion thereof, (2) means to collect for
removal from the apparatus (with or without a removing means)
material escaping from the desired and intended treating
path.
(1) Note. Devices for agitating, feeding and/or discharging
the material treated are not included. For means to strip
material from external drum type driers, and for apparatus
provided with stirrers or scrapers see search notes below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 69+ for apparatus within the class definition
combined with draining devices.
71 and 95+, for means to separate solids used to dry
material undergoing treatment from such material, with or
without means to dry such solids and/or return such solids to
the machine.
72 and indented subclasses, (particularly subclass 79 and
indented subclasses, for means for removing material from the
gases or vapors used to treat the solids or from the gases or
vapors evolved due to treatment of the solids.
117 120, for for means to strip material from external drum
type driers.
173 178, and 179+, for apparatus provided with stirrers or
scrapers.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 70 for a heat exchanger with a
leakage collector, and subclass 95 for a heat exchanger with
cleaning means.
198, Conveyors: Power-Driven, subclasses 494+ for conveyor
cleaners.
201, Distillation: Processes, Thermolytic, subclass 2 for a
carbonizing process directed to cleaning the apparatus.
202, Distillation: Apparatus, subclass 241 for means for
cleaning and decarbonizing a retort or still.
Subclass:
86
This subclass is indented under the class definition.
Apparatus including means to conserve heat from gases or
vapors exhausted from the apparatus as by heat exchangers,
means to use exhaust gases or vapors for heating purposes or
the use of exhaust or treating gases or vapors to drive
engines.
(1) Note. Mere recirculation of gases or passing gases from
chamber to chamber is excluded, being placed with the type of
apparatus; see (1) Note to subclass 219 of this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 62+ for means using gases drawn through a cooler
or cooling section
68 for means using exhaust gas in two types of driers.
subclasses 73+ for means for condensing vapors,
79 for means for burning waste products carried in gases or
vapors.
427 and 513+.
SEE OR SEARCH CLASS:
60, Power Plants, appropriate subclasses.
165, Heat Exchange, subclass 66 for a combined heating and
cooling device that includes a means for exchanging heat
between supply and exhaust lines.
201, Distillation: Processes, Thermolytic, subclasses 13+
for a carbonizing process including the recovery of heat by
indirect heat exchange.
203, Distillation: Processes, Separatory, subclasses 21+
for a process of distilling a liquid and recovering heat by
indirect heat exchange.
220, Receptacles, and 234, for apparatus wherein the heater
causes a gas circulation.
432, Heating, subclasses 78+ for a combustion type heater
in which combustion air recovers heat from exiting work;
subclass 82 for a heater in which entering work recovers heat
from exiting work; and subclasses 135+ for a heating chamber
in which combustion feed materials recover heat from the
chamber exhaust.
Subclass:
87
This subclass is indented under the class definition.
Apparatus in which means are provided for interlocking or
connecting various parts of the treating apparatus so that
upon an operation of one part other operating elements are
cut off, stopped or operated.
(1) Note. Mere common drive means are not included but are
found under appropriate type of apparatus.
(2) Note. Electrical connections for simultaneous
energization or deenergization are included.
(3) Note. Compare automatic control subclasses 524+ and
indented subclasses, and see notes.
SEE OR SEARCH CLASS:
101, Printing, subclass 416.1 for drying devices interlocked
or synchronized with a press.
192, Clutches and Power-Stop Control, particularly subclass
116.5 and indented subclasses.
Subclass:
88
This subclass is indented under the class definition.
Apparatus including means to display or inspect the solids
undergoing treatment or to illuminate the apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
89 which contains, among other things, sampling devices, and
see notes.
93 for apparatus primarily designed to use solar heat which
may have glass covers.
201 (6) Note, for other treating enclosures.
SEE OR SEARCH CLASS:
62, Refrigeration, subclasses 433+ for refrigerating
display apparatus.
99, Foods and Beverages: Apparatus, subclass 341.
210, Liquid Purification or Separation, subclasses 85+ for
separators combined with signals or indicators.
220, Receptacles, subclass 602, 662+ and 377+ for transparent
closure.
221, Article Dispensing, and see the class definition for the
distribution of art on article dispensing, per se.
312, Supports: Cabinet Structure, particularly subclasses
114+ for similar display apparatus.
220, Receptacles, subclass 82, and see the notes thereto, for
structures wherein a transparent panel is mounted in a wall.
454, Ventilation, particularly subclasses 173+ for
ventilated structures which may contain material.
Subclass:
89
This subclass is indented under the class definition.
Apparatus including means, such as weighers, samplers,
thermometers, overflow indicators, and position indicators,
for indicating or testing the operation of the apparatus.
(1) Note. Compare this class, subclass 88, and see the
notes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 524+ particularly subclasses 527+, for signals
such as lights, bells, etc., combined with automatic
controls,
SEE OR SEARCH CLASS:
73, Measuring and Testing.
116, Signals and Indicators.
198, Conveyors: Power-Driven, subclass 502.1.
340, Communications: Electrical, subclasses 500+.
374, Thermal Measuring and Testing, subclasses 141+ for a
thermometer combined with a diverse art device.
Subclass:
89.1
This subclass is indented under the class definition.
Apparatus in which, in combination with means for removing
liquids from material undergoing treatment by contacting the
same with solid material which removes the liquids by
absorption, there is means for any purpose other than drying
and/or contacting solids with gas or vapor; or wherein, in
combination with said liquids-removing means, there is means
for attaching it to such other purpose means.
(1) Note. Mere indicia or mere storage space intrinsic to
blotting means structure (e.g., the interior of the cylinder
of the rolling contact means of subclass 95.3) is not
considered to be other purpose means for this subclass.
Blotting means so claimed will be placed in subclasses 95.1+
(e.g., subclass 95.3).
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 105
for a patent to the combination of blotting means, with a
penholder claimed in greater detail than is necessary to
define a relationship of the blotting means thereto.
40, Card, Picture, or Sign Exhibiting, subclass 358 for
blotting means combined with means for displaying a car,
picture, or sign.
248, Supports, subclass 504 for a desk pad (of construction
common to blotter holders) wherein the invention is to means
to overlie and thereby hold-down another, planar article
(e.g., glass panel).
281, Books, Strips, and Leaves, subclasses 3+ for blotting
means combined with a book.
401, Coating Implements With Material Supply, subclass 52 or
195 for the combination of blotting means with a writing
implement with material supply, where more of the implement
is claimed than is necessary to define a relationship of the
blotting means thereto.
Subclass:
89.2
This subclass is indented under subclass 89.1. Apparatus
wherein the other purpose means is a geometrical instrument
of the straightedge type.
Subclass:
90
Apparatus under the subclass definition in which, in
combination with the apparatus for drying and/or contacting
solids with gases or vapors, there is apparatus for other
purposes and not provided for above.
(1) Note. The combined features are in addition to the
apparatus for feeding, discharging, agitating or conveying
the solids, heating, causing or directing gas or vapor flow
for contact with the material undergoing treatment.
(2) Note. For example, this subclass contains transportation
means for the apparatus, power take-offs, means to protect
persons from burning, as in hair driers, head rests, etc.
(3) Note. For devices operable to relieve pressure,
including safety devices, see this class, subclass 558, and
for means to inject steam or water, including fire
extinguishers, see subclass 83.
SEE OR SEARCH THIS CLASS, SUBCLASS:
91 and 111, for drum driers including a belt or felt and
means to dry the belt or felt, and subclasses 71 and 95 for
means to dry by contact with solid matter plus means to dry
the solid matter.
427 for drying processes combined with a process of some
other kind.
SEE OR SEARCH CLASS:
100, Presses, subclass 102 for presses not elsewhere
provided for and combined with other features.
Subclass:
91
This subclass is indented under the class definition.
Apparatus combined with or including means to convert the
apparatus in whole or part to other apparatus not under the
class definition or into different types of apparatus within
the class definition.
(1) Note. Apparatus having a treating gas or vapor
circulation in which the gas or vapor can be caused to flow
over heating means or to bypass the heater are not here but
in the appropriate subclasses below. See (1) Note to subclass
62 of this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 72+ for apparatus including means to inject
substances into the gas so that the apparatus may have more
than one function, as drying and moistening.
Subclass:
92
This subclass is indented under the class definition.
Apparatus for treating material under less than atmospheric
pressure.
(1) Note. The enclosure may be heated or treating gas or
vapor circulated and such operation, if carried out under
less than atmospheric pressure, is not considered a plural
operation for subclass 60.
(2) Note. The means must apply definite sub-atmospheric
pressures and not merely cause the gas or vapor to flow onto
or through the solids, for which see the appropriate type of
apparatus.
(3) Note. For other apparatus or classes which may include
vacuum treating, see search notes referencing this (3) Note.
SEE OR SEARCH THIS CLASS, SUBCLASS:
191 for means for causing a pulsating gas or vapor flow.
242 402+ and 558, and see notes.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 300.1
for air blast and/or suction cleaning apparatus. (see (3)
Note above.)
48, Gas: Heating and Illuminating, subclasses 89+ and 119+.
(see (3) Note above.)
62, Refrigeration, subclass 100, 169 and 268+ for processes
and apparatus for refrigeration involving vacuumizing an open
outlet chamber. (see (3) Note above.)
99, Foods and Beverages: Apparatus, subclass 472. (see (3)
Note above.)
127, Sugar, Starch, and Carbohydrates, subclass 16. (see (3)
Note above.)
128, Surgery, subclass 204. (see (3) Note above.)
141, Fluent Material Handling, With Receiver or Receiver
Coating Means, subclasses 65+ for apparatus for merely
evacuating and/or gas or vapor charging receivers. (see (3)
Note above.)
159, Concentrating Evaporators, subclass 3, 17 and 22+. (see
(3) Note above.)
196, Mineral Oils: Apparatus, particularly subclass 114 for
apparatus adapted for distilling a mineral oil under reduced
pressure. (see (3) Note above.)
198, Conveyors: Power-Driven, subclass 803 for rotary
transfer valves. (see (3) Note above.)
201, Distillation: Processes, Thermolytic, subclass 35 for a
process of carbonizing under less than atmospheric pressure.
(see (3) Note above.)
202, Distillation: Apparatus, particularly subclass 205. (see
(3) Note above.)
203, Distillation: Processes, Separatory, subclasses 74+
and 91+ for a process of distilling a liquid under less than
atmospheric pressure. (see (3) Note above.)
220, Receptacles, appropriate subclass for receptacle
structure. (see (3) Note above.)
373, Industrial Electric Heating Furnaces, subclass 54, 63,
110+, and 140+. (see (3) Note above.)
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclasses 285+
and 307+.
Subclass:
93
This subclass is indented under the class definition.
Apparatus peculiarly adapted for the use of solar energy to
treat material.
(1) Note. For frames for supporting hair on the head while
drying, see this class, subclass 96.
SEE OR SEARCH THIS CLASS, SUBCLASS:
88
SEE OR SEARCH CLASS:
47, Plant Husbandry, subclass 17.
60, Power Plants, subclass 641.1.
126, Stoves and Furnaces, subclasses 561+ and 569+ and in
particular subclass 680 for a solar energy concentrator with
a support for material heated.
220, Receptacles, subclass 377, 602, and 662+, for a
receptacle having a transparent wall or closure.
250, Radiant Energy, subclass 253 for apparatus to irradiate
material within or on the earth, subclass 324 for the corona
irradiation of material or an object, subclasses 453.1+ for
apparatus to support an object for irradiation.
Subclass:
94
This subclass is indented under the class definition.
Apparatus in which sheets, webs or strands are dried while
spaced from one another or parts of a web are spaced from
other parts by means of spacer sheets, webs or strands.
(1) Note. Complete the search in this class, process
subclass 306, and see notes thereto.
SEE OR SEARCH CLASS:
101, Printing, subclass 417 and 419, for such devices
claiming no positive drying.
226, Advancing Material of Indeterminate Length, for other
sheet or web handling.
271, Sheet Feeding or Delivering, appropriate subclasses for
other sheet or web handling.
270, Sheet-Material Associating or Folding, particularly
subclass 58.01 .for other means for associating sheets, see
Class
Subclass:
95
This subclass is indented under the class definition.
Apparatus including means to remove liquids from the material
undergoing treatment by contacting the same with solid
material which removes the liquids by adsorption, absorption
or adhesion.
(1) Note. Where the absorption or adsorption means are
claimed, the patent is in this subclass or in subclass 71,
except external drums having absorbent or adsorbent belts or
felts (subclasses 116 and indented subclasses and 123) and
absorbent or adsorbent spacer sheets or webs (subclass 94).
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 and 329+.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, appropriate
subclasses for means for cleaning which may remove liquids by
brushing, wiping or squeegeeing; particularly subclass 21.1,
97.1+, 105, 147.1, and 159.1 and their indented subclasses;
208, 235, 245, and 250.001 and indented subclasses. Razor
blade driers designed to wipe as well as absorb are in Class
15, subclass 218.
30, Cutlery, subclass 537.
101, Printing, particularly subclasses 417-419, for contact
absorbers associated with a printing press.
206, Special Receptacle or Package, subclass 16 and 47 for
packages which may contain an absorption drier for blades.
248, Supports, subclass 504 for a desk pad; i.e., the desk
article with its overlying means to hold down an edge or
corner of a sheet other than a blotter.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses for a structurally defined web or sheet, or for a
coated or structurally defined fiber or filament or a mass of
such fibers or filaments which may be disclosed as useful for
contacting and thereby removing liquids from work, and see
especially subclass 304.4 for a plural layer web or sheet
having a component which is porous or cellular.
Subclass:
95.1
This subclass is indented under subclass 95. Apparatus
including means facilitating manual engagement thereof for
transportation to, contact with, and removal from the
material to be dried.
(1) Note. The means facilitating handling may be a mere,
stiffening insert.
(2) Note. Apparatus which is so manipulated that the
work-contacting face (e.g., the cylindrical face of indented
subclass 95.3 or the arcuate face of subclass 95.4) wipes a
work surface by being drawn there across, will be placed in
Class 15, Brushing, Scrubbing, and General Cleaning, in
accordance with (4) Note in principal subclass 95.
SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Articles, appropriate
subclasses for a blotter which is mere stock material, and
see especially subclass 311.11 and 357+.
Subclass:
95.2
This subclass is indented under subclass 95.1. Apparatus
wherein the means facilitating manual engagement is adapted
to be secured to the hand.
Subclass:
95.3
This subclass is indented under subclass 95.1. Apparatus in
which the solid material for removing liquids is arranged in
the form of a cylinder for rolling contact with a work
surface so that any point therein can contact a point only of
said surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
89.1 for a rolling-contact blotter attachment for a pen.
Subclass:
95.4
This subclass is indented under subclass 95.1. Apparatus in
which the solid material for removing liquids is arranged to
provide an arcuate work-contacting surface, whereby the
apparatus is capable of arcuate oscillation so that any point
thereon can contact a point only of the work surface.
Subclass:
96
This subclass is indented under the class definition.
Apparatus coming including means specialized to dry the hair
on the human head.
(1) Note. For hair drying processes, see the search notes
below. All apparatus disclosures have been cross-referenced
to appropriate apparatus subclasses.
(2) Note. This subclass and the indented subclasses do not
include mere hot air blowers for which see other appropriate
class noted below. Also see (1) Note to subclass 97 of this
class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 73+ for apparatus in this class for treating
gases or vapors by vapor condensation.
subclasses 80+ for apparatus in this class for treating
gases or vapors by absorption.
283 for hair drying processes.
SEE OR SEARCH CLASS:
2, Apparel, particularly subclass 174 .or shields, not
attached to the hair drying hood, for the face and other
parts of the body.
15, Brushing, Scrubbing, and General Cleaning, subclass 160
for heated brushes.
126, Stoves and Furnaces, subclass 99 and indented
subclasses, for hot air blowers including combustion means
for indirectly heating the air.
132, Toilet, subclass 14.
132, Toilet, for a hair dryer combined with other means for
treating the hair, see particularly subclasses 227+ for
curlers combined with heaters, and subclass 271 for a dryer
combined with a brush.
165, Heat Exchange, subclasses 122+ .or an encased blower
moving air through a heat exchanger.
219, Electric Heating, appropriate subclasses, especially
subclasses 280+ for means for heating gases by
electricity.
237, Heating Systems, particularly subclass 50 and indented
subclasses for heating systems adapted to distribute a
heating fluid to a plurality of points but not claiming means
specialized for hair drying.
604, Surgery, for hair driers including means to medicate the
hair, subclass 23 and 291 for hair dryers including hair
medicating.
Subclass:
97
This subclass is indented under subclass 96. Apparatus
including means to circulate a gas or vapor in contact with
the hair.
(1) Note. For hand driers and miscellaneous blowers and
distributors, see this class, subclass 202.
(2) Note. For a gas or vapor hair dryer combined with other
means for treating the hair, see Class 132 Toilet,
particularly subclass 228 for those combined with a curler,
and subclass 271 for those combined with a brush.
(3) Note. For a gas or vapor hair dryer combined with other
treating means, see Class 132 Toilet, particularly subclass
228 for those combined with a curler, and subclass 271 for
those combined with a brush.
SEE OR SEARCH CLASS:
219, Electric Heating, subclasses 369+, for mere blowers plus
electrical heating means.
Subclass:
98
This subclass is indented under subclass 97. Apparatus
including a plurality of gas or vapor distributing units.
(1) Note. See (6) Note to subclass 96 of this class.
Subclass:
99
This subclass is indented under subclass 97. Apparatus
including a distributor unit conforming to the shape of the
head. Usually this is a hood or ducts fitting around the
head.
Subclass:
100
This subclass is indented under subclass 99. Apparatus
including means to recirculate the treating gas or vapor.
(1) Note. For other subclasses involving gas or vapor
recirculation see (1) Note to subclass 219 of this class.
Subclass:
101
This subclass is indented under subclass 97. Apparatus
including means to support the hair, such as racks or
supports.
(1) Note. Complete the search in this class, subclass 96 for
hair supports not provided with means to circulate a gas or
vapor into contact with the hair.
SEE OR SEARCH THIS CLASS, SUBCLASS:
239 of this class.
Subclass:
102
This subclass is indented under the class definition.
Apparatus having means to recirculate the treated material in
whole or part through the material treating zone or through a
part of such zone.
SEE OR SEARCH THIS CLASS, SUBCLASS:
95 for means to recirculate solids which contact the
material undergoing treatment to dry the same.
subclasses 376+ for corresponding processes.
subclasses 576+ for fluid current type driers provided with
material recirculating means, and see notes.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 580 for plural
conveyors arranged to recycle all or a portion of the
conveyed load on a closed path, and subclass 720 for a pusher
conveyor having the same arrangement.
Subclass:
103
This subclass is indented under the class definition.
Apparatus in which the article is held on or in forms, and
forms not otherwise provided for.
(1) Note. Complete the search in this class, process
subclasses 437+ and see the notes thereto.
(2) Note. Hollow articles held on mandrels inserted in the
hollow are in this class, subclass 104 and indented
subclasses.
(3) Note. Patents for treating articles while held between
pressing members or platens are not here but in subclass 143
and indented subclasses of this class.
(4) Note. The line between the patents in this class and
Class 223, Apparel Apparatus is: Class 223 takes all patents
claiming features of a form to fit or hold a garment. Class
34 takes patents claiming forms by name only as "forms",
"flat forms", "garment forms", "boards", or a particular
named garment as "stocking forms", where no features of the
form except such designation by name are claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
151 and 163, for means for holding sheets, webs or strands.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 803.3 and 867.01+
others for a conveyor having a load holder.
Subclass:
104
This subclass is indented under the class definition.
Apparatus restricted to operating on hollow articles.
(1) Note. The patents on apparatus for hollow articles
include means for introducing and/or withdrawing from the
interior of the article either the treating medium or the
means for handling the article. Apparatus restricted to
treating hollow cakes or bobbins of strands is in this
subclass or indented subclasses.
(2) Note. Devices of more general application claiming a
hollow article by name only are classified in appropriate
subclasses below, for instance, racks for hose or strands,
for which see subclasses 151 and appropriate indented
subclasses, and 239.
(3) Note. For gas or vapor delivery means insertable into
bulk material, search this class, subclass 243 and Class 454,
Ventilation, subclasses 175+.
(4) Note. Complete the search in this class, apparatus
subclass 103 and process subclasses 437+, and see the notes
thereto.
(5) Note. See this class, subclass 202 where articles,
particularly shoes, are inserted into openings in a treating
chamber.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, subclasses 150+ and
451.
12, Boot and Shoe Making, appropriate subclasses for forms
inserted in shoes, and particularly subclass 129.4 for
heated forms.
68, Textiles: Fluid Treating Apparatus, subclass 150.
427, Coating Processes, subclasses 230+ for processes of
coating the interior of a hollow article.
432, Heating, subclass 224 for an in an inserted emitter
type of hollow article interior heater.
Subclass:
105
This subclass is indented under subclass 104. Apparatus
including means to move the articles from one point to
another during treatment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
103
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 388 and 803.12 for a
conveyor having means contacting the interior of a hollow
load.
Subclass:
106
This subclass is indented under subclass 104. Apparatus
having means to suspend hollow articles and means to hold the
bottom portion thereof.
(1) Note. Most of the patents herein are clothes driers with
means for driving a gas up through the garment thus causing
inflation and drying.
Subclass:
107
This subclass is indented under the class definition.
Apparatus including means specially designed for holding or
handling slender substantially rigid articles, such as rods.
SEE OR SEARCH THIS CLASS, SUBCLASS:
104 and indented subclasses, for apparatus restricted to
hollow articles.
subclasses 148+ for treating and handling of flexible
material.
SEE OR SEARCH CLASS:
211, Supports: Racks, subclass 60.1 for racks for slender
articles.
Subclass:
108
This subclass is indented under the class definition.
Apparatus including a hollow drum or receptacle member
through, over, by, or in which the material is carried to be
treated and rotating about an axis.
(1) Note. Usually the axis coincides with the axis of the
drum or receptacle. The member is usually, but not always,
circular in cross section.
(2) Note. Drums and rollers that are mere conveyor guides or
in themselves are mere conveyors or material feeders are not
here but in other subclasses appropriate to the type of
apparatus.
(3) Note. For drums with inspection or sampling means, see
this class, subclasses 88 and 89.
(4) Note. For drums using both internal and external
surfaces for the solid material undergoing treatment, see
this class, subclass 68.
(5) Note. For additional classes and subclasses involving
rotary drums or receptacles see the search notes below
referencing this (5) Note.
SEE OR SEARCH THIS CLASS, SUBCLASS:
184 and indented subclasses, for rotary carriers or racks.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 75
and 90. (see (5) Note above)
55, Gas Separation, subclass 290, 354 and 400. (see (5) Note
above)
68, Textiles: Fluid Treating Apparatus, particularly subclass
16, 20, 58, and 139+. (see (5) Note above)
69, Leather Manufactures, subclass 30. (see (5) Note above)
99, Foods and Beverages: Apparatus, subclass 323.9, for
rotary drum cereal poppers: subclass 443, and see note II
thereto, for movable food supports; and subclass 630, for a
rotary container with skin removal means. (see (5) Note
above)
110, Furnaces, subclass 226. (see (5) Note above)
131, Tobacco, subclass 305. (see (5) Note above)
134, Cleaning and Liquid Contact With Solids. (see (5) Note
above)
159, Concentrating Evaporators, subclass 9.2, 10-12. (see (5)
Note above)
165, Heat Exchange, subclasses 89+. (see (5) Note above)
198, Conveyors: Power-Driven, subclass 658. (see (5) Note
above)
201, Distillation: Processes, Thermolytic, appropriate
subclass for a process of carbonizing carbonaceous material.
(see (5) Note above)
202, Distillation: Apparatus, particularly subclass 100, 131,
136, 216, 218, and 238. (see (5) Note above)
209, Classifying, Separating, and Assorting Solids, subclass
238, 288 and indented subclasses, particularly subclass 295.
(see (5) Note above)
210, Liquid Purification or Separation, subclasses 210+, 217,
297, 326, 360.1+, 384+, 385, 391+, and 402+. (see (5) Note
above)
241, Solid Material Comminution or Disintegration, subclass
54, 70+, 91, 137, 153, and 176+. (see (5) Note above)
366, Agitating, subclasses 22+ for a heating or drying
mortar mixing chamber, and subclasses 54+ and 220+ for
rotatable mixing chambers having no claimed drying or gas or
vapor contact means.
384, Bearings, subclass 549 for a fixed supporting roller.
(see (5) Note above)
404, Road Structure, Process, or Apparatus, subclasses 83+.
(see (5) Note above)
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, appropriate
subclasses 209+. (see (5) Note above)
435, Chemistry: Molecular Biology and Microbiology, subclass
303 and 312. (see (5) Note above)
451, Abrading, subclass 106 and 326+ and indented
subclasses. (see (5) Note above)
432, Heating, subclasses 103+ for a residual tumbler type
rotary furnace.
Subclass:
109
This subclass is indented under subclass 108. Apparatus in
which the material is carried in two or more distinct
compartments.
(1) Note. The pocketed or compartmented type is
distinguished by the fact that the material is fed to and
discharged from at least two distinct pockets or compartments
separately.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127 and indented, subclasses for plural internal drums or
receptacles.
184 and 614+, and indented subclasses.
Subclass:
110
This subclass is indented under subclass 108. Apparatus in
which the material is carried on the outside surface of a
rotary treating drum.
(1) Note. This subclass includes among other structure not
provided for below, drum mounting or driving means, drum
structure and drums heated other than by exchange fluids.
SEE OR SEARCH THIS CLASS, SUBCLASS:
611 and indented subclasses, subclass 625 for sheet, web or
strand driers not of the external drum type.
SEE OR SEARCH CLASS:
38, Textiles: Ironing or Smoothing, appropriate subclasses
for external rotary drum textile ironers or smoothers.
198, Conveyors: Power-Driven, appropriate subclasses for
rotary conveyors, particularly subclass 608, 611+ and
803.16.
432, Heating, subclass 228 for an internally heated work
supporting roll.
Subclass:
111
This subclass is indented under subclass 110. Apparatus
having belts or felts as defined in subclass 116 and also
means to dry such belts or felts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 95+ and 329+, for processes or means to dry material by
contact with solid matter including means to dry the solid
matter, and see notes to these subclasses.
90 for driers combined with other features.
subclasses 116+ and 123.
SEE OR SEARCH CLASS:
432, Heating, subclass 59 for a residual heater including an
internally heated roll flexing, looping or coiling a sheet,
web or strand.
Subclass:
112
This subclass is indented under subclass 110. Apparatus
including a hopper feeding means or distinct article securing
means.
(1) Note. For drums including material retaining belts or
felts, see this class, subclasses 111, 116 and 123.
Subclass:
113
This subclass is indented under subclass 110. Apparatus in
which two or more drums of the external type are claimed in
combination.
Subclass:
114
This subclass is indented under subclass 113. Apparatus
including means to contact the solids undergoing treatment
with a gas or vapor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
117 where the sheet web or strand is fed through the drum
assembly by fluid (usually air) blasts.
122 for single drums having this combination.
Subclass:
115
This subclass is indented under subclass 114. Apparatus in
which the treating fluid is passed through the treated
material and/or through the drum surface.
Subclass:
116
This subclass is indented under subclass 113. Apparatus in
which belts or felts are provided for holding the material
against the drum or against an intermediate belt or felt
which contacts the drum.
SEE OR SEARCH THIS CLASS, SUBCLASS:
123 and in subclass 111, for belt or felt driers, and see
the notes thereto.
523 for belts or felts, per se.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 688.1 for means for
holding a conveyed load against its conveyor, and subclasses
604+ and 620+ for opposed, load gripping conveyors.
Subclass:
117
This subclass is indented under subclass 116. Apparatus in
which means to strip the material from the drums or to guide
or thread it through the drum assembly are provided.
(1) Note. Complete the search in this class, subclass 120
for such devices without belts, and see notes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85 for apparatus cleaners.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclasses 367+, 370.07 through
370.09, 370.1, 370.11 through 370.13, 426+, 463.1, 497, 597+,
599, 637, and others for means for moving an article or
material off a conveyor.
Subclass:
118
This subclass is indented under subclass 116. Apparatus in
which there is a tightener for the belt or belts.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 709 and 813+ for
conveyor belt tighteners.
242, Winding, Tensioning, or Guiding, subclasses 410+ and
147+ for tensioning a running length of elongated material.
Subclass:
119
This subclass is indented under subclass 113. Apparatus
including means to supply and/or remove the heat exchange
fluids from the drums.
(1) Note. While some of the patents included here include
nonautomatic means to control the pressure throughout the
drums, such as restrictions in the feed or discharge lines,
this subclass does not include means responsive to a
condition to be controlled to actuate a condition controlling
means. Complete the search in this class, subclasses 524+ and
indented subclasses, particularly subclasses 549+ and 556,
which contain such devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
124 and 125, for single drums.
SEE OR SEARCH CLASS:
237, Heating Systems, subclass 67 and 68 for steam heating
systems.
Subclass:
120
This subclass is indented under subclass 113. Apparatus
including means to strip the material from the drums or to
thread, or guide the material through the drum assembly.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85 for apparatus cleaners.
117 for such devices with belts.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclasses 367+, 370.07 through
370.09, 370.1, 370.11 through 370.13, 426+, 463.1, 497, 597+,
599, 637, and others for means for moving an article or
material off a conveyor.
226, Advancing Material of Indeterminate Length, appropriate
subclasses for methods of, and apparatus for, feeding
material without utilizing the leading or trailing ends to
effect movement of the material.
254, Implements or Apparatus for Applying Pushing or Pulling
Force, subclasses 389+.
474, Endless Belt Power Transmission Systems or Components,
appropriate subclasses for a device for guiding or driving an
endless belt in a power transmission.
Subclass:
121
This subclass is indented under subclass 113. Apparatus
including drum mounting and/or driving means.
(1) Note. See Class 475, Planetary Gear Transmission Systems
or Components, appropriate subclasses, for plural loads
driven by planetary gearing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
113 for plural drum arrangements where the drum mounting or
drive is conventional.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, appropriate subclasses,
particularly subclass 650 and 665+.
Subclass:
122
This subclass is indented under subclass 110. Apparatus
including means to contact the solids with a gas or vapor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
114 and 115.
Subclass:
123
This subclass is indented under subclass 110. Apparatus in
which belts or felts as defined in subclass 116 are used.
SEE OR SEARCH THIS CLASS, SUBCLASS:
111
SEE OR SEARCH CLASS:
162, Paper Making and Fiber Liberation, subclass 358.1 for
press roll couples having a belt or felt for conveying a
moist fibrous web therethrough.
198, Conveyors: Power-Driven, subclasses 688+ for means for
holding a conveyed load against its conveyor, and subclasses
604+ and 620+ for opposed, load gripping conveyors.
Subclass:
124
This subclass is indented under subclass 110. Apparatus
including means to supply and remove the heat exchange
fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
119 for plural drums.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclasses 89+ for a rotary drum heat
exchanger.
285, Pipe Joints or Couplings, particularly subclass 120.1
especially subclasses 121.3+, for the coupling means, per se.
See the Search Notes thereunder.
Subclass:
125
This subclass is indented under subclass 124. Apparatus
claiming only means to remove the heat exchange fluid.
(1) Note. These devices are mainly for handling the
condensed steam.
SEE OR SEARCH CLASS:
137, Fluid Handling, subclasses 123+ for siphons, and
subclasses 171+ for traps for separating condensate from
steam, or any two diverse fluids.
Subclass:
126
This subclass is indented under subclass 108. Apparatus in
which means are provided for moving the drum or receptacle in
some manner in addition to the rotary motion of the drums.
For instance, the entire assembly may be mounted on wheels,
the drums may be conveyed as by chains, roll down tracks or
moved by other means including means to adjust the position
of the drum bearings, and drums mounted for rotation about an
axis other than the axis of rotation of the drum or
receptacle.
(1) Note. Mere motion of the drum or receptacle to cause
feeding and/or discharging of the material treated is placed
with the appropriate apparatus groups below.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 861.1 for an
adjustable conveyor frame.
Subclass:
127
This subclass is indented under subclass 108. Apparatus
including a plurality of drums through or into which material
undergoing treatment is passed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
109 for plural compartment drums.
126 for plural translating drums.
Subclass:
128
This subclass is indented under subclass 127. Apparatus
including a plurality of drums nested one within another. The
material usually passes from one drum to another in a zigzag
path.
Subclass:
129
This subclass is indented under subclass 127. Apparatus
including means to feed material from one drum to another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
128 for nested rotary drums or receptacles.
subclasses 135+ 141 and 142, for other drums or receptacles
in which the material moves through the drum or receptacle.
subclasses 165+ and indented subclasses, for gravity feed
type driers.
Subclass:
130
This subclass is indented under subclass 108. Apparatus
including means to contact the material undergoing treatment
with a gas or vapor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
140 and 141, for drums or receptacles having foraminous
walls which act only to vent gases or vapors.
Subclass:
131
This subclass is indented under subclass 130. Apparatus
including means to recirculate the treating gas or vapor.
(1) Note. See (1) Note to subclass 219 of this class for
other subclasses involving gas or vapor recirculation.
Subclass:
132
This subclass is indented under subclass 130. Apparatus
including heating means for either, or both, (1) the treating
gas or vapor, or (2) the material undergoing treatment.
(1) Note. Such means may include gas or vapor conducting
conduits which act to heat as well as conduct gases and/or
vapors into the apparatus, for which see this class, subclass
134 and notes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
131 for the subject matter provided for in this subclass,
plus recirculation of the treating gas or vapor.
Subclass:
134
This subclass is indented under subclass 132. Apparatus in
which either or both, (1) indirect heat exchange conduits, or
(2) conduits for conducting the treating gas or vapor are
located within the drum or receptacle.
(1) Note. The conduits may be part of or attached to the
drum or receptacle walls.
(2) Note. For other treating gas or vapor conduits without
heating means, search this class, subclass 138.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 280+
Subclass:
135
This subclass is indented under subclass 130. Apparatus of
the type in which the material to be treated is introduced
into one end of the drum or receptacle, travels along the
interior in the direction of the axis of rotation, and is
discharged from the other end.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127 and indented subclasses.
134 for the subject matter there provided for, including
axial material flow.
Subclass:
136
This subclass is indented under subclass 135. Apparatus in
which the gas or vapor that contacts the material is
introduced into and discharged from the same ends as the
treated material, i.e., the directions of flow of the
material being treated and the treating gas and/or vapors are
the same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
135 for this character of gas or vapor flow combined with
other characters of flow.
Subclass:
137
This subclass is indented under subclass 135. Apparatus in
which the gas or vapor that contacts the material is
introduced at the material discharge end and is discharged at
the material feed end, i.e., the directions of flow of the
material being treated and the treating gas and/or vapor are
opposite.
SEE OR SEARCH THIS CLASS, SUBCLASS:
135 for this character of gas or vapor flow combined with
other characters of flow.
Subclass:
138
This subclass is indented under subclass 130. Apparatus
wherein conduits for conducting the treating gas or vapor for
contact with the material undergoing treatment are located
within the drum or receptacle.
(1) Note. The conduits may be part of or attached to the
drum walls.
SEE OR SEARCH THIS CLASS, SUBCLASS:
134 and 280+.
Subclass:
139
This subclass is indented under subclass 130. Apparatus in
which the drum or receptacle is totally or partially enclosed
in a housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
135 through 138, for the subject matter there provided for
plus enclosing housings.
subclasses 595+ for such housings combined with heating
means, and in subclass 131.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 860.1 for a conveyor
casing.
Subclass:
140
This subclass is indented under subclass 108. Apparatus
having means to exhaust the gases or vapors generated or
evolved from the solid material undergoing treatment.
(1) Note. Exhaust means does not include an open end but
does include foraminous walls.
Subclass:
141
This subclass is indented under subclass 140. Apparatus
having treated material feed therethrough as defined in
subclass 135.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127 and indented subclasses.
Subclass:
142
This subclass is indented under subclass 108. Apparatus
having treated material feed therethrough as defined in
subclass 135.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127 and indented subclasses.
Subclass:
143
This subclass is indented under the class definition.
Apparatus in which the material to be treated is held between
two opposed members which are movable or expansible towards
one another to press or retain the material, and away from
each to release the material. Usually at least one member is
a fixed bed supporting the material.
(1) Note. Opposed conveying, feeding or discharging means
which may apply pressure to the material conveyed are not
here, but are with the appropriate type of apparatus; see
particularly subclasses 110+, for external drum type, and the
various subclasses under subclasses 201+, particularly
subclasses 203+.
(2) Note. For devices wherein an absorbent member claimed as
such contacts an article to be dried, see this class,
subclasses 95+ and for other drying combined with absorbing,
see subclass 71 and for spacing sheets or webs by alternate
spacer sheets or webs, see subclass 94.
(3) Note. For driers combined with expressing or wringing,
see this class, subclass 70.
(4) Note. For textile washing and wringing presses, see
Class 68, Textiles: Fluid Treating Apparatus, particularly
subclasses 94 and 241 and their indented subclasses.
(5) Note. For baling, expressing, copying, packing, and
bundling presses, see Class 100, Presses, particularly
subclasses 211+ for presses having a flexible or deformable
pressure surface, and subclasses 214+ for reciprocating
platen presses not elsewhere provided for.
(6) Note. For similar treating presses, see Class 144,
Woodworking, subclasses 256.1+.
(7) Note. For heat exchanger platens, per se, see Class 165,
Heat Exchange, subclasses 168+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 437+ for processes involving drying on forms.
SEE OR SEARCH CLASS:
38, Textiles: Ironing or Smoothing, appropriate subclasses.
162, Paper Making and Fiber Liberation, subclasses 377+ for
apparatus for making articles from fibrous pulp wherein a
heated die is employed.
425, Plastic Article or Earthenware Shaping or Treating:
Apparatus, appropriate subclasses for a molding press for
plastic product manufacturing, especially subclasses 363+
for a press couple including an endless surface, subclasses
394+ for a press type preform reshaping or vulcanizing means,
and subclasses 406+ for a press couple forming apparatus; see
the search notes under the above identified subclasses.
Subclass:
144
This subclass is indented under subclass 143. Apparatus
including a plurality of press couples. These may constitute
single or plural machines.
(1) Note. For other means for feeding material in plural
independent paths, see this class, subclass 205.
SEE OR SEARCH CLASS:
100, Presses, subclasses 193+ for plural presses not
elsewhere provided for.
Subclass:
145
This subclass is indented under subclass 143. Apparatus
including means to pass a gas or vapor into contact with the
material treated.
(1) Note. Presses with heated vented platens or presses
having heated platens which separate to allow gas or vapor
circulation (breathing) are not classified here but in other
appropriate subclasses in this group.
SEE OR SEARCH CLASS:
100, Presses, subclasses 92+ for presses, not elsewhere
provided for, having means to heat, cool or dry the material
pressed.
Subclass:
146
This subclass is indented under subclass 143. Apparatus in
which the pressing members, of nonplanar form are shaped to
hold a solid to be treated. Many of these are matrix driers.
Subclass:
147
This subclass is indented under the class definition.
Apparatus in which the material undergoing treatment travels
in a generally spiral or helical path.
(1) Note. For the most part the material moves by gravity,
sliding down a spiral guide or being carried on supports
which move along a spiral path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
165 and indented subclasses, for shafts for material moving
downwardly by gravity in various irregular paths.
SEE OR SEARCH CLASS:
193, Conveyors, Chutes, Skids, Guides, and Ways, subclass 12
and 13.
198, Conveyors: Power-Driven, subclasses 657+ and 778 and
indented subclasses.
Subclass:
164
This subclass is indented under the class definition.
Apparatus including means to vibrate supports for material
undergoing treatment, thus vibrating the material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85 for apparatus including means to strike the apparatus to
loosen the material or deposits.
172 and 178, for gravity feed from shelf to shelf, the
shelves not vibrating.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclasses 86+.
198, Conveyors: Power-Driven, subclass 631, and 752+ for a
vibrating conveyor.
Subclass:
165
This subclass is indented under the class definition.
Apparatus in which material is fed in at an elevated level
and flows generally downward through the treating zone or
from one treating zone to another at least in part by
gravity.
(1) Note. This subclass and the indented subclasses do not
include plural conveyors feeding one to another usually by
gravity, for which see this class, subclass 203 and indented
subclasses, nor conveyors or cars which carry the material,
the material not flowing, for which see subclasses 194, and
201 and indented subclasses, particularly subclasses 215,
216, 227, and 228.
SEE OR SEARCH THIS CLASS, SUBCLASS:
58 and 59, for apparatus involving centrifugal force,
subclass 164, for material vibrating type, and subclass 147,
for spiral path type.
subclasses 64+ for devices here provided for plus cooler or
cooling sections.
SEE OR SEARCH CLASS:
159, Concentrating Evaporators, subclass 13 and 15.
165, Heat Exchange, subclass 93.
198, Conveyors: Power-Driven, subclass 311, 359+ and 523+.
202, Distillation: Apparatus, subclass 221.
432, Heating, subclasses 95+ for a residual gravity flow
shaft type material heater.
Subclass:
166
This subclass is indented under subclass 165. Apparatus
having two or more troughs and/or tubes having therein
agitators or conveyors rotating about and extending along the
axis of the troughs or tubes.
(1) Note. The gravity flow is usually from one trough or
tube to the next.
(2) Note. Complete the search in this class, subclasses 180,
182 and 183, for other axial feed apparatus where there is no
gravity feed from one trough or tube to another, and see the
notes to subclass 179.
Subclass:
167
This subclass is indented under subclass 165. Apparatus
having two or more separate gravity feed paths and either, or
both, (1) two or more separate feeding means to two or more
of such paths, or (2) two or more separate discharge means
from two or more of such paths.
(1) Note. There may be a nongravity feed from one such path
to a second, i.e., series arrangements with nongravity feed
therebetween.
(2) Note. For plural gravity feed paths with single feed and
discharge, see other appropriate subclasses of this group.
Subclass:
168
This subclass is indented under subclass 165. Apparatus
including means to contact the material treated with a
treating gas or vapor.
Subclass:
169
This subclass is indented under subclass 168. Apparatus
including pro- vision for recirculating the treating gas or
vapor in whole or part.
(1) Note. See (1) Note to subclass 219 of this class for
other subclasses involving recirculation of the treating gas
or vapor.
Subclass:
170
This subclass is indented under subclass 168. Apparatus in
which the treating gas or vapor is distributed into contact
with the material by imperforate members of generally
inverted "V" or "U" configuration.
Subclass:
171
This subclass is indented under subclass 168. Apparatus in
which there is either, or both, (1) arrangement for dropping
material from one shelf member to a lower shelf member, or
(2) plural baffle members forming a tortuous or zigzag course
for the material being treated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
164 for vibrating shelves.
178 for such structure without gas or vapor contact means.
211 for superposed floors where no means for gravity flow
are claimed.
SEE OR SEARCH CLASS:
366, Agitating, subclasses 336+ for baffles in a stationary
mixing chamber.
432, Heating, subclasses 130+, for a material heater of the
shelf-to-shelf type having combustion products generating
structure.
Subclass:
172
This subclass is indented under subclass 171. Apparatus
involving dumping shelves or pockets which oscillate or
rotate about a horizontal axis for dumping the material from
an upper to a lower level.
SEE OR SEARCH THIS CLASS, SUBCLASS:
194 for means for dumping removable shelves or trays.
237 for dumping floors, per se.
Subclass:
173
This subclass is indented under subclass 171. Apparatus
including shelves and/or stirrers that rotate or revolve
about a substantially vertical axis.
(1) Note. The stirrer blades are usually arranged at an
angle to move the material towards the discharge which may be
radial openings in the shelves or openings at the edges or
center.
(2) Note. Complete the search in this class, subclasses
179+, for stationary receptacle with agitator and conveyor,
and in subclass 185, for revolving or swinging carrier with
discharging scrapers.
SEE OR SEARCH CLASS:
366, Agitating, appropriate subclasses, particularly
subclasses 279+, and 432, Heating, subclass 131 for a
shelf-to-shelf material heater having a rotary pusher and
combustion products generating structure.
Subclass:
174
This subclass is indented under subclass 168. Apparatus
including ducts or walls provided with a plurality of
openings for the purpose of distributing the treating gas or
vapor into contact with the material treated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
168 for the subjects matter there provided for, including
foraminous walls.
175 for heating by radiation and conduction plus venting
means including foraminous walls.
225 and 233.
SEE OR SEARCH CLASS:
454, Ventilation, subclasses 174+.
Subclass:
175
This subclass is indented under subclass 165. Apparatus
including means to vent the gases or vapors given off by the
material treated.
(1) Note. Venting means does not include an open top.
SEE OR SEARCH THIS CLASS, SUBCLASS:
140 and 235.
Subclass:
176
This subclass is indented under subclass 165. Apparatus in
which the material moves through tubes.
Subclass:
177
This subclass is indented under subclass 165. Apparatus
including in- direct heat exchange tubes for the material
being treated.
(1) Note. Complete the search for combined material and
heating tubes in this class, subclass 176.
Subclass:
178
This subclass is indented under subclass 165. Apparatus
having shelf to shelf or zigzag structure as defined in
subclass 171.
(1) Note. Notes to subclass 171 and indented subclasses
apply here.
Subclass:
179
This subclass is indented under the class definition.
Apparatus including a stationary receptacle or tube that
receives and holds the material undergoing treatment in
contact with at least the receptacle or tube bottom, and has
either, or both, (1) an agitator for the material within the
receptacle or tube, or (2) a conveyor (other than an endless
conveyor); see note (3) for causing the material to move in
the receptacle or tube.
(1) Note. Complete the search in this class, subclasses 280+
for the type of apparatus classified in this subclass, and
the indented subclasses, disclosed for treating feathers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 165+ particularly subclass 166, for such devices
in which the agitators or conveyors are vertically spaced so
that the material undergoing treatment moves by gravity from
one to another. Subclass 166 consists of plural apparatus
similar to those classified in this subclasses (179+).
subclasses 201+ for houses, kilns or receptacles in which
the material does not contact the receptacle bottom, i.e.,
some conveyor or support for the material prevents contact
with the house, kiln or receptacle bottom. Also, as between
subclass 179, and subclasses 201+, all endless conveyors are
in subclasses 201+.
241
SEE OR SEARCH CLASS:
159, Concentrating Evaporators, subclasses 22+ and 32+.
165, Heat Exchange, subclass 94 for a scraper removing a
product from a heat exchange surface, subclass 109.1 for a
heat exchanger with agitator or stirrer, and subclass 120 for
an impeller or conveyor moving material through a heat
exchanger.
198, Conveyors: Power-Driven, subclasses 396+, 582 and 616.
366, Agitating, subclasses 241+.
Subclass:
180
This subclass is indented under subclass 179. Apparatus
including two or more of such means claimed in combination.
(2) Note. Complete the search in this class, subclass 166,
where there is gravity feed from one trough or tube to
another.
SEE OR SEARCH CLASS:
159, Concentrating Evaporators, subclasses 17+.
Subclass:
181
This subclass is indented under subclass 179. Apparatus
including means to contact the material undergoing treatment
with a gas or vapor.
SEE OR SEARCH CLASS:
432, Heating, subclass 139 for a heater in which material is
moved or agitated in a stationary receptacle to which
combustion products are fed from a combustion products
generator.
Subclass:
182
This subclass is indented under subclass 181. Apparatus in
which the material is introduced at one end, moves in the
direction of the receptacle or tube axis, and is discharged
at the other end.
SEE OR SEARCH THIS CLASS, SUBCLASS:
166 and 183.
Subclass:
183
This subclass is indented under subclass 179. Apparatus
having material feed of the type defined in subclass 182.
(1) Note. Complete the search in this class, subclasses 166
and 182.
Subclass:
184
This subclass is indented under the class definition.
Apparatus including means for carrying material and moving
about an axis, and not provided for above.
(1) Note. Search rotary drums or receptacles, particularly
subclass 109, for a hollow rotary member provided with
compartments or material supporting means even though such
means are removable or detachable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59 and 165+, particularly subclasses 171+ for means for
including rotary members such as shelves where the material
is caused by gravity to pass from shelf to shelf, and
subclass 147, where the material moves spirally.
103 for rotary members carrying forms.
150 and 163, and Classes 108, Horizontally Supported Planar
Surfaces, subclasses 20+ and 39; 198, Conveyors: Power-
Driven, subclasses 608, 611+, 803.16, and others; 211,
Supports: Racks, subclasses 1.5 and 163+ and 312, Supports:
Cabinet Structure, subclasses 125, 135, 252, 266, 267, and
305.
162 and 163, for rotary carriers peculiar to sheet, web or
strand material.
207 and 208, for conveyors moving in a rectilinear or
irregular plural path which may have material supporting
members mounted on pivots.
Subclass:
185
This subclass is indented under subclass 184. Apparatus
having either, or both (1) agitating means, or (2) a scraper
to cause discharge of the material undergoing treatment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85 for cleaning means.
173 and 178, for gravity material flow type.
Subclass:
186
This subclass is indented under subclass 184. Apparatus
including a plurality of separately movable carrier or rack
units. The units may themselves be mounted on a rotary
member.
(1) Note. Plural support elements mounted for motion
together as a single unit are not included in this subclass,
being classified in subclass 184 or the subclasses below.
(2) Note. See (4) Note to subclass 209 of this class for
other subclasses involving plural units or compartments.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 608, 624 and others
for plural rotating conveyors.
Subclass:
187
This subclass is indented under subclass 184. Apparatus
provided with means for causing a flow of treating gas or
vapor into contact with the material treated.
Subclass:
188
This subclass is indented under subclass 187. Apparatus (1)
provided with a member projecting from the rotary member,
usually a curved plate, and acting to force a flow of gas or
vapor over the material treated, or (2) in which the material
supports are suspended from the carrier as in a Ferris wheel,
or both (1) and (2).
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclasses 797+ for a load
elevating platform which remains level as it moves on an
orbital path.
Subclass:
189
This subclass is indented under the class definition.
Apparatus including mechanism acting to elevate or lower
material by gripping the material or supporting removable
material carriers, such as trays, so that the carriers may be
elevated or lowered during treatment or the mechanism may be
used to load or unload the apparatus, plus positive means to
treat the material. The trays or supports usually move
vertically and in superimposed relation.
(1) Note. See this class, subclass 612 for elevator
apparatus restricted to handling or treating sheet material.
If sheets are carried on trays adapted to carry other
material and the apparatus is not otherwise peculiar to sheet
handling, the patents are classified here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
94 and notes thereunder, for apparatus which may raise or
lower stacks of sheets.
147 for devices moving material spirally.
subclasses 165+ where the material moves at least partially
by gravity, i.e., falls freely through space.
194 and notes, for means for loading containers on fixed
floors, shelves or guides.
subclasses 203+ for devices feeding material from one
conveyor to another at different levels.
SEE OR SEARCH CLASS:
198, Conveyors: Power Driven, subclass 346.1 and appropriate
indented subclasses, 465.1, 604+, 625, 626+, 663, and 793+.
414, Material or Article Handling, subclasses 788+, 564, 589,
and 591.
Subclass:
190
This subclass is indented under subclass 189. Apparatus in
which the material supports are carried in two or more
elevator columns.
Subclass:
191
This subclass is indented under the class definition.
Apparatus having either, or both, (1) means to cause the
contact gas or vapor to pulsate, or (2) means to cause the
contact gas or vapor to flow into contact with the material
being treated first in one direction and then in an opposite
direction at the same place.
(1) Note. This subclass does not include those apparatuses
in which the treating gas or vapor flows in reverse
directions in different places, for which see this class,
subclasses 203+, 210 and other subclasses, particularly
subclasses 223, 224, 225, 226, 230, and 232.
SEE OR SEARCH THIS CLASS, SUBCLASS:
92 402+, and 558+, for sub- or superatmospheric treatment
including varying such pressures.
222 and 229, for movable gas distributors.
subclasses 463+ and notes, for processes involving gas or
vapor flow directing or control.
subclasses 562+ for such means combined with timing means,
and subclass 54 for automatic control of the flow of treating
gas or vapor.
SEE OR SEARCH CLASS:
417, Pumps, subclass 315 for reversible flow pumps.
Subclass:
192
This subclass is indented under the class definition.
Apparatus in which an enclosure or supporting means has means
providing for the insertion or removal of shelves, trays or
drawers from the enclosure or supporting means.
(1) Note. Such means may be, for example, guides or
supporting surfaces.
(2) Note. Complete the search in this class, subclasses
237+, and see notes, for container, drawer, tray, shelf, or
floor structure where the shelf, tray or drawer supporting or
enclosing means are not claimed, or for heated drying floors
or surfaces, per se.
SEE OR SEARCH THIS CLASS, SUBCLASS:
94 where sheets are spaced by loose spacer sheet or web even
though supported by shelves or trays.
subclasses 143+ for press type where the supporting members
are opposed and exert a pressing action.
subclasses 148+ for removable shelf or tray type apparatus
restricted to handling sheet material, particularly subclass
163.
149 189, and 190, for elevator type for shelves.
subclasses 165+ where the material goes from one level to
another by gravity.
subclasses 184+ for rotary carriers which may include
removable shelves or trays.
subclasses 201+ particularly subclass 211 for houses, kilns
and containers, including superposed floors, shelves or
chambers, where an arrangement for removable insertion of
shelves, trays, or drawers is not claimed.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 78 and 120.
312, Supports: Cabinet Structure, subclass 293 and 294+, for
cabinets having movable and removable components.
Subclass:
193
This subclass is indented under subclass 192. Apparatus in
which two or more of the removable shelf, tray or drawer
elements are arranged in other than vertical alignment.
Subclass:
194
This subclass is indented under subclass 192. Apparatus
including means for handling the trays or shelves except mere
guides on which the shelves or trays are supported.
(1) Note. Such means may be trucks on which the trays or
shelves are removably mounted, or other mechanical means
operating to insert or remove the same, but see and search
subclass 201, particularly subclasses 204, 207, 208, 215+,
216, 217, 227, and 228, for apparatus including tray handling
means, such as trucks, or conveyors, but no means providing
for the insertion or removal of shelves, trays or drawers are
claimed.
(2) Note. For dumping shelves in shaft type, see this class,
subclasses 172 and 178.
Subclass:
195
This subclass is indented under subclass 192. Apparatus
including means to contact the material treated with a
treating gas or vapor.
(1) Note. Complete the search for the subject matter
provided for in this subclass in subclasses 193 and 194.
Subject matter for the indented subclasses below is
cross-referenced from subclasses 193 and 194.
SEE OR SEARCH CLASS:
432, Heating, subclass 162 for a heating chamber in which
combustion products contact work material supported on a
shelf, rack, or tray on a guide or pivot and subclass 204 for
a work chamber in which heated air traverses material held on
a separable tray where the air is heated by a specific
combustion type heating means.
Subclass:
196
This subclass is indented under subclass 195. Apparatus
including means to recirculate the treating gas or vapor in
whole or part.
(1) Note. See (1) Note to subclass 219 of this class, for
search for gas or vapor recirculation.
Subclass:
197
This subclass is indented under subclass 195. Apparatus
including heating means for either, or both, (1) the treating
gas or vapor, or (2) the material treated.
Subclass:
198
This subclass is indented under subclass 197. Apparatus
having a liquid heater or vaporizer for supplying a heat
exchange heater.
(1) Note. See (2) and (3) Notes to subclass 192 of this
class.
Subclass:
199
This subclass is indented under subclass 195. Apparatus in
which the treating gas or vapor flows in a back-and-forth
path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
226 and see notes.
Subclass:
200
This subclass is indented under subclass 192. Apparatus
having a liquid heater as defined in subclass 198.
(1) Note. See (2) and (3) Notes to subclass 192 of this
class.
Subclass:
201
This subclass is indented under the class definition.
Apparatus including an enclosure which may be open on one
side (including the top side).
(1) Note. See this class, apparatus subclass 92 and notes,
for vacuum drying.
(2) Note. For other enclosures which are or may be used for
treating material, see classes in the search notes below
referencing this (2) Note.
SEE OR SEARCH THIS CLASS, SUBCLASS:
88 for enclosures with display, inspecting or illuminating
means, and see notes.
subclasses 192+ for removable shelf or tray type.
237 and 238, for floors or trays on which material is piled
but having no means other than a mere surrounding flange to
enclose the same. Such devices are not in this group unless
combined with additional means such as covers or walls to
enclose the material.
242 for material entrance seals including enough house, kiln
or container structure to cooperate with a seal, including
those seals in the form of a material transfer chamber.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, subclass 111.1 and
524+. (see (2) Note above)
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, subclasses 147+. (see
(2) Note above)
19, Textiles: Fiber Preparation, subclass 66. (see (2) Note
above)
26, Textiles: Cloth Finishing, subclass 3, 51, and 71+, and
their indented subclasses. (see (2) Note above)
44, Fuel and Related Composition, subclasses 630+. (see (2)
Note above)
47, Plant Husbandry, subclass 1.01 and 17. (see (2) Note
above)
48, Gas: Heating and Illuminating, subclass 62, 89, and 119
and their indented subclasses, 173 and 174+. (see (2) Note
above)
52, Static Structures (e.g., Buildings), appropriate
subclasses. (see (2) Note above)
62, Refrigeration, appropriate subclasses. (see (2) Note
above)
65, Glass Manufacturing, appropriate subclasses, especially
subclasses 349+ for glass annealing or tempering furnaces.
(see (2) Note above)
68, Textiles: Fluid Treating Apparatus, particularly
subclasses 5+, 18, and 20. (see (2) Note above)
71, Chemistry: Fertilizers, subclass 64.01. (see (2) Note
above)
72, Metal Deforming, appropriate subclasses. (see (2) Note
above)
99, Foods and Beverages: Apparatus, subclass 451. (see (2)
Note above)
110, Furnaces, subclasses 235+. (see (2) Note above)
119, Animal Husbandry, subclasses 302+ and 311+. (see (2)
Note above)
126, Stoves and Furnaces, appropriate subclasses. (see (2)
Note above)
131, Tobacco, subclasses 300+. (see (2) Note above)
134, Cleaning and Liquid Contact With Solids. (see (2) Note
above)
159, Concentrating Evaporators, subclasses 17+ and 22+.
(see (2) Note above)
164, Metal Founding, appropriate subclasses. (see (2) Note
above)
165, Heat Exchange, subclasses 72+ for a heat exchanger
with a removable cover for an access opening, and subclass
169 for an enclosure formed by attempering wall means. (see
(2) Note above)
198, Conveyors: Power-Driven, subclass 861.1. (see (2) Note
above)
202, Distillation: Apparatus, appropriate subclasses for
kilns. (see (2) Note above)
237, Heating Systems, appropriate subclasses; see
particularly subclass 48 and 53 for tobacco barns where the
tobacco holding or handling means are not claimed. (see (2)
Note above)
266, Metallurgical Apparatus, subclasses 168+, for apparatus
for treating an ore by contacting it with a gas while there
is contained in an enclosure and subclasses 250+, for means
for contacting a solid metal object with a gas while the
object is enclosed in a housing. (see (2) Note above)
312, Supports: Cabinet Structure, subclass 213, for
ventilated wall cabinets, and subclass 236, for cabinets with
heat exchange means. (see (2) Note above)
356, Optics: Measuring and Testing, subclasses 36+ for the
preparation of a material for an optical test. (see (2) Note
above)
373, Industrial Electric Heating Furnaces, appropriate
subclasses. (see (2) Note above)
396, Photography, subclasses 564+ for photos:graphic
fluid-treating which may include drying. (see (2) Note
above)
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, appropriate
subclasses. (see (2) Note above)
432, Heating, subclasses 120+, for a residual work chamber
having heating means. (see (2) Note above)
435, Chemistry: Molecular Biology and Microbiology,
subclasses 283+ and 291+. (see (2) Note above)
454, Ventilation, for the ventilation subcombination,
particularly subclasses 173+, for ventilated storage
chambers. (see (2) Note above)
607, Surgery: Light, Thermal, and Electrical Application,
subclasses 1+, particularly subclasses 81+. (see (2) Note
above)
Subclass:
202
This subclass is indented under subclass 201. Apparatus
including structure forming an enclosure having one or more
openings or an open front through which an article is
partially inserted to project into the enclosure and be
treated as by a gas or vapor or by heat. Many of these
patents are devices for treating the toes or soles of shoes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
104 and indented subclasses, for apparatus restricted to
hollow article drying.
SEE OR SEARCH CLASS:
12, Boot and Shoe Making, subclass 1, and see the reference
to Class 12 in the main class definition, (2) Note, of this
class.
Subclass:
203
This subclass is indented under subclass 201. Apparatus
including conveyors for transporting material in plural or
zigzag paths.
(1) Note. The above definition excludes the mere handling of
material as by supports, trucks, tracks, or trays where no
mechanical means are provided for causing the material to be
conveyed while within the house, kiln or container.
(2) Note. Complete the search in this class, subclasses 646,
647, and 657, which include plural run conveyors peculiar to
the handling of sheets, webs or strands.
(3) Note. For other houses, kilns or containers having
conveyors, see appropriate preceding subclasses, particularly
subclasses 105, 108+, 147, 576+, 611+, particularly
subclasses 647+, 657+, and 658+, 164, 179+, 189, and 190.
(4) Note. For houses, kilns or containers having a single
conveyor for conveying material in a single path, see this
class, subclasses 201+ and other appropriate indented
subclass, and subclasses 216 and 217, for plural units or
compartments having handling means such as trucks and rails
for moving material in single or plural paths.
SEE OR SEARCH THIS CLASS, SUBCLASS:
481 and 482+, for processes involving material speed,
thickness or quantity control.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, appropriate subclasses for
systems of plural conveyors, and subclass 599 and 603 for
plural conveyors forming an ascending or descending zigzag
path.
Subclass:
204
This subclass is indented under subclass 203. Apparatus in
which the conveyor has provision for carrying or moving
material supports which are detachable therefrom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
194 for other shelf, tray or drawer handling, and see notes
to subclasses 192+.
SEE OR SEARCH CLASS:
104, Railways, appropriate subclasses, such as 172.1+, 173.1+
and 202+.
Subclass:
205
This subclass is indented under subclass 203. Apparatus in
which the material travels in two or more independent paths.
(1) Note. For means feeding material through plural press
couples in independent paths, see this class, subclass 144.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 570 for plural
conveyors providing independent conveying paths.
Subclass:
206
This subclass is indented under subclass 203. Apparatus
including means contacting the material and moving it by
pushing along a support, as by reciprocating or continuously
moving blades.
(1) Note. This subclass includes devices which may both
carry and push the material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
208 for single endless conveyors, both courses carrying but
neither pushing, material.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclasses 717+.
Subclass:
207
This subclass is indented under subclass 203. Apparatus
including an endless conveyor having portions thereof
extending in different directions, and which thus carries the
material to be treated in an irregular (generally zigzag)
path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
208 for two course endless conveyors, both courses carrying
material.
Subclass:
208
This subclass is indented under subclass 203. Apparatus
including a single endless conveyors traveling in a closed
two course circuit with both courses of the conveyor carrying
material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
206 for single endless conveyors in which one course may
carry and the other course push material.
Subclass:
209
This subclass is indented under subclass 201. Apparatus
including either, or both, (1) two or more houses, kilns or
containers, or (2) an enclosure divided into a plurality of
material treating compartments, as by partitions.
(1) Note. The following subclasses in this class involve
plural units or compartments: 61, 62 and indented subclasses,
68, 98, 113 and indented subclasses, 127 and indented
subclasses, 144, 167, 180, 186, 190, and 193.
SEE OR SEARCH THIS CLASS, SUBCLASS:
192 and indented subclasses, for removable shelf or tray
type.
203 and indented subclasses for subject matter provided for
in this subclass or the indented subclasses, plus conveyors
providing plural treating units or compartments.
226 where baffles or deflectors not forming distinct
material compartments cause a tortuous gas flow.
238 for plural tray units.
Subclass:
210
This subclass is indented under subclass 209. Apparatus
including means to contact the material treated with a
treating gas or vapor.
Subclass:
211
This subclass is indented under subclass 210. Apparatus in
which two or more of the treating units or compartments are
vertically arranged with respect to each other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
171 and indented subclasses, and subclass 178 for gravity
material flow type.
192 and indented subclasses, for vertically arranged
removable shelf or tray type and subclasses 237 and 238, for
vertically arranged trays or floors.
Subclass:
212
This subclass is indented under subclass 210. Apparatus
including means to recirculate the treating gas or vapor in
whole or part.
(1) Note. See (1) Note to subclasses 219+, this class, for
other gas or vapor recirculation.
(2) Note. This subclass does not include the reuse of the
gas or vapor in successive compartments or units without
recirculation through each or through two or more.
Subclass:
213
This subclass is indented under subclass 212. Apparatus in
which each separate unit or compartment has a gas or vapor
recirculation path individual to it.
(1) Note. The flow may be caused by a single gas or vapor
forcing means but where there are two or more separate
recirculation paths and any one thereof includes two or more
units or compartments, see this class, subclasses 212+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
214 for parallel circulation only, not involving
recirculation.
Subclass:
214
This subclass is indented under subclass 210. Apparatus in
which each separate unit or compartment has a gas or vapor
path individual to it.
(1) Note. Where there are two or more gas or vapor paths and
any one thereof includes two or more units or compartments,
see this class, subclass 210 or other appropriate indented
subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
213 for parallel circulation involving recirculation.
Subclass:
215
This subclass is indented under subclass 210. Apparatus
including heating means for either, or both, (1) the treating
gas or vapor, or (2) the material undergoing treatment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
209 for heaters without gas or vapor contact means.
Subclass:
216
This subclass is indented under subclass 215. Apparatus
having either, or both, (1) a conveyor for conveying the
material undergoing treatment into and out of the unit or
compartment, or (2) a support for the material undergoing
treatment (such as a rack or car) movable into and out of the
unit or compartment.
Subclass:
217
This subclass is indented under subclass 210. Apparatus
having means as defined in subclass 216.
Subclass:
218
This subclass is indented under subclass 201. Apparatus
including means to contact the material undergoing treatment
with a gas or vapor.
SEE OR SEARCH CLASS:
432, Heating, subclasses 201+ for a work chamber supporting
work to be transversed by a steam of air heated indirectly by
a specific combustion device.
Subclass:
219
This subclass is indented under subclass 218. Apparatus
including means to recirculate the treating gas or vapor in
whole or part.
(1) Note. The following apparatus subclasses include
recirculation of the treating gas or vapor: 565+, 576+, 77,
78, 84, 100, 114, 115, 122, 131, 629+, and indented
subclasses, 169, 181, 182, 187+, 191, 196, 212, and 213.
Subclass:
220
This subclass is indented under subclass 219. Apparatus in
which the recirculation is caused by the heater only.
SEE OR SEARCH THIS CLASS, SUBCLASS:
78
234 for gas or vapor flow caused by heater action, without
recirculation.
Subclass:
221
This subclass is indented under subclass 219. Apparatus in
which the treating gas or vapor is caused to recirculate by
the jet action (Venture or aspirating effect) caused by
injection or flow of treating gases or vapors into the
treating chamber.
(1) Note. Complete the search in this class, subclass 84 for
jet devices which add a treating material to the treating gas
or vapor and cause circulation thereof, and subclass 75 for
direct contact condensers.
Subclass:
222
This subclass is indented under subclass 219. Apparatus in
which, (1) the means for delivering or distributing the
treating gas or vapor to the treating chamber is mounted for
motion, or (2) the gas or vapor forcing means is mounted for
motion in addition to the motion necessary to force the gas
or vapor.
(1) Note. Such motion may be for either (1) changing the
direction of gas or vapor flow, or (2) for removal from the
treating chamber of the delivering or distributing means or
the forcing means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
229 and notes thereto.
Subclass:
223
This subclass is indented under subclass 219. Apparatus
including more than one means for forcing the flow of the
treating gas or vapor.
(1) Note. Complete the search in this class, subclasses 191,
203 and indented subclasses, particularly subclass 207, and
subclasses 212, 213, 226, and 230 and see notes thereto.
Subclass 191 includes plural reversible blowers or plural
blowers with means for causing a reverse flow.
Subclass:
224
This subclass is indented under subclass 219. Apparatus
including two or more inlets and/or two or more outlets for
the treating gas or vapor to the material treating chamber.
This is usually to obtain a desired distribution of the
treating gas or vapor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
203 and indented subclasses, and 220-223, for the subjects
matter there provided for which may include plural inlets
and/or outlets.
subclasses 232+
Subclass:
225
This subclass is indented under subclass 224. Apparatus in
which one or more of the partitions forming the material
treating chamber are provided with plural openings.
(1) Note. This includes foraminous walls, such as walls
formed of slats or pervious fabrics.
SEE OR SEARCH THIS CLASS, SUBCLASS:
233
Subclass:
226
This subclass is indented under subclass 218. Apparatus
having means for causing the treating gas or vapor to move
through the treating chamber in other than a rectilinear path
(as a spiral, helical or zigzag path).
(1) Note. Complete the search on tortuous treating gas or
vapor path in this class, subclasses 199, 203 and 209 and
their indented subclasses, particularly subclasses 212, 215
through 217 and 223. In subclass 209 and indented subclasses
the flow is through distinct material compartments.
SEE OR SEARCH THIS CLASS, SUBCLASS:
229 230, and 231.
Subclass:
227
This subclass is indented under subclass 218. Apparatus in
which the treating gas or vapor flows through the treating
chamber (1) from either the treated material entrance or exit
toward opposite end, or (2) is introduced at some
intermediate point and flows toward either the treated
material entrance or exit, or (3) both.
SEE OR SEARCH THIS CLASS, SUBCLASS:
209 and indented subclasses, particularly subclasses 215
through 217 and 226 and in subclass 203 and indented
subclasses.
Subclass:
228
This subclass is indented under subclass 227. Apparatus in
which the gas and/or vapors that contact the material have
opposite directions of flow only.
Subclass:
229
This subclass is indented under subclass 218. Apparatus
having a movable gas or vapor distributor as defined in
subclass 222.
SEE OR SEARCH THIS CLASS, SUBCLASS:
191 for means for causing reversible or pulsating flow.
226 for baffles causing a tortuous flow.
231 for fixed gas or vapor baffles and see notes thereto.
Subclass:
230
This subclass is indented under subclass 218. Apparatus
having plural gas or vapor forcing means as defined in
subclass 223.
(1) Note. Complete the search in this class, subclasses 212
through 214, 223, and 226 and see notes thereto.
Subclass:
231
This subclass is indented under subclass 218. Apparatus
including one or more baffles for guiding the treating gas or
vapor in a definite path through the treating chamber.
(1) Note. Where baffles cause a recirculation, see this
class, subclass 219 and indented subclasses.
(2) Note. Complete the search in this class, subclass 226,
where the baffles cause a tortuous gas or vapor flow; in
subclass 209 and indented subclasses, where partitions
forming units or compartments act as baffles; in subclasses
222 and 229, for movable baffles, and in subclass 203 and
indented subclasses, for baffles between conveyors or
conveyor runs.
SEE OR SEARCH THIS CLASS, SUBCLASS:
195 and indented subclasses, for baffles causing a desired
flow of the treating gas and/or vapor over removable shelves
or trays.
232 and 233, for ducts, openings, etc., for introducing the
treating gas or vapor into or removing it from the treating
chamber.
Subclass:
232
This subclass is indented under subclass 218. Apparatus
having two or more gas or vapor inlets and/or outlets as
defined in subclass 224.
SEE OR SEARCH CLASS:
454, Ventilation, particularly subclass 173 and indented
subclasses.
Subclass:
233
This subclass is indented under subclass 232. Apparatus
having openings in the wall, ceiling or floor as defined in
subclass 225.
SEE OR SEARCH THIS CLASS, SUBCLASS:
174 and 211, for superposed floors many of which are
perforated.
Subclass:
234
This subclass is indented under subclass 218. Apparatus in
which the flow of treating gas or vapor into contact with the
material is caused by the heater alone.
SEE OR SEARCH THIS CLASS, SUBCLASS:
73 74, 75, 197, and 198.
220 for recirculation caused by heater action, and search
notes thereto.
235 where the heater causes the evolved gases or vapors to
vent.
Subclass:
235
This subclass is indented under subclass 201. Apparatus
including means to vent the gases or vapors evolved due to
treatment of the material.
(1) Note. For means to vent gases and/or vapors which
contact material for treatment, see this class, subclasses
210 and 218 and their indented subclasses.
(2) Note. See process subclass 521 and apparatus subclass 72
and indented subclasses of this class for means to treat the
treating gas or vapors or the evolved gases or vapors, and
subclass 92 for vacuum apparatus.
Subclass:
236
This subclass is indented under the class definition.
Apparatus comprising material handling means or material
conveying means combined with means to dry and/or contact the
material being treated with a treating gas or vapor.
(1) Note. See appropriate subclasses of this class for the
apparatus here defined combined with other apparatus, and
complete the search in subclass 162 for means peculiar to
sheet, web or strand, and subclass 71 for absorbent conveyors
combined with other drying means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 576+ for fluid current conveyors.
SEE OR SEARCH CLASS:
193, Conveyors, Chutes, Skids, Guides, and Ways.
198, Conveyors: Power-Driven.
Subclass:
237
This subclass is indented under the class definition.
Apparatus including supporting surfaces upon which material
is placed. These may include a mere surrounding flange.
(1) Note. Complete the search in this class, subclass 192
and indented subclasses, particularly subclasses 197, 198 and
200. These subclasses must be searched for housings or
supports as well as for the subject provided for in this and
the indented subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
172 and 178, for plural floors with gravity flow
therebetween.
225 and 233, and see notes.
239 and 240.
SEE OR SEARCH CLASS:
52, Static Structures (e.g., Buildings), subclasses 660+
for fabric or lattice openwork, e.g., gratings, not elsewhere
provided for.
209, Classifying, Separating, and Assorting Solids,
subclasses 392+ for sifting element dress.
210, Liquid Purification or Separation, subclass 498 and 499
for filter plates or screens.
432, Heating, subclasses 253+, for a means specialized to
holding, shielding, or supporting work within a furnace.
Subclass:
238
This subclass is indented under subclass 37. Apparatus
including the structure of single trays and combinations of
two or more tray structures.
(1) Note. Subclass 237 of this class has such devices
combined with either, or both, (1) heating means, or (2) gas
or vapor forcing means.
(2) Note. Search various receptacle classes, such as Classes
217, Wooden Receptacles, 220, Receptacles, and 229,
Envelopes, Wrappers, and Paperboard Boxes, for other tray
structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 201+ particularly subclass 233 for receptacle
structure.
Subclass:
239
This subclass is indented under the class definition.
Apparatus including means to support the material treated and
not provided for above.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101 and 106.
subclasses 143+ for platens in press type driers.
237 and 238.
SEE OR SEARCH CLASS:
211, Supports: Racks, and 248, Supports, for supports not
combined with drying and/or gas or vapor contact means.
269, Work Holders, appropriate subclasses. Class 269 is the
residual locus for patents to a device for clamping,
supporting and/or holding an article (or articles) in
position to be operated on or treated. See notes thereunder
for other related loci.
Subclass:
240
This subclass is indented under subclass 239. Apparatus
restricted to the structure of supporting rods or rolls, per
se.
(1) Note. For external drying drums, see this class,
subclasses 110+.
SEE OR SEARCH CLASS:
294, Handling: Hand and Hoist-Line Implements, subclass 5.5,
19.1+, and particularly, subclass 243.5 for supporting rods
used in handling.
452, Butchering, subclasses 187+ for supports used in
butchering.
492, Roll or Roller, for a roll, per se, not elsewhere
provided for, and see the notes thereunder.
Subclass:
241
This subclass is indented under the class definition.
Apparatus including an agitator for material in combination
with means for delivering a gas or vapor for contact with
such material.
(1) Note. Where such means is claimed in combination with
the treated material supporting means, see the appropriate
group above.
Subclass:
242
This subclass is indented under the class definition.
Apparatus including means to seal an opening in a treating
chamber against gas or vapor leakage inwardly or outwardly
and providing for the feeding of material through the
opening.
(1) Note. This subclass includes only enough of the chamber
structure to cooperate with the seal. Where other housing or
treating is claimed, the patents are elsewhere appropriately
classified. This applies to a chamber acting as a seal or air
lock only. For other plural chambers or compartments which
may have seals therebetween, see this class, subclasses
209+.
(2) Note. See this class, subclass 231 and notes for
deflecting baffles causing a definite gas or vapor flow.
(3) Note. Complete the search in this class, subclass 92 and
see notes. Such subclass includes vacuum treating chambers
including feeders and chamber seals.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 860.3.
202, Distillation: Apparatus, subclass 269.
221, Dispensing, subclass 106 and 108, for rotary trap
chamber feeders.
277, Seal for a Joint or Juncture, for a generic sealing
means or process.
396, Photography, subclass 579 for the use of a gaseous
fluid treating apparatus in photography.
414, Material or Article Handling, subclasses 217+ for
apparatus for moving material between zones having different
pressures and inhibiting a change in the pressure gradient
there between.
432, Heating, subclass 242, for a closure or seal for the
work entrance passage of a heating furnace.
454, Ventilation, subclasses 188+ for the use of a
protective air current which seals an opening against gas or
vapor leakage therethrough.
Subclass:
245
MATERIAL TREATED BY ELECTROMAGNETIC ENERGY:
This subclass is indented under the class definition. Subject
matter in which a physical substance or object is subjected
to electrical power or radiation extending across the entire
range of frequencies from 10[supscrpt]23[end supscrpt] cycles
per second to 0 cycles per second or corresponding
wavelengths from 10[supscrpt]-13[end supscrpt] cm to infinity
to remove moisture from the substance or object.
(1) Note. Where the energy is not applied to the object or
material, but is used for generating heat energy that is
transferred to the material or object, see other subclasses
of this class or other appropriate heating classes.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, subclass 451 for
apparatus for directing an electric current, field, or
discharge through food.
131, Tobacco, subclass 299 for a process of drying tobacco
in which electrical energy is applied to the tobacco.
204, Chemistry: Electrical and Wave Energy, appropriate
subclasses for electrical or wave energy processes,
especially subclasses 450+ for drying solids by
electro-osmosis or electrophoresis, subclasses 155+ for
chemical production of a compound or element by electrical or
wave energy in a magnetic field, and subclasses 164+ for
chemical treatment of a compound or element by an
electrostatic field or electrical discharge.
205, Electrolysis: Processes, Compositions Used Therein, and
Methods of Preparing the Compositions, for drying by
electrolysis, especially subclasses 687+.
315, Electric Lamp and Discharge Devices: Systems, for
miscellaneous systems supplying electric energy to an
electric space discharge device of the gas or vapor
ionization type.
373, Industrial Electric Heating Furnaces, and Class 219,
Electric Heating, for a process and apparatus for applying
electrical energy to material or an object for heating only.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclass 20, 21, and
22+ for process of disinfecting, deodorizing, preserving, or
sterilizing by electrical or wave energy.
426, Food or Edible Material: Processes, Compositions, and
Products, subclasses 237+ for a process involving the
application of electrical or wave energy to foods.
Subclass:
246
Electric current applied directly through material:
This subclass is indented under subclass 245. Subject matter
wherein a flow of electric charge is carried through the
material as if the material itself were an electrical
conductor.
Subclass:
247
Induction heater:
This subclass is indented under subclass 245. Subject matter
wherein the electrical energy creates heat by generating an
electromotive force through the use of a varying magnetic
flux.
Subclass:
248
Magnetic field:
This subclass is indented under subclass 245. Subject matter
wherein the material is subjected to a magnetic field.
Subclass:
249
Controls particle movement in a fluidized bed:
This subclass is indented under subclass 248. Subject matter
wherein the magnetic field regulates the motion of small
pieces of material suspended in a gas stream.
Subclass:
250
Electrostatic field:
This subclass is indented under subclass 245. Subject matter
wherein the electromagnetic energy is in the form of a
stationary electric field.
Subclass:
251
Having suction means:
This subclass is indented under subclass 250. Subject matter
including means to create a reduced pressure around the
material being treated.
Subclass:
252
Having vibration means:
This subclass is indented under subclass 250. Subject matter
including means to rapidly oscillate the material.
Subclass:
253
Having needlelike electrodes:
This subclass is indented under subclass 250. Subject matter
including thin pointed electric conductors to emit an
electrostatic field.
Subclass:
254
Having heating or cooling means:
This subclass is indented under subclass 250. Subject matter
including means to vary the temperature of the material, a
treating gas or vapor, or other parts of a drying system.
Subclass:
255
Radio or high-frequency energy:
This subclass is indented under subclass 245. Subject matter
wherein the radiation used in drying is approximately
10[supscrpt]7[end supscrpt]-10[supscrpt]8[end supscrpt] Hz
with a corresponding wavelength of 10[supscrpt]4[end
supscrpt]-10[supscrpt]2[end supscrpt] cm.
Subclass:
256
Having additional heating means:
This subclass is indented under subclass 255. Subject matter
including a separate means to increase the temperature of the
material, a treating gas or vapor, or other parts of a drying
system.
Subclass:
257
Having pressure reducing means:
This subclass is indented under subclass 255. Subject matter
including means to establish a vacuum or a suction.
Subclass:
258
Plural units or chambers:
This subclass is indented under subclass 255. Subject matter
including more than one high-frequency device or multiple
compartments.
Subclass:
259
Microwave energy:
This subclass is indented under subclass 245. Subject matter
wherein the radiation used in drying is approximately
10[supscrpt]10[end supscrpt] Hz with a corresponding
wavelength of 1.0 cm.
Subclass:
260
Clothes dryer:
This subclass is indented under subclass 259. Subject matter
wherein the microwave dryer is used for removing moisture
from articles of apparel.
Subclass:
261
Having rotating drum:
This subclass is indented under subclass 260. Subject matter
wherein the microwave clothes dryer has a cylindrical chamber
which turns about the cylinder axis.
Subclass:
262
Having vibrating means:
This subclass is indented under subclass 259. Subject matter
including means to rapidly oscillate the material.
Subclass:
263
Having pressure reducing means:
This subclass is indented under subclass 259. Subject matter
including means to establish a vacuum or suction.
Subclass:
264
Plural units or chambers:
This subclass is indented under subclass 259. Subject matter
including more than one microwave device or multiple
compartments.
Subclass:
265
Having treating gas or vapor circulation:
This subclass is indented under subclass 259. Subject matter
including means to distribute gas or vapor through the
dryer.
Subclass:
266
Infrared energy:
This subclass is indented under subclass 245. Subject matter
wherein the radiation used in drying is in the frequency
range of 10[supscrpt]13[end supscrpt]-10[supscrpt]14[end
supscrpt] Hz with a corresponding wavelength of
10[supscrpt]-3[end supscrpt] cm.
Subclass:
267
Having treating gas or vapor circulation:
This subclass is indented under subclass 266. Subject matter
wherein gas or vapor is distributed in the same treating area
as that treated by the infrared radiation.
Subclass:
268
Radiation controlled by other drying parameters:
This subclass is indented under subclass 266. Subject matter
wherein the infrared radiator output is regulated by sensed
drying conditions such as moisture content of the treated
material, temperature of the treated material, speed and
quantity of the treated material, moisture content of the
treating gas, etc.
Subclass:
269
Having temperature control:
This subclass is indented under subclass 268. Subject matter
wherein the temperature of the material, the temperature of
the treating gas, or the temperature of the treating chamber
is varied or regulated.
Subclass:
270
Vehicle paint dryer:
This subclass is indented under subclass 266. Subject matter
wherein infrared radiation alone is applied to a vehicle for
the purpose of drying or curing a painted vehicle surface.
Subclass:
271
Including evolved gas or vapor treatment:
This subclass is indented under subclass 270. Subject matter
in which gas or vapor emitted due to heating is condensed or
otherwise treated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
467 for a process of treating the contacting gas or vapor.
Subclass:
272
Including vehicle conveyor:
This subclass is indented under subclass 270. Subject matter
wherein the vehicle being treated is transported through the
treating zone.
(1) Note. Should gas or vapor circulation occur in a process
wherein the gas circulation and infrared treatment are not
applied in the same treatment location then these patents
should be properly placed in subclass 418 for diverse types
of drying operations.
Subclass:
273
Sheets, webs, or strands:
This subclass is indented under subclass 266. Subject matter
wherein the treated material is a broad, thin, rectangular
piece, a mesh, or cords.
Subclass:
274
Having gas or vapor treatment:
This subclass is indented under subclass 273. Subject matter
wherein the gas or vapor is handled in some manner.
Subclass:
275
Ultraviolet energy:
This subclass is indented under subclass 245. Subject matter
wherein the radiation used in drying is approximately
10[supscrpt]16[end supscrpt] Hz with a corresponding
wavelength of 10[supscrpt]-5[end supscrpt]-10[supscrpt]-6[end
supscrpt] cm.
Subclass:
276
Inert gas atmosphere:
This subclass is indented under subclass 275. Subject matter
wherein a dryer has a nonreactive gas environment.
Subclass:
277
Having shutter means:
This subclass is indented under subclass 275. Subject matter
wherein a movable cover is positioned between the material
and ultraviolet radiation source.
Subclass:
278
With cooling means:
This subclass is indented under subclass 275. Subject matter
including means to remove heat.
Subclass:
279
MATERIAL TREATED BY ACOUSTIC ENERGY:
This subclass is indented under the class definition. Subject
matter in which a physical substance or object is subjected
to sound waves.
Subclass:
280
FEATHER TREATING:
This subclass is indented under the class definition. Subject
matter disclosed for processing bird plumage.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, subclass 404 and 94.1+.
For the line between Class 8, subclasses 94.1+, and this
subclass, see (3) Note in that subclass.
15, Brushing, Scrubbing, and General Cleaning, appropriate
subclasses.
19, Textiles: Fiber Preparation, subclass 4.
71, Chemistry: Fertilizers, subclass 18.
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, appropriate subclasses for filling a mattress
or the like with fluent material wherein the material is
handled as fluid material.
209, Classifying, Separating, and Assorting Solids,
particularly subclass 2 and 133+.
223, Apparel Apparatus, subclass 47.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclasses 1-143.
Subclass:
281
With agitator:
This subclass is indented under subclass 280. Subject matter
including means to stir, beat, or shake the feathers being
treated.
Subclass:
282
PROCESS:
This subclass is indented under the class definition.
Method.
Subclass:
283
Hair on head:
This subclass is indented under subclass 282. Process for
treating human hair while on the head.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 96+ and see the notes to indented subclasses for
apparatus to dry human hair while on the head.
Subclass:
284
Freeze-drying:
This subclass is indented under subclass 282. Process of
drying a treated material by cooling by evaporating moisture
contained within the material to produce a frozen mass and
then applying a means to remove or decrease the amount of
moisture in the treated material.
(1) Note. Freezing by application of a vacuum plus other
treating is in this subclass; for other vacuum treating see
subclasses 406+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
391 for combined drying or cooling not involving freezing,
and subclass 428 for cooling by gas or vapor contact.
SEE OR SEARCH CLASS:
62, Refrigeration, subclasses 532+ and 123+ for separating
liquids by freezing.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, subclasses 5+ for a method for comminuting
liquids into particulate solid material which may include
freezing with or without drying of cooling fluid.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, subclasses 113+ for compositions for or
subcombination compositions for or breaking of or inhibiting
of colloid systems (e.g., foam breaking, emulsion breaking,
dispersion inhibiting, suspension settling, gel breaking,
smoke suppressing, coagulating, flocculating), when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
285
With separating of frozen fluid from treated material:
This subclass is indented under subclass 284. Process of
physically removing frozen fluid from the treated material
(e.g., scraping, vibrating, shearing, etc.).
Subclass:
286
With gas or vapor flow to remove frozen fluid:
This subclass is indented under subclass 285. Process of
contacting the frozen treated material with a gas or vapor
flow to remove the frozen fluid.
(1) Note. This gas or vapor flow could melt, sublimate, or
separate the moisture from the treated material.
Subclass:
287
Including vacuum:
This subclass is indented under subclass 284. Process of
applying subatmospheric pressure to the material being
treated during the freeze-drying process.
Subclass:
288
And spray freeze or immersion:
This subclass is indented under subclass 287. Process
involving injecting the material being treated into a chamber
subjected to a vacuum, or submerging the material in a
cooling fluid also within a chamber subjected to a vacuum.
Subclass:
289
And heating:
This subclass is indented under subclass 287. Process
involving increasing the temperature of the material treated
or the separated frozen or unfrozen fluid to promote the
removal or separation of the moisture from the treated
material or a treatment chamber.
Subclass:
290
Continuous processing:
This subclass is indented under subclass 289. Process
including moving material to be treated into and out of a
drying zone without interruption of the drying process.
Subclass:
291
Including mixing or agitating:
This subclass is indented under subclass 290. Process
involving stirring or churning of the treated material.
Subclass:
292
With gas or vapor treating (e.g., filtering or condensing):
This subclass is indented under subclass 290. Process
combined with adding any character of material to or removing
any character of material from the gas or vapor derived from
the freeze-drying process.
(1) Note. This process could involve filtering,
condensation, moisturizing, etc. of the derived gas or
vapor.
Subclass:
293
With gas or vapor treating:
This subclass is indented under subclass 289. Process
combined with adding any character of material to or removing
any character of material from the gas or vapor derived from
the freeze-drying process.
(1) Note. This process could involve filtering,
condensation, moisturizing, etc. of the derived gas or
vapor.
Subclass:
294
Desiccant or molecular sieve:
This subclass is indented under subclass 289. Process wherein
the gas or vapor is subjected to a substance that has a high
affinity for water, such as calcium oxide, or a straining
device at the molecular level that primarily removes moisture
from the gas or vapor by absorption or adsorption.
Subclass:
295
Including mixing or agitating:
This subclass is indented under subclass 289. Process
involving stirring or churning of the treated material.
Subclass:
296
Having specific container:
This subclass is indented under subclass 289. Process wherein
the vessel for the treated material is of a unique or special
type such as a glass bottle, test tube, jar, etc.
Subclass:
297
Having specific type of material support:
This subclass is indented under subclass 289. Process wherein
the underlying holder for the treated material is of a unique
or special type such as shelving, a removable tray, stacked
treatment units, etc.
Subclass:
298
With gas or vapor treating:
This subclass is indented under subclass 284. Process
combined with adding any character of material to or removing
any character of material from the gas or vapor derived from
the freeze-drying process.
(1) Note. This process could involve filtering, condensing,
moisturizing, etc. of the derived gas or vapor.
Subclass:
299
Desiccant or molecular sieve:
This subclass is indented under subclass 298. Apparatus
wherein the gas or vapor is subjected to a substance that has
a high affinity for water, such as calcium oxide, or a
strainer at the molecular level that primarily removes
moisture from the gas or vapor by absorption or adsorption.
Subclass:
300
Using filter:
This subclass is indented under subclass 298. Process wherein
the gas or vapor derived from the freeze-drying process is
subjected to a straining process primarily to remove
particulate material.
Subclass:
301
With additional material cooling by separate refrigeration
means:
This subclass is indented under subclass 287. Process
combined with use of an extra means for cooling the treated
material in addition to the basic cooling means that produces
cooling by the vaporization of liquid from the treated
material.
Subclass:
302
Congealing or thickening:
This subclass is indented under subclass 282. Process of
treating a flowable material wherein the material is jelled
or stiffened in any way.
SEE OR SEARCH CLASS:
425, Plastic Article or Earthenware Shaping or Treating:
Apparatus, subclasses 6+ for apparatus to make particulate
material (e.g., shot) directly from liquid or molten
material.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, subclasses 98+ for colloid systems of
continuous or semicontinuous solid phase with discontinuous
liquid phase (gels, pastes, flocs, coagulates) or agents for
such systems or making or stabilizing such systems or agents,
when generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
Subclass:
303
By adding congealing or thickening agent:
This subclass is indented under subclass 302. Process wherein
a substance is mixed with the material treated which does not
result in a chemical reaction with the treated material but
the result of the interaction is a congealing or thickening
of the material treated.
(1) Note. This subclass differs from subclasses 329+ in that
the processes in this subclass involve treating a flowable
material to increase its viscosity, while subclasses 329+,
which also provide for the addition of a treating agent,
involve treating both flowable and nonflowable material to
produce a solid or particulate mass.
Subclass:
304
By cooling of treated material:
This subclass is indented under subclass 302. Process wherein
the material treated is thickened or congealed by reducing
its temperature.
Subclass:
305
By evaporating moisturizing fluid:
This subclass is indented under subclass 302. Process wherein
the material treated is thickened or congealed by the
vaporization of the wetting agent in the material treated.
(1) Note. This includes boiling, vacuum treatment,
evaporation by exposure to a desiccant, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 287+ for freeze-drying by vacuum.
Subclass:
306
Sheet or web contact preventing by spacer sheet, web, or
strand:
This subclass is indented under subclass 282. Process in
which sheets are treated while separated from one another by
another separating sheet, web, or strand or parts of a web
are separated from other parts by an added separating sheet
or web.
SEE OR SEARCH THIS CLASS, SUBCLASS:
94 for the corresponding apparatus.
SEE OR SEARCH CLASS:
101, Printing, subclass 417 and 419 for interleaving sheets
with other sheets or webs where no positive drying step is
claimed or where such processes are combined with printing,
whether or not positive drying is claimed.
Subclass:
307
Retarding or shielding of treatment:
This subclass is indented under subclass 282. Process
involving slowing of the treating action either over the
entire object being dried or over selected areas by buffering
against the treating operation.
(1) Note. The buffering may be done in any manner such as
coating, mounting in a frame, etc.
Subclass:
308
Radiation applying with shielding:
This subclass is indented under subclass 307. Process wherein
radiation treatment strength is selectively applied to
particular areas of the material treated through the action
of a radiation barrier.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 245+ for full application of radiation during
treatment.
Subclass:
309
Shielding by selective application of gas or vapor flow:
This subclass is indented under subclass 307. Process wherein
the treating gas or vapor is directed to particular areas on
the treated material by altering the velocity or direction of
flow of the treating gas or vapor from its source, which
results in differential exposure by the treating gas or
vapor.
Subclass:
310
Application of temporary coating:
This subclass is indented under subclass 307. Process wherein
a material is attached to the material treated to transiently
cover the material treated, which would provide particular
areas with differential treatment.
Subclass:
311
Shielding by use of physical barrier to treating gas or
vapor:
This subclass is indented under subclass 307. Process wherein
a buffer not attached to the material treated is associated
with the material and arranged to provide differential gas or
vapor contact on successive areas of the material treated.
Subclass:
312
By centrifugal force:
This subclass is indented under subclass 282. Process
comprising subjecting the materials undergoing treatment to
the force on an object in curvilinear motion that is directed
away from the center of curvature or axis of rotation.
(1) Note. This may be for any purpose, as for causing the
material to move, preventing shrinkage of material, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
58 and 59, for an apparatus that uses centrifugal force.
SEE OR SEARCH CLASS:
134, Cleaning and Liquid Contact With Solids, subclass 17
and 33 for a process using centrifugal force.
494, Imperforate Bowl: Centrifugal Separators, subclass 37
for a process of that class and see the reference to that
class appearing in (3) Note of the definition of this class
(34).
Subclass:
313
Continuous processing:
Process under 312 wherein the material treated enters and
exits the centrifugal force applying means without
interruption of the centrifugal action on the material.
Subclass:
314
With centrifugal spraying of the treated material:
Process under 313 wherein the material treated is a
suspension or slurry injected into a treatment zone in a
manner such that solids within the dispersed material are
separated from a carrier liquid by the action of centrifugal
force.
Subclass:
315
With heating:
This subclass is indented under subclass 313. Process wherein
an increase in temperature is provided in the treating
process.
Subclass:
316
With recirculation of treated material:
This subclass is indented under subclass 313. Process wherein
a portion of the entire stream of treated material is
directed back into the treatment zone after exiting the
treatment zone.
Subclass:
317
With carrier for thin discrete article:
This subclass is indented under subclass 312. Process wherein
a thin substrate-type article is supported in a device that
holds individual or a plurality of articles while being
subjected to centrifugal force.
Subclass:
318
Rotating drum or basket:
This subclass is indented under subclass 312. Process wherein
a vessel containing the treated material is a revolvable
container that subjects the material undergoing treatment to
centrifugal force as a result of its revolving.
Subclass:
319
Variable speed:
This subclass is indented under subclass 318. Process wherein
the velocity of rotation of the vessel containing the treated
material is changed during treatment.
(1) Note. The variable speed set forth in this subclass
definition does not include the speed variations that occur
during the activation or deactivation of the means causing
the rotation of the rotatable vessel.
Subclass:
320
With pressurized atmosphere:
This subclass is indented under subclass 318. Process wherein
the pressure within the treating vessel is maintained above
atmospheric pressure for a portion of or the entire treating
process.
SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for pressurized treatment without the application of
centrifugal force in a rotatable vessel.
Subclass:
321
Including heating:
This subclass is indented under subclass 318. Process wherein
an increase in temperature is applied to the treated
material.
Subclass:
322
Foraminous basket:
This subclass is indented under subclass 318. Process wherein
the vessel holding the treated material has a plurality of
openings in its wall members that permit the flow of liquid
or gas or vapor yet hold the treated material within the
vessel.
Subclass:
323
With fluidizing of treated material:
This subclass is indented under subclass 322. Process
including liquefying the treated material during the treating
process.
Subclass:
324
With inert atmosphere:
This subclass is indented under subclass 318. Process wherein
a gas or vapor or mixture of gas or vapor other than air
alone is supplied to the rotatable vessel and the gas or
vapor or mixture is not chemically reactive with the treated
material.
Subclass:
325
With pressurized atmosphere:
This subclass is indented under subclass 312. Process wherein
the pressure within the treating zone is above atmospheric.
Subclass:
326
Rotating gas or vapor stream:
This subclass is indented under subclass 312. Process wherein
the treated material is conveyed by a revolving gas or vapor
current such that the material is subjected to centrifugal
force.
Subclass:
327
With heating:
This subclass is indented under subclass 326. Process wherein
an increase in temperature is supplied to the treating
process.
Subclass:
328
With additional conveying means:
This subclass is indented under subclass 312. Process wherein
the treated material is subjected to a means for transporting
other than the transporting means applied to the treated
material that causes the material to be subjected to
centrifugal force.
Subclass:
329
With contacting of material treated with solid or liquid
agent:
This subclass is indented under subclass 282. Process
involving contacting the treated material with either a
liquid or solid to promote drying or fluid cooling operation
of the treated material but not merely to cause motion of or
apply mechanical pressure to the material undergoing
treatment.
(1) Note. The drying operation on the treated material is
usually by absorption, adsorption, or adhesion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 94, and 95, for corresponding apparatus for contacting
material undergoing treatment with solids.
306 for spacer sheets and webs.
307 for the shielding or retarding of drying by the
application of solid material to the material undergoing
treatment or the use of a surface coating on the treated
material.
376 for recirculation of the material undergoing treatment,
including the adding of material to be treated to the
recirculated treated material.
397 for expressing or other mechanical liquid removal
combined with drying.
subclasses 402+ and 414+, for passing material through a
liquid seal.
subclasses 443+ for a process including contact of the
material with gases and vapors.
SEE OR SEARCH CLASS:
134, Cleaning and Liquid Contact With Solids, for a process
of cleaning combined with drying and for a process of
cleaning, per se, even though the cleaning is by gas or vapor
contact with solids. Class 34 has drying, per se, regardless
of the operations used.
201, Distillation: Processes, Thermolytic, subclasses 10+
for a thermolytic distillation process involving contacting
the material undergoing treatment with a hot liquid or
solid.
260, Chemistry of Carbon Compounds, subclass 110 and 705 for
extraction.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclasses 255+
for dissolving, extracting, or bleaching apparatus.
423, Chemistry of Inorganic Compounds, for a process directed
to extracting, leaching, or dissolving therein provided for,
and subclass 658.5 for extracting, leaching, or a dissolving
process not elsewhere provided for.
427, Coating Processes, for a process of applying a liquid to
a substrate to form a coating.
Subclass:
330
With regeneration or removal of treating agent:
This subclass is indented under subclass 329. Process wherein
the solid or liquid treating agent added to the material is
treated itself to renew its capacity to treat the material or
is removed from the treatment process after use.
Subclass:
331
Treating agent consists of both solid and liquid:
This subclass is indented under subclass 330. Process wherein
the treating agent has both solid and liquid constituents.
Subclass:
332
Treating agent is a solid:
This subclass is indented under subclass 330. Process wherein
the treating agent is a solid material that collects moisture
from the treated material.
Subclass:
333
With treating of solid material:
This subclass is indented under subclass 332. Process wherein
the treated material is a solid material.
Subclass:
334
With treating of suspension or slurry:
This subclass is indented under subclass 332. Process wherein
the material treated is a flowable mixture of solid particles
dispersed in a liquid.
Subclass:
335
Using absorbent band or belt:
This subclass is indented under subclass 332. Process wherein
moisture is soaked up by a blotting ribbon or strap of
material contacting the material being treated.
Subclass:
336
Using absorbent roller:
This subclass is indented under subclass 332. Process wherein
moisture is soaked up by a blotting cylinder contacting the
treated material.
Subclass:
337
Treating agent is a liquid:
This subclass is indented under subclass 330. Process wherein
the treating agent is a liquid.
Subclass:
338
With treatment of suspension or slurry:
This subclass is indented under subclass 337. Process wherein
the material treated is a mixture of solid particles
dispersed in a liquid.
Subclass:
339
With treatment of solid material:
This subclass is indented under subclass 337. Process wherein
the material treated is a solid material.
Subclass:
340
Treating liquid displaces moisture:
This subclass is indented under subclass 339. Process wherein
the liquid treating agent replaces moisture in the material
by the action of the treating liquid supplanting the
moisture.
(1) Note. Normally, additional treatment is necessary to
remove the treating liquid from the treated material after
displacement of the moisturizing fluid.
Subclass:
341
Treating liquid absorbs moisture:
This subclass is indented under subclass 339. Process wherein
the moisture is removed from the treated material by the
action of the moisture being drawn into the treating liquid.
Subclass:
342
Using multiple treating liquids:
This subclass is indented under subclass 339. Process wherein
more than one treating liquid is applied to the treated
material.
Subclass:
343
With addition of heat to drying process:
This subclass is indented under subclass 329. Process wherein
external heat is added to the drying process to increase the
drying action of the treated material.
(1) Note. The heat added during this process is primarily
added for the purpose of enhancing the interaction between
the solid or liquid agent and the material treated, with the
ultimate purpose of increasing the rate of the drying
process.
Subclass:
344
Treating agent consists of both solid and liquid:
This subclass is indented under subclass 343. Process wherein
the treating liquid has both solid and liquid constituents.
Subclass:
345
Treating agent is a solid:
This subclass is indented under subclass 343. Process wherein
the treating agent is a solid material that collects moisture
from the treated material.
Subclass:
346
Solid treating agent treats same material:
This subclass is indented under subclass 345. Process wherein
the solid treating agent is a solid dehydrated form of the
treated material.
Subclass:
347
Treating of suspension or slurry:
This subclass is indented under subclass 345. Process wherein
the treated material is a mixture of solid particles
dispersed in a liquid.
Subclass:
348
Treating agent is a liquid:
This subclass is indented under subclass 343. Process wherein
the treating agent is a liquid that removes moisture from the
treated material without the addition of external heat.
Subclass:
349
Treating suspension or slurry:
This subclass is indented under subclass 348. Process wherein
the treated material is a mixture of solid particles
dispersed in a liquid.
SEE OR SEARCH CLASS:
159, Concentrating Evaporators, for concentrating slurries,
suspensions, or solutions without the addition of a treating
agent or cooling.
Subclass:
350
Treating solid material:
This subclass is indented under subclass 348. Process wherein
the treated material is a solid.
Subclass:
351
Treating agent displaces moisture:
This subclass is indented under subclass 350. Process wherein
the liquid treating agent replaces moisture in the material
by action of the treating liquid supplanting the moisture.
Subclass:
352
Treating agent absorbs moisture:
This subclass is indented under subclass 350. Process wherein
the liquid treating agent assimilates moisture from the
treated material.
Subclass:
353
Solid treating agent treats solid material:
This subclass is indented under subclass 329. Process wherein
the treating agent is a solid material and the treated
material is also a solid material.
(1) Note. Solid treated material here differs from the
mixture of solids and liquids treated that are found in
subclass 356.
Subclass:
354
Using agitation or mixing:
This subclass is indented under subclass 353. Process wherein
the treating agent and the treated material are subjected to
churning or stirring.
Subclass:
355
Using absorbent band or belt:
This subclass is indented under subclass 353. Process wherein
moisture is blotted up by a ribbon or strap of material that
contacts the treated material.
Subclass:
356
Solid treating agent treats suspension or slurry:
This subclass is indented under subclass 329. Process wherein
the treated material is a mixture of solid particles
dispersed in a liquid and the treating agent is a solid
material.
Subclass:
357
Liquid treating agent treats solid material:
This subclass is indented under subclass 329. Process wherein
a liquid treating agent contacts a treated material that is a
solid material.
Subclass:
358
Treating agent absorbs moisture:
This subclass is indented under subclass 357. Process wherein
the liquid treating agent assimilates the moisture.
Subclass:
359
With fluid current conveying or suspension of treated
material:
This subclass is indented under subclass 282. Process in
which the treated material is moved or buoyed up by a gas or
vapor flow during treating.
SEE OR SEARCH THIS CLASS, SUBCLASS:
443 for a process for contacting material with gas or vapor
that does not suspend the material.
444 for a process for conveying a sheet, web, or strand and
640 for apparatus for conveying a sheet, web, or strand.
576 for fluid current conveying.
SEE OR SEARCH CLASS:
201, Distillation: Processes, Thermolytic, subclass 31 for a
process of thermolytic distillation in which the material
being treated is held suspended by a gas or vapor.
209, Classifying, Separating, and Assorting Solids, and see
the search notes in this class (34) for the line between
these classes.
432, Heating, subclass 15 for a process of heating
particulate work including the maintenance of a fluidized
bed.
Subclass:
360
Suspension of treated material:
This subclass is indented under subclass 359. Process wherein
the gas or vapor supplied to the treated material primarily
buoys up the treated material.
Subclass:
361
Including applying vacuum:
This subclass is indented under subclass 360. Process wherein
the material treated is subjected to subatmospheric pressure
while the material is suspended.
(1) Note. This treatment will normally be carried out in a
closed or sealed chamber to maintain the subatmospheric
environment.
Subclass:
362
Including pressurizing atmosphere:
This subclass is indented under subclass 360. Process wherein
the treated material is subjected to pressure above
atmospheric during treatment.
(1) Note. This treatment will normally be carried out in a
closed or sealed chamber to maintain the pressurized
environment.
Subclass:
363
With additional heat exchange:
This subclass is indented under subclass 360. Process wherein
the treated material is subjected to supplementary heat
transfer other than that supplied by the vapor or gas used
for suspending the treated material.
Subclass:
364
Including gas or vapor flow variation:
This subclass is indented under subclass 360. Process wherein
the rate of the gas or vapor flow is controlled to change
during the processing of the treated material.
Subclass:
365
Pulsed flow:
This subclass is indented under subclass 364. Process wherein
the gas or vapor is controlled to be discharged in short,
distinct, timed bursts of gas onto the treated material.
Subclass:
366
Including downward impinging fluid flow:
This subclass is indented under subclass 360. Subject matter
wherein the suspending current of the gas or vapor is
directed to the upper surface of the treated material.
Subclass:
367
With additional conveying:
This subclass is indented under subclass 360. Process
combined with use of a means for transporting the treated
material other than the suspending current.
Subclass:
368
Including agitating or comminuting of treated material:
This subclass is indented under subclass 360. Process wherein
the treated material is mixed or pulverized by a means other
than the suspending current.
Subclass:
369
Including baffle or deflector to adjust material flow:
This subclass is indented under subclass 360. Process wherein
the flow of the treated material is controlled by a variable
or fixed obstruction to the flow path of the treated
material.
Subclass:
370
With plural treating zones:
This subclass is indented under subclass 360. Process wherein
the treated material is subjected to multiple suspension or
fluidized treatments at different locations or the material
is subjected to the combination of a suspension or fluidized
treatment at one location and another gas or vapor treatment
at a different location.
Subclass:
371
Including material separators or sorters:
This subclass is indented under subclass 360. Process wherein
means are provided to remove the treated material from other
suspended material in the treating zone or combined with
means provided to sort and classify the treated material.
Subclass:
372
Spray drying and cooling of slurry or suspension:
This subclass is indented under subclass 359. Process wherein
a mixture of particles dispersed in a liquid is directed
through a nozzle to atomize the suspension or slurry for
promoting intimate contact with drying gas or vapor stream
that in addition to drying the suspension or slurry reduces
the temperature of the suspension or slurry.
(1) Note. It is essential that the suspension or slurry
undergoes cooling to be placed here. If the suspension or
slurry is heated during the drying process then the subject
matter should go in Class 159, Concentrating Evaporators.
Subclass:
373
With contact with additional gas or vapor flow:
This subclass is indented under subclass 372. Process wherein
a first gas or vapor is used to convey the suspension or
slurry through an atomizing nozzle and a second gas or vapor
is used to dry the resulting atomized solid-liquid stream.
Subclass:
374
Additional flow is countercurrent:
This subclass is indented under subclass 373. Process wherein
the additional gas or vapor flow is directed either totally
or partially against the direction of flow of the atomized
solid-liquid stream.
Subclass:
375
Having embedded loop circulation of treated material:
This subclass is indented under subclass 359. Process wherein
a portion or the entire body of the treated material is
conveyed by way of a treating gas or vapor in a complete
circle.
(1) Note. See subclass 376, where the material is caused to
recirculate without the assistance of a conveying fluid
stream.
Subclass:
376
With treated material recirculation:
This subclass is indented under subclass 282. Process wherein
the treated material after undergoing initial treatment is
conveyed back to the same source for treatment.
Subclass:
377
Recirculation of a portion of the treated material:
This subclass is indented under subclass 376. Process wherein
only a segment of the treated material is returned to the
initial source for further treatment.
Subclass:
378
With additional treating of recirculated portion (e.g.,
heating, cooling, separating):
This subclass is indented under subclass 377. Process wherein
an extra drying or nondrying treatment is applied to the
portion of the treated material that is recirculated before
the material is returned to the initial treatment source.
Subclass:
379
Recirculated portion mixed with untreated material:
This subclass is indented under subclass 377. Process wherein
the recirculated portion of treated material is mixed with
material not yet treated.
Subclass:
380
With nondrying treating of material:
This subclass is indented under subclass 282. Process wherein
in addition to the primary drying or gas or vapor contact
with the treated material there is an additional treating
applied other than drying.
(1) Note. Steps for moving, feeding, discharging, agitating,
piling, arranging, or controlling the thickness of the
material have been treated as incidents to drying or gas and
vapor contact operations.
SEE OR SEARCH THIS CLASS, SUBCLASS:
428 for cooling the material by contact by gas or vapor.
subclasses 443+ for a process wherein the gas or vapor
contacts the material multiple times, even though the
contacting gas or vapor moisture content is varied for the
purpose of controlling the moisture content of the material
undergoing treatment.
Subclass:
381
Nondrying treating precedes drying:
This subclass is indented under subclass 380. Process wherein
the nondrying treating takes place prior to the drying or gas
or vapor contact with the treated material.
Subclass:
382
Material shaping:
This subclass is indented under subclass 381. Process wherein
the nondrying treating consists of forming the treated
material into pellets or treating the material to granulate
it.
Subclass:
383
Puncturing or incising of treated material:
This subclass is indented under subclass 381. Process wherein
the treated material is subjected to piercing or scoring for
the purpose of promoting the drying process.
Subclass:
384
Grinding or comminuting:
This subclass is indented under subclass 381. Process wherein
the treated material is subjected to crushing to promote the
drying process.
Subclass:
385
Material shaping:
This subclass is indented under subclass 380. Process wherein
the nondrying treating consists of forming the material into
pellets or treating the material in order to granulate it.
Subclass:
386
Mixing or grinding:
This subclass is indented under subclass 380. Process wherein
the nondrying treating consists of stirring or crushing the
treated material.
Subclass:
387
Shearing or comminuting:
This subclass is indented under subclass 380. Process wherein
the nondrying treating consists of shearing or
deagglomerating the treated material.
Subclass:
388
Compacting or restraining:
This subclass is indented under subclass 380. Process wherein
the treated material is subjected to a force that compresses
the material without expressing moisture or applying physical
means to prevent the treated material from changing shape or
form during treating.
Subclass:
389
Adding of nondrying treating substance:
This subclass is indented under subclass 380. Process wherein
a non-chemically reactive substance is added to the treated
material where the added substance does not promote the
removal of moisture from the treated material but does affect
the physical nature of the treated material or the manner in
which the drying operation is carried out.
(1) Note. Some examples of the addition of nondrying
treating substances could be the addition of saturated steam
added to a wood drying process to encourage uniform drying of
the wood, the addition of an inert gas to a drying process
for the purpose of preventing combustion of the treated
material, addition of a fabric softener to the drying process
for clothes, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
310 for shielding the treated material by application of a
transient coating.
Subclass:
390
Deodorizer:
This subclass is indented under subclass 389. Process wherein
the nondrying treating substance functions to absorb or
displace odors in the treated material.
Subclass:
391
Cooling of treated material:
This subclass is indented under subclass 380. Process wherein
the temperature of the treated material is reduced.
Subclass:
392
Contacting material with cooling drum or roller:
This subclass is indented under subclass 391. Process wherein
the temperature of the treated material is reduced by
physically touching the material with a cylinder or barrel
having a reduced temperature.
Subclass:
393
Contacting material with cooling fluid:
This subclass is indented under subclass 391. Process wherein
the treated material is contacted by a fluid having a lower
temperature than the treated material.
(1) Note. Fluid applied should be for cooling the material
without adding moisture that would have to be removed by the
drying process.
Subclass:
394
Cooling fluid drawn through material treated:
This subclass is indented under subclass 393. Process wherein
the cooling fluid is pulled through the treated material by
suction.
Subclass:
395
Cooling fluid is ambient air:
This subclass is indented under subclass 393. Process wherein
the cooling fluid is encircling air.
Subclass:
396
Treated material is wood:
This subclass is indented under subclass 393. Process wherein
the treated material is wood.
Subclass:
397
Mechanical liquid removal:
This subclass is indented under subclass 282. Process
involving the removal of liquid from solids mechanically
(i.e., by an operation other than heating or gas or vapor
contact).
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 69+ and see the notes thereto.
subclasses 397+ for other mechanical liquid removal.
SEE OR SEARCH CLASS:
100, Presses, for expressing and see the reference to Class
100 in (3) Note of the main class definition of this class
(34) for the line between classes.
210, Liquid Purification or Separation, for decanting or
filtering and see the reference to Class 210 in (3) Note of
the class definition of this class (34) for the line between
classes.
Subclass:
398
Using compression:
This subclass is indented under subclass 397. Process wherein
mechanical force is applied to compact the treated material,
which results in the removal of moisture.
(1) Note. When centrifugal force is applied for removal of
moisture proper placement is in subclasses 312+.
Subclass:
399
Expressing liquid by use of roller:
This subclass is indented under subclass 398. Process wherein
a cylinder contacts the treated material to create the
compressive forces within the material to cause the removal
of moisture.
Subclass:
400
Expressing liquid by moving treated material through
restriction:
This subclass is indented under subclass 398. Process wherein
the treated material is forced through a narrow passage in
its path of flow, which creates compressive forces in the
material that causes liquid to be removed from the material.
Subclass:
401
Using vibration:
This subclass is indented under subclass 397. Process wherein
the treated material is subjected to mechanical reverberation
to remove moisture from the treated material.
Subclass:
402
Gas or vapor pressure varies during treatment:
This subclass is indented under subclass 282. Process wherein
treated material is subjected to a gas or vapor whose
treatment pressure is maintained at multiple levels in at
least one closed treatment vessel during treating or the
pressure is changed in a continuous or discontinuous manner
during the treating process.
(1) Note. Varying of pressure does not include the change in
treating pressure as a result of starting up or shutting down
the gas or vapor treating process.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 284+ for a process including freezing by
application of a vacuum plus other treating.
subclasses 329+ for other liquid contact processes.
Subclass:
403
Including subatmospheric pressure:
This subclass is indented under subclass 402. Process wherein
the treated material is subjected to a below-atmospheric
pressure during treating.
(1) Note. If subject matter is directed to freezing of
treated material by vacuum, then the subject matter should be
placed in subclasses 87+.
Subclass:
404
With addition of treating agent:
This subclass is indented under subclass 403. Process wherein
a substance is applied to the treated material or the gas or
vapor contacting the material for regulating or promoting the
treating material.
(1) Note. Examples of such treating agents would be steam,
inert gases, liquids that are evaporated during treating, or
any combination of such agents.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 329+ for the application of a liquid or solid
for the express purpose of drying.
SEE OR SEARCH CLASS:
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, for a chemical
reaction between the treated material and the treating
agent.
Subclass:
405
Including superatmospheric pressure:
This subclass is indented under subclass 402. Process wherein
the treated material is subjected to an above-atmospheric
pressure during treating.
Subclass:
406
Gas or vapor pressure is subatmospheric:
This subclass is indented under subclass 282. Process wherein
the treated material is subjected to a constant
below-atmospheric pressure in at least one treating vessel
during treating.
(1) Note. This subclass differs from subclass 403 in that
subclass 403 has a variable pressure level, where the
pressure levels in this subclass are constant.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 87+ for freezing of treated material by vacuum.
Subclass:
407
With condensation of vapor:
This subclass is indented under subclass 406. Process wherein
moisture is removed from the treating vapor during the
treating process.
Subclass:
408
With heating:
This subclass is indented under subclass 407. Process wherein
the temperature of the treated material or the treating vapor
increases.
Subclass:
409
Including addition of treating agent:
This subclass is indented under subclass 406. Process wherein
a modifying agent is added to the treating process to
regulate or promote the treating of the material without a
chemical reaction.
(1) Note. See subclass 404 for a definition of a treating
agent.
Subclass:
410
Treating agent is inert gas:
This subclass is indented under subclass 409. Process wherein
the treating agent used is a chemically nonreactive gas such
as nitrogen, argon, helium, etc.
Subclass:
411
Treating agent is steam:
This subclass is indented under subclass 409. Process wherein
the treating agent is steam added to the treating gas or
vapor.
Subclass:
412
With heating:
This subclass is indented under subclass 406. Process wherein
the treated material or the treating gas or vapor has its
temperature increase.
Subclass:
413
Gas or vapor pressure is superatmospheric:
This subclass is indented under subclass 282. Process wherein
the treated material is subjected to a constant pressure
above atmospheric in at least one closed treating vessel.
(1) Note. See (1) Note in subclass 406.
Subclass:
414
Sheet, web, or strand:
This subclass is indented under subclass 413. Process wherein
the treated material is a broad, thin, rectangular piece or a
cord or running-length member.
Subclass:
415
Including addition of treating agent:
This subclass is indented under subclass 413. Process wherein
a modifying agent is applied to the treated material or the
treating gas or vapor to regulate or promote the treating of
the material without a resulting chemical reaction.
Subclass:
416
Contacting gas or vapor with solid sorbent to store gas or
vapor:
This subclass is indented under subclass 282. Process wherein
gas or vapor under the influence of pressure or vacuum is
absorbed by a material that has an affinity for the gas or
vapor, such as a hydride.
Subclass:
417
With sealing of treating chamber:
This subclass is indented under subclass 282. Process using a
fluid to close off the treating chamber from the atmosphere.
Subclass:
418
Diverse types of drying operations:
This subclass is indented under subclass 282. Process in
which two or more distinct drying operations are used.
(1) Note. Where a plurality of drying operations of the same
type are employed, the patent is in the appropriate
succeeding subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
68 to complete the search for the apparatus.
443 for the application of a flame to the material.
498 for agitation or other motion of the treated material.
516 and 517, for sequential treatment of material with
diverse gases or vapors.
Subclass:
419
Sheet, web, or strand:
This subclass is indented under subclass 418. Process wherein
the material is a broad, thin, rectangular piece or a cord or
running-length member.
Subclass:
420
Including radiation or convection treatment:
This subclass is indented under subclass 419. Process wherein
the diverse types of drying operations include at least
radiation or direct contact with a heated surface where the
radiation treatment is infrared.
Subclass:
421
Running length:
This subclass is indented under subclass 420. Process wherein
the treated material is conveyed through a treating zone as a
continuous length.
Subclass:
422
Running length:
This subclass is indented under subclass 419. Process wherein
the treated material is conveyed through a treating zone as a
continuous length.
Subclass:
423
Sequential drying treatments:
This subclass is indented under subclass 418. Process wherein
multiple drying operations are applied individually and in a
specific order.
Subclass:
424
Of slurry or suspension:
This subclass is indented under subclass 423. Process wherein
the treated material is a mixture of solid particles
dispersed in a liquid.
Subclass:
425
Using rotating drum:
This subclass is indented under subclass 423. Process wherein
at least one of the diverse drying treatments uses a
revolving cylinder.
Subclass:
426
Plural treatments at same location:
This subclass is indented under subclass 418. Process wherein
the diverse drying operations are applied to the treated
material at the identical location.
Subclass:
427
Combined:
This subclass is indented under subclass 282. Process in
which there is combined with the material drying or gas or
vapor contact process a process step or steps of some other
kind, not provided for above.
(1) Note. The material drying or gas or vapor contact
process includes the treatment of the gas or vapor used or
evolved.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85 through 90, for corresponding apparatus combinations.
513 for processes involving the treatment of the material
with a gas or vapor and the conservation of heat during the
process.
Subclass:
428
Cooling by gas or vapor contact:
This subclass is indented under subclass 282. Process wherein
the temperature of the treated material is lowered by passing
a gas or vapor in contact with the material.
(1) Note. Apparatus for cooling only by contacting a gas or
vapor with the material is classified in the appropriate
apparatus subclass below and cross-referenced here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
391 and apparatus subclasses 6+, for cooling combined with
drying.
402 for cooling by application of a vacuum.
Subclass:
429
Including conveyor:
This subclass is indented under subclass 428. Process wherein
the material is moved through a cooling zone by a
transporting means.
Subclass:
430
Gas or vapor flow to top and bottom of treated material:
This subclass is indented under subclass 429. Process wherein
gas or vapor is directed to upper and lower surfaces of
conveyed, treated material.
Subclass:
431
Gas or vapor flow to bottom of treated material:
This subclass is indented under subclass 429. Process wherein
gas or vapor is directed to the lower surface of conveyed,
treated material.
Subclass:
432
Gas or vapor flow concurrent or countercurrent to treated
material flow:
This subclass is indented under subclass 429. Process wherein
the treating gas or vapor is directed in a parallel path
flowing in the same direction as the treated material, or is
directed in a parallel path flowing in the opposite direction
of the treated material.
Subclass:
433
Gas or vapor flow to top and bottom of treated material:
This subclass is indented under subclass 428. Process wherein
the gas or vapor is directed to upper and lower surfaces of
treated material.
Subclass:
434
Gas or vapor flow to bottom of treated material:
This subclass is indented under subclass 428. Process wherein
gas or vapor is directed to the lower surface of treated
material.
Subclass:
435
Gas or vapor flow concurrent or countercurrent to treated
material flow:
This subclass is indented under subclass 428. Process wherein
the treating gas or vapor is directed in a parallel path
flowing in the same direction as the treated material, or is
directed in a parallel path flowing in the opposite direction
of the treated material.
Subclass:
436
Gravity flow of treated material:
This subclass is indented under subclass 435. Process wherein
the motion of the treated material is due entirely to the
effects of gravity.
Subclass:
437
Treating hollow article:
This subclass is indented under subclass 282. Process wherein
the treated article has an empty space in its interior.
Subclass:
438
Having conveyor:
This subclass is indented under subclass 437. Process wherein
the hollow article is moved through a treating zone by a
transporting means.
Subclass:
439
Treating fluid directed to interior and exterior of hollow
article:
This subclass is indented under subclass 437. Process wherein
the treating fluid is directed to the inside and outside of
the hollow article.
Subclass:
440
With specific support for hollow article:
This subclass is indented under subclass 437. Process wherein
the hollow article is mounted on a specialized brace during
treating.
Subclass:
441
Support surrounds hollow article:
This subclass is indented under subclass 440. Process wherein
the exterior of the hollow article is encompassed by the
support.
Subclass:
442
Form-supported treated article:
This subclass is indented under subclass 282. Process wherein
the treated article is held on supports that have the
configuration of the treated article.
Subclass:
443
Gas or vapor contact with treated material:
This subclass is indented under subclass 282. Process in
which the material is treated with a gas or vapor that may or
may not be heated.
(1) Note. Treatment by a flame or combustion product is in
this subclass or the indented subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
402 for a process including vacuum, gas, or vapor pressure
varying or control or fluid sealing.
418 for treating with a gas or vapor either heated or
unheated in combination with heating of the material or in
combination with any other diverse treatment or the material
itself.
subclasses 511+ for a process that merely supports the
material in the air and lets nature take its course.
Subclass:
444
Sheet, web, or strand:
This subclass is indented under subclass 443. Process wherein
the treated material is a broad, thin, rectangular piece or a
cord or running-length member.
Subclass:
445
With drying parameter control:
This subclass is indented under subclass 444. Process wherein
gas or vapor conditions that influence the drying processes
are regulated or varied.
Subclass:
446
Temperature or moisture control of material treated or
treating gas or vapor:
This subclass is indented under subclass 445. Process wherein
the temperature or humidity of the treating gas or vapor or
the treated material is regulated.
Subclass:
447
Material speed control:
This subclass is indented under subclass 445. Process wherein
the velocity of the treated material is regulated during
treating.
Subclass:
448
Vapor or gas treatment:
This subclass is indented under subclass 444. Process having
any one or a combination of (a) the use of gases having
different degrees of vapor concentration; (b) changing or
maintaining constant the vapor concentration by adding or
removing gases or vapors; (c) adding any characteristic of
material to or removing any characteristic of material from
the treating gas or vapor.
Subclass:
449
Condensation of gas or vapor:
This subclass is indented under subclass 448. Process wherein
the treating gas or vapor is treated to cause the
condensation of the treating gas or vapor or any constituent
thereof.
Subclass:
450
Combustion of gas or vapor:
This subclass is indented under subclass 448. Process wherein
the treating gas or vapor undergoes burning during the
treating process.
Subclass:
451
Plural treating chambers:
This subclass is indented under subclass 444. Process wherein
the treated material is treated in more than one gas or vapor
treating chamber.
Subclass:
452
Gas or vapor drawn through treated material:
This subclass is indented under subclass 444. Process wherein
the treating gas or vapor is pulled from one side of the
material to the other side of the material.
Subclass:
453
Using vacuum roller:
This subclass is indented under subclass 452. Process wherein
the sheet, web, or strand is transported over a cylinder
having a vacuum inside that draws the gas or vapor through
the material.
Subclass:
454
With contact with heat exchanger (e.g., drum or roller):
This subclass is indented under subclass 444. Process wherein
the treated material directly touches a heat removing device,
such as a barrel or a cylinder.
Subclass:
455
Pocket ventilator:
This subclass is indented under subclass 452. Process wherein
a loop formed by the web between adjacent drying or web
guiding devices is subjected to an aerating flow of gas or
vapor into or out of a pocket.
Subclass:
456
Vacuum causes web to contact wire or felt:
This subclass is indented under subclass 455. Process wherein
ventilation of the pocket creates a vacuum that causes the
treated web to be urged into contact with or increases the
contact pressure between the web and its supporting wire or
felt.
Subclass:
457
With guide roller:
This subclass is indented under subclass 455. Process wherein
a cylinder contacts the web being treated primarily for the
purpose of directing the treated web through a series of
treating drums.
(1) Note. It is possible to have heat exchange or vapor
contact with the web by contact with a guide roller. However,
this function would be secondary to its intended purpose of
directing the web through the major treatment drums.
Subclass:
458
With vacuum guide roller:
This subclass is indented under subclass 452. Process wherein
a cylinder whose surface is subjected to a vacuum contacts
the web being treated primarily for the purpose of directing
the web through a series of treating drums.
Subclass:
459
Running length of treated material:
This subclass is indented under subclass 444. Process wherein
a sheet, web, or strand is conveyed through a treating zone
in a continuous manner without a designed physical separation
in the length of the treated material.
Subclass:
460
Gas or vapor suspends treated material:
This subclass is indented under subclass 459. Process wherein
the sheet, web, or strand is conveyed on a cushion of gas or
vapor.
Subclass:
461
Gas or vapor directed to opposed surfaces of material:
This subclass is indented under subclass 460. Process wherein
the supporting gas or vapor stream is directed to surfaces
that are directly opposite each other.
Subclass:
462
With spacing or coiling:
This subclass is indented under subclass 459. Process wherein
the sheet, web, or strand is held in spaced relation such as
loops or successive passes to facilitate the circulation of a
gas or vapor, or is treated while rolled or coiled.
SEE OR SEARCH THIS CLASS, SUBCLASS:
306 for a process involving spacer sheet or web.
437 where the sheet, web, or strand is in the form of a
hollow article (e.g., is coiled or rolled so as to form a
cake or bobbin) and is treated or handled as a hollow
article.
518 for piling or arranging material other than a sheet or
web.
Subclass:
463
Directing of gas or vapor:
This subclass is indented under subclass 459. Process wherein
the location of application of the treating gas or vapor is
controlled.
Subclass:
464
Gas or vapor directed to opposed surfaces of material:
This subclass is indented under subclass 463. Process wherein
the treating gas or vapor is directed to surfaces of the
material that are directly opposite each other.
Subclass:
465
Gas or vapor directed to single surface of material:
This subclass is indented under subclass 463. Process wherein
the gas or vapor is directed to only one surface of the
treated material.
Subclass:
466
With spacing, coiling, or rolling:
This subclass is indented under subclass 444. Process wherein
the sheets or parts of webs or strands are held in spaced
relation such as in loops or successive passes to facilitate
the circulation of a gas or vapor, or are treated while
rolled or coiled.
Subclass:
467
Treatment of gas or vapor:
This subclass is indented under subclass 443. Process
involving any one or a combination of: (a) the use of gases
having different degrees of vapor concentration regardless of
how obtained; (b) changing or maintaining constant the vapor
concentration by adding or removing gas or vapors; (c) adding
any characteristic of material to or removing any
characteristic of material from the treating gas or vapor.
(1) Note. Dry steam is treated as a gas.
(2) Note. Since the contact of a gas or vapor with material
to be dried is for the purpose of removing liquids from the
material with necessary increase in concentration, and
heating necessarily decreases the vapor concentration, the
vapor concentration control or varying must be from other
causes.
(3) Note. The removal of materials from the gases or vapors
after discharge from the treating zone is included here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
516 and 517, for mere sequential treatment with gases or
vapors without treating the gas or vapors.
Subclass:
468
Condensation of gas or vapor:
This subclass is indented under subclass 467. Process wherein
the treating gas or vapor undergoes a change from gas or
vapor to liquid during the treating of a material.
Subclass:
469
Collecting of condensed gas or vapor:
This subclass is indented under subclass 468. Process wherein
the condensate from the treating gas or vapor is directed to
a means to store the condensate as a product or reuse in the
treating process.
Subclass:
470
With vaporization of condensed gas or vapor:
This subclass is indented under subclass 469. Process wherein
the collected condensate is revaporized for reuse as a
treating gas or vapor.
Subclass:
471
Regulating temperature of gas or vapor:
This subclass is indented under subclass 468. Process
involving any combination of: (a) using a gas or vapor at
particular temperatures; (b) employing a step or steps to
maintain particular temperatures; (c) employing a plurality
of different temperatures of either the same or different gas
or vapor treating media; (d) heating the gas or vapor a
plurality of times.
(1) Note. Mere specification that the gas is heated or the
mere step of heating does not cause classification here; see
appropriate subclass below.
(2) Note. Since hot gases or vapors contacting cooler
material are necessarily cooled, the statement of such fact
does not cause classification here. The different
temperatures must be the temperatures before contact.
Subclass:
472
Absorption/adsorption of gas or vapor released from treated
material:
This subclass is indented under subclass 467. Process wherein
the treating gas or vapor or constituents within the treating
gas or vapor are drawn into and collected in a material that
has an affinity for the treating gas or vapor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
80 and 81, for apparatus that use absorption/adsorption for
treating gas or vapor.
Subclass:
473
Regeneration of absorption/adsorption material:
This subclass is indented under subclass 472. Process wherein
the collected gas or vapor is removed from the collecting
material.
Subclass:
474
Gas or vapor humidity regulation:
This subclass is indented under subclass 467. Process wherein
the percentage of moisture within the treating gas is
controlled.
Subclass:
475
And gas or vapor temperature regulation:
This subclass is indented under subclass 474. Process wherein
the temperature of the treating gas or vapor is controlled.
Subclass:
476
Gas or vapor temperature regulation:
This subclass is indented under subclass 467. Process wherein
the temperature of the treating gas or vapor is controlled.
Subclass:
477
With recirculation of gas or vapor:
This subclass is indented under subclass 476. Process wherein
the treating gas or vapor after contacting the treated
material is brought back into contact with the material to
treat the material at least one more time.
Subclass:
478
Combustion of gas or vapor:
This subclass is indented under subclass 467. Process wherein
the treating gas or vapor is subjected to burning after
contacting the treated material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
443 for the production of treating gas by combustion of a
fuel gas.
Subclass:
479
Combusted gas or vapor recirculated to treating chamber:
This subclass is indented under subclass 478. Process wherein
the products of combustion from the burning of the treating
gas or vapor are returned to the treating environment.
Subclass:
480
Filtering of gas or vapor:
This subclass is indented under subclass 467. Process wherein
the treating gas or vapor is directed through a purifying
medium to remove or separate particulate matter from the
treating gas or vapor.
Subclass:
481
Material thickness controlled:
This subclass is indented under subclass 443. Process wherein
the dimensions of a layer of treated material are regulated.
Subclass:
482
Material speed or quantity controlled:
This subclass is indented under subclass 443. Process wherein
the rate of motion or the amount of treated material is
regulated.
Subclass:
483
By moisture content of treated material:
This subclass is indented under subclass 482. Process wherein
the percentage of moisture contained in the treated material
regulates the speed or quantity of the treated material.
Subclass:
484
And temperature of material or chamber:
This subclass is indented under subclass 483. Process wherein
the temperature of the treated material or the temperature of
a treating chamber regulates the speed or quantity of the
treated material.
Subclass:
485
By temperature of material or chamber:
This subclass is indented under subclass 482. Process wherein
the temperature of the treated material or the temperature of
a treating chamber regulates the speed or quantity of the
treated material.
Subclass:
486
Timing of application of gas or vapor to treated material
based on drying variables:
This subclass is indented under subclass 443. Process wherein
the amount of time that the treating gas or vapor is applied
to the treated material is regulated as a result of (a)
measurements of drying parameters; (b) comparison of drying
parameters; (c) calculations based on drying parameters.
(1) Note. Drying parameters are basically defined as those
physical characteristics associated with the drying process
whose variability directly or indirectly affect the rate of
drying of a treated material.
Subclass:
487
Gas or vapor flow directing or control:
This subclass is indented under subclass 443. Process wherein
the location of application of the treating gas or vapor or
the quantity of treating gas or vapor is regulated.
Subclass:
488
Flow direction changes during treatment:
This subclass is indented under subclass 487. Process wherein
the point of application of the treating gas or vapor is
varied or changed during treatment.
Subclass:
489
Reversible flow:
This subclass is indented under subclass 488. Process wherein
the direction of flow of the treating gas or vapor onto the
treated material is directed to flow substantially opposite
to its initial flow direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
191 for apparatus using reversible gas or vapor flow.
Subclass:
490
Timed control:
This subclass is indented under subclass 489. Process wherein
the treating gas or vapor flow is reversed under the control
or influence of a clock.
Subclass:
491
Temperature or moisture content of treated material or
chamber controls or directs gas or vapor:
This subclass is indented under subclass 487. Process wherein
the temperature or humidity of the treated material affects
the point of application of the treating gas or vapor.
Subclass:
492
Gas or vapor flow varied during treatment:
This subclass is indented under subclass 487. Process wherein
the amount of gas or vapor applied to the treated material is
changed during the treating process.
Subclass:
493
Temperature of treating gas or vapor controlled:
This subclass is indented under subclass 443. Process wherein
the temperature of the treating gas or vapor is maintained or
varied to desired levels.
Subclass:
494
To prevent damage to material or system:
This subclass is indented under subclass 493. Process wherein
the temperature of the treating gas or vapor is maintained at
specified levels to prevent destruction to the treated
material or the apparatus that constitutes the system.
Subclass:
495
Temperature of gas or vapor regulated by other drying
variables:
This subclass is indented under subclass 493. Process wherein
the temperature of the gas or vapor is determined or
controlled as a result of (a) measurements of drying
parameters; (b) comparison of drying parameters; (c)
calculations based on drying parameters.
Subclass:
496
Multiple temperature levels of gas or vapor:
This subclass is indented under subclass 493. Process wherein
the treating gas or vapor is maintained at several constant
temperature levels during treatment.
Subclass:
497
Temperature of treating chamber regulated:
This subclass is indented under subclass 443. Process wherein
the temperature within the treating container is controlled.
Subclass:
498
With treated material motion:
This subclass is indented under subclass 443. Process wherein
the treated material is caused to have motion during
treatment (a) relative to the support on which it rests, (b)
relative to the enclosure in which it is located, or (c) the
various parts of the material have motion relative to each
other; such motion may be caused in any way, including the
action of the gas or vapor.
(1) Note. A car or conveyor that moves through the treating
chamber is considered to cause the treated material motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for gas or vapor current conveying or suspending the
treated material.
560 for apparatus for automatic control of rate of material
motion.
Subclass:
499
Rotating drum:
This subclass is indented under subclass 498. Process wherein
the material motion is produced by a revolving cylinder.
Subclass:
500
With conveyor:
This subclass is indented under subclass 498. Process wherein
the material is moved through a treating zone by a
transporting means.
Subclass:
501
Gas or vapor directed above and below material:
This subclass is indented under subclass 500. Process wherein
gas or vapor is applied to the upper and lower surfaces of
the treated material.
Subclass:
502
Gas or vapor directed below material:
This subclass is indented under subclass 500. Process wherein
gas or vapor is applied to the lower surface of the treated
material.
Subclass:
503
Concurrent gas or vapor flow:
This subclass is indented under subclass 498. Process wherein
the direction of flow of the treating gas or vapor and the
direction of movement of the treated material are the same.
Subclass:
504
Countercurrent gas or vapor flow:
This subclass is indented under subclass 498. Process wherein
the direction of flow of the treating gas or vapor and the
direction of movement of the treated material are opposite to
each other.
Subclass:
505
Gravity flow of material:
This subclass is indented under subclass 504. Process wherein
the treated material is conveyed through a treating zone by
gravity-induced motion.
Subclass:
506
Transverse flow of gas or vapor:
This subclass is indented under subclass 498. Process wherein
the treating gas or vapor flows across the treated material
perpendicular to the direction of travel of the material.
Subclass:
507
Treating gas or vapor drawn through material:
This subclass is indented under subclass 443. Process wherein
the treating gas or vapor flows through the treated material
normally under the influence of a vacuum.
Subclass:
508
Gas or vapor directed above and below treated material:
This subclass is indented under subclass 443. Process wherein
the treating gas or vapor is directed to upper and lower
surfaces of the treated material.
Subclass:
509
Gas or vapor directed below treated material:
This subclass is indented under subclass 443. Process wherein
the treating gas or vapor is directed to the lower surface of
the treated material.
Subclass:
510
Gas or vapor directed above treated material:
This subclass is indented under subclass 443. Process wherein
the treating gas or vapor is directed to the upper surface of
the treated material.
Subclass:
511
Natural ambient air drying of material:
This subclass is indented under subclass 443. Process wherein
the treated material is dried by exposure to the encircling
air.
Subclass:
512
Solar assisted:
This subclass is indented under subclass 511. Process wherein
passive sun energy is applied to the treated material.
Subclass:
513
Heat conserving:
This subclass is indented under subclass 443. Process
including steps for preserving heat.
(1) Note. This may be done in any way, as by exchanging heat
between incoming and outgoing gas and vapor or by burning the
discharged gas or vapor and using the evolved heat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
86 for apparatus for other modes of heat conservation, and
see the notes there.
427 for other modes of heat conservation.
Subclass:
514
Exhaust gas or vapor from treatment zone heats treating gas
or vapor:
This subclass is indented under subclass 513. Process wherein
the treating gas or vapor is heated by direct or indirect
contact with dispelled gas from treating zone.
Subclass:
515
Heat pump or recompression increases heating effect:
This subclass is indented under subclass 514. Process wherein
a heat pump or a compressor is used to increase the energy
level of the exhausted gas prior to its heat exchange with
the treating gas or vapor entering the treating zone.
Subclass:
516
Special gas or vapor:
This subclass is indented under subclass 443. Process in
which a gas or vapor is used that is other than atmospheric
air.
(1) Note. Where there are sequential treatments by means of
gas or vapor at least one treatment must be by a gas or vapor
other than atmospheric air.
SEE OR SEARCH THIS CLASS, SUBCLASS:
67 for a special gas used with or generated by infrared
energy.
subclasses 446+ for treating the contact gas or vapor.
Subclass:
517
Vapor:
This subclass is indented under subclass 516. Process in
which a vapor is used.
(1) Note. It may be used either in a sequence with a gas or
alone. When used in sequence with a gas, the gas may be air.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 402+ for use of vapor under vacuum or
superatmospheric pressure.
Subclass:
518
Piling or arranging material treated:
This subclass is indented under subclass 443. Process
directed to the piling, supporting, or arranging of the
material treated in such a manner as to promote contact of
the treating gas or vapor.
SEE OR SEARCH CLASS:
201, Distillation: Processes, Thermolytic, subclass 40 for a
carbonizing process directed to the step of arranging the
charge in the retort.
414, Material or Article Handling, subclass 8 for apparatus
for placing articles in superposed abutment or in mutually
sustaining relation in a horizontally extending row, or for
shaping a formed group.
432, Heating, subclass 6 for a process of heating including
stacking or aligning objects.
Subclass:
519
Conductive heating:
This subclass is indented under subclass 282. Process wherein
the treated material is dried by direct contact with a heated
surface.
Subclass:
520
Within drum:
This subclass is indented under subclass 519. Process wherein
the treated material is enclosed within a cylinder structure
for treatment.
Subclass:
521
With evolved gas or vapor treatment:
This subclass is indented under subclass 519. Process wherein
the gases generated during the conductive drying process are
treated.
Subclass:
522
Solar drying:
This subclass is indented under subclass 282. Process wherein
energy from the sun is the primary source of energy to
conduct the drying process.
Subclass:
523
APPARATUS:
This subclass is indented under the class definition.
Device.
Subclass:
524
With automatic control:
This subclass is indented under subclass 523. Apparatus
combined with means to sense a condition or change of
condition and cause a control operation, including timing
means which is other than the drive means for the machine.
(1) Note. The "condition" sensed may be any condition or
property of the material undergoing treatment, of the
treating medium, or of the operation of the apparatus.
(2) Note. Unless otherwise clearly indicated by title and
definition, classification is on the basis of the condition
controlled, and not the means employed or the condition
sensed, for example, humidistatic means to control a heater
is in subclass 557.
(3) Note. For mere periodic sequential or other operation of
the machine due to its drive mechanism or to manual
intervention, see appropriate apparatus subclasses of this
class, such as 87, 143+, and 191.
(4) Note. Apparatus disclosed for all subject matter
elsewhere classified in this class is appropriately
cross-referenced except to subclasses 467+, which must be
searched for complete search on treatment of gas or vapor.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclasses 335+ for hygrometers
and hygrostats.
165, Heat Exchange, subclasses 200+ for an automatically
controlled heat exchanger.
236, Automatic Temperature and Humidity Regulation, for
temperature and humidity responsive means and systems.
237, Heating Systems, subclasses 2+ for an automatically
controlled heating system.
337, Electricity: Electrothermally or Thermally Actuated
Switches, subclasses 98+ for a thermostatic switch.
374, Thermal Measuring and Testing, subclasses 100+ for a
thermometer.
Subclass:
525
By web breaking:
This subclass is indented under subclass 524. Apparatus
having means responsive to severing a piece of material of
indeterminate length.
Subclass:
526
Of plural operations:
This subclass is indented under subclass 524. Apparatus in
which two or more conditions or operations are controlled.
(1) Note. The only exceptions are subclass 572, which has
starting or stopping, and subclass 573, which has feeding or
discharging.
(2) Note. The patents in this subclass and the indented
subclasses are cross-referenced to the appropriate subclass
for single operations, except subject matter in subclasses
535+ is not cross-referenced into subclasses 538+, 557, and
548.
Subclass:
527
Of specific operational sequence:
This subclass is indented under subclass 526. Apparatus
having means for causing a plurality of the same or different
operations on the material to occur in proper order.
(1) Note. For example, the operations may be measuring the
material, feeding to the dryer or contact apparatus, applying
the drying medium, discharging and cooling.
Subclass:
528
Using specific moisture sensor structure:
This subclass is indented under subclass 527. Apparatus
having the components of the means to determine the amount of
liquid remaining in the material.
Subclass:
529
With photoelectric device:
This subclass is indented under subclass 527. Apparatus
combined with a means to provide a light and a means to sense
the amount of light.
Subclass:
530
With vacuum sensor:
This subclass is indented under subclass 527. Apparatus
combined with a means to sense a reduced pressure in the
treating apparatus.
Subclass:
531
With threshold circuit device:
This subclass is indented under subclass 527. Apparatus
combined with a component in a control circuit which becomes
conductive only with the application of a certain minimum of
electromotive force.
Subclass:
532
Gaseous tube (e.g., neon):
This subclass is indented under subclass 531. Apparatus
wherein the conductive element is a tube filled with a
conducting gas.
Subclass:
533
Silicon-controlled rectifier (SCR):
This subclass is indented under subclass 531. Apparatus
wherein the conductive device is a silicon-controlled
rectifier.
Subclass:
534
With door switch:
This subclass is indented under subclass 527. Apparatus
having an element that makes or breaks a control circuit that
is mounted on the door of the apparatus.
Subclass:
535
Having two of heater, contacting gas humidity, or gas
mixing:
This subclass is indented under subclass 526. Apparatus in
which at least two of, (a) the heating means, (b) humidity of
the gas that contacts the material, or (c) mixing of at least
two gases are controlled.
SEE OR SEARCH THIS CLASS, SUBCLASS:
548 for automatic control of air mixing only, even though
the alleged result is temperature or contact gas humidity
control.
subclasses 549+ and 556, for control of heater only.
557 for control of contacting gas humidity.
Subclass:
536
With weight measuring means:
This subclass is indented under subclass 535. Apparatus
wherein a means is provided to determine the heaviness of the
object being acted upon.
Subclass:
537
Having wet bulb and dry bulb thermometers:
This subclass is indented under subclass 535. Apparatus
wherein wet bulb and dry bulb thermometers are used to
determine relative humidity or dew point.
Subclass:
538
With means to produce reduced or negative pressure:
This subclass is indented under subclass 535. Apparatus
wherein a means is provided to lessen the pressure or create
a vacuum around an object being treated.
Subclass:
539
With fuel burner:
This subclass is indented under subclass 535. Apparatus
wherein the heater has a means to combust fuel.
Subclass:
540
Having plural compartments:
This subclass is indented under subclass 535. Apparatus
wherein multiple enclosures for treating an object are
provided.
Subclass:
541
With delivery nozzle for contacting gas or vapor:
This subclass is indented under subclass 535. Apparatus
wherein an outlet for a discharge of the contacting gas or
vapor is provided.
Subclass:
542
With means to increase humidity of contacting gas or vapor:
This subclass is indented under subclass 535. Apparatus
wherein a means to increase the water vapor content of the
contacting gas or vapor is provided.
Subclass:
543
With heater:
This subclass is indented under subclass 526. Apparatus
wherein one of the operations controlled is the means to
apply heat.
Subclass:
544
And fire control means:
This subclass is indented under subclass 543. Apparatus
having a means to suppress or extinguish a fire in the
apparatus.
Subclass:
545
And conveyor:
This subclass is indented under subclass 543. Apparatus
wherein one of the operations controlled is the means to
transport the material being treated.
Subclass:
546
And blower:
This subclass is indented under subclass 543. Apparatus
wherein one of the operations being controlled is the means
to propel the gas or vapor doing the treating.
Subclass:
547
And drive motor:
This subclass is indented under subclass 543. Apparatus
wherein one of the operations being controlled is the power
means for the operation of the machine.
Subclass:
548
Of gas mixing:
This subclass is indented under subclass 524. Apparatus in
which the mixing of two or more gases (with or without their
contained vapors) is controlled.
Subclass:
549
Of heater:
This subclass is indented under subclass 524. Apparatus in
which the action of the heating means is controlled.
(1) Note. Control of the pressure or flow of steam when used
as an individual heating medium is treated as heater
control.
(2) Note. Automatic heater cut-offs and starters are here.
(3) Note. Since a temperature change of a gas without
changing the moisture content results in a change in the
relative humidity, control of heating by humidostatic means
is placed in this subclass (and not subclass 557) even though
a change in humidity is the claimed result.
SEE OR SEARCH THIS CLASS, SUBCLASS:
119 and the notes thereto.
SEE OR SEARCH CLASS:
237, Heating Systems, subclass 9 and 10 for automatic
control of a steam heating system.
432, Heating, subclass 49 for the automatic control of heat
generation or transmission in a material heating apparatus
not specialized to drying or having a specific heat
generator.
Subclass:
550
Sensor engages material:
This subclass is indented under subclass 549. Apparatus
including a means that touches the substance being dried.
Subclass:
551
Having burner control:
This subclass is indented under subclass 549. Apparatus
wherein the fuel combustor is regulated.
Subclass:
552
By steam pressure or temperature:
This subclass is indented under subclass 549. Apparatus
wherein the heater is controlled by varying the force of
heated water vapor or its temperature.
Subclass:
553
Electric heater:
This subclass is indented under subclass 549. Apparatus
wherein the heating is performed by an electric resistance
element.
Subclass:
554
Of heater blower:
This subclass is indented under subclass 549. Apparatus
wherein a means is provided to regulate a fan.
Subclass:
555
With means to remove excess heat:
This subclass is indented under subclass 549. Apparatus
wherein a means is provided to eliminate an overabundance of
heat.
Subclass:
556
By web or strand tension or breaking:
This subclass is indented under subclass 549. Apparatus in
which means responsive to degree of web or strand stretching
or separation causes a heating control operation.
SEE OR SEARCH CLASS:
226, Advancing Material of Indeterminate Length, subclasses
10+ for a material-advancing device that is responsive to
the tension of a web or strand.
Subclass:
557
Of contacting gas humidity:
This subclass is indented under subclass 524. Apparatus in
which the moisture content or relative humidity of the gas or
vapor that contacts the material being treated is
controlled.
(1) Note. Humidostatic control of heaters for the treating
gas or vapor is in subclasses 549+ and 556, even though a
change in humidity is the claimed result.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 467+ and appropriate indented subclasses, for
other treatment of treating gas or vapor that is not
automatically controlled.
548 for mixing two gas streams even though a change in
humidity is the claimed result.
Subclass:
558
Of gas or vapor pressure in treating enclosure:
This subclass is indented under subclass 524. Apparatus in
which the force of the gas or vapor within the treating
chambers is controlled.
(1) Note. This subclass includes blow-out panels or valves
opened by pressure, including pressure caused by fires or
explosions.
SEE OR SEARCH CLASS:
137, Fluid Handling, subclasses 494+, particularly subclasses
505+ for the fluid-pressure regulator subcombination.
Subclass:
559
Subatmospheric pressure:
This subclass is indented under subclass 558. Apparatus
wherein the pressure in the enclosure is below atmospheric or
under a vacuum.
Subclass:
560
Of rate of treated material motion:
This subclass is indented under subclass 524. Apparatus in
which the velocity of the material during drying or gas or
vapor contact is controlled.
SEE OR SEARCH CLASS:
432, Heating, subclass 45 for automatic control of or by
means sensing or controlling work movement in heating
apparatus not specialized to drying, or having specific heat
generating structure.
Subclass:
561
Web or strand:
This subclass is indented under subclass 560. Apparatus
wherein the material being treated is of indeterminate
length.
Subclass:
562
Of time period:
This subclass is indented under subclass 524. Apparatus
wherein a means is provided which regulates the time interval
of a treating or machine operation.
(1) Note. Where there is no timing means other than the
drive means for the apparatus, see the appropriate type of
apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
191 for reverse or pulsating treating gas or vapor flow
which maybe caused periodically by machine connections.
SEE OR SEARCH CLASS:
432, Heating, subclass 51 for the control of nondrying
heating apparatus by timing, programming, or cycling control
means, or of a drying means having a specific combustion heat
generator.
Subclass:
563
By timing motor and cam:
This subclass is indented under subclass 562. Apparatus
wherein the interval is controlled by an electrical motor and
an eccentric.
Subclass:
564
By plural timers:
This subclass is indented under subclass 563. Apparatus
wherein more than one timer is used.
Subclass:
565
Of flow of gas or vapor treating fluid:
This subclass is indented under subclass 524. Apparatus
wherein the movement of the material treating gas or vapor is
controlled.
(1) Note. Flow control includes starting flow, stopping
flow, regulating rate of flow, or any other control of flow.
(2) Note. Complete the search in this class (34), subclass
562, for timing of flow, including timed reversal of flow,
and subclasses 535+ and 548 for gas mixing.
SEE OR SEARCH CLASS:
432, Heating, subclass 48 for nondrying heating apparatus or
apparatus having a specific heat generator with automatic
means controlling the cooling, dilution, withdrawal, by-pass,
or circulation of work chamber atmosphere.
Subclass:
566
With diverter means to alternate flow paths:
This subclass is indented under subclass 565. Apparatus
wherein a means is provided that redirects treating gas or
vapor from one flow path to another.
Subclass:
567
Exhaust controlled by solvent concentration:
This subclass is indented under subclass 565. Apparatus
wherein the removal of exiting treating gas or vapor is
controlled by the amount of a solvent contained in the
treating gas or vapor.
Subclass:
568
Steam pressure controlled:
This subclass is indented under subclass 565. Apparatus
wherein the force per unit area of heated vapor which treats
the material is regulated.
Subclass:
569
Of circulation means:
This subclass is indented under subclass 565. Apparatus
having means to regulate the means of moving the gas or
vapor.
Subclass:
570
With flow control valve:
This subclass is indented under subclass 565. Apparatus
wherein the flow of gas or vapor treating fluid is regulated
by a device which opens or closes.
Subclass:
571
With flow control dampers at outlet:
This subclass is indented under subclass 565. Apparatus
wherein adjustable plates modify the flow of gas or vapor
treating fluid at an orifice inside the treating chamber.
Subclass:
572
Of starting or stopping:
This subclass is indented under subclass 524. Apparatus
having means to (a) begin the operation of the machine, (b)
finish operation of the machine, or (c) both.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 526+ for the above combined with other automatic
control operations.
Subclass:
573
Of treated material feeding or discharging:
This subclass is indented under subclass 524. Apparatus
having means to (a) control feeding of material undergoing
treatment, (b) control discharge of such material, or (c)
both.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 526+ for the above combined with other automatic
control operations.
SEE OR SEARCH CLASS:
221, Article Dispensing, subclasses 9+ for an article
dispensing (feeding) device, per se, not otherwise provided
for, including automatic control.
222, Dispensing, subclasses 5+ for automatic control of
dispensing feeder.
Subclass:
574
Controlled by weight:
This subclass is indented under subclass 573. Subject matter
wherein the means for feeding or discharging is powered after
an accumulation of a certain mass of the material being
treated.
Subclass:
575
Controlled by temperature:
This subclass is indented under subclass 573. Subject matter
wherein the means for feeding or discharging is powered
depending on the temperature of the material.
Subclass:
576
With fluid current conveying of treated material:
This subclass is indented under subclass 523. Subject matter
wherein the treated material is moved by a fluid flow from
one part of the apparatus to another, the arrangement being
such that the material would not be so transported in the
absence of the fluid flow.
(1) Note. Since this subclass usually of necessity includes
drying plus material separation, it includes all fluid
current type dryers, including plural operations on the
material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 359+ for the process of fluid current
conveying.
376 for a device that recirculates material.
subclasses 640+ for a device supporting or guiding a web,
cord, or strand by a gas or vapor.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, subclasses 467+ and
516+ for an enclosed modified atmosphere and fluid
application apparatus respectively, including fluid moving
means.
159, Concentrating Evaporators, subclass 3, 4.1+, and 16.1+
for a similar device relating to a concentrating evaporator.
266, Metallurgical Apparatus, subclass 251 for ore treating
apparatus having a heated zone within which pulverulent
material is suspended within a flowing fluid.
406, Conveyors: Fluid Current, and see the search notes under
the main definition for other fluid current conveyors.
426, Food or Edible Material: Processes, Compositions, and
Products, subclass 94 for process of coating foods involving
suspension of particulate material in a gaseous medium.
432, Heating, subclass 58 for residual heating apparatus in
which heating gas conveys, agitates, scatters, or
disintegrates the work.
Subclass:
577
Downward fluid flow impinging solid floor:
This subclass is indented under subclass 576. wherein a
fluidizing current is in a downward direction where it
impacts a hard surface and reflects up through the material.
Subclass:
578
Having tubular heat exchanger:
This subclass is indented under subclass 576. Subject matter
wherein the fluidly conveyed material contacts a pipe filled
with a heat transfer material.
Subclass:
579
With means to vary gas or vapor flow:
This subclass is indented under subclass 576. Subject matter
having a means to control the gas or vapor current, such as a
valve.
Subclass:
580
With additional conveying means:
This subclass is indented under subclass 576. Subject matter
having an extra transporting means besides the fluid current
conveying means.
Subclass:
581
Suction conveyor:
This subclass is indented under subclass 580. Subject matter
wherein the additional conveying means uses a vacuum.
Subclass:
582
With specific gas distributor:
This subclass is indented under subclass 576. Subject matter
that has a gas delivery means having special details.
Subclass:
583
Having angled floor or wall:
This subclass is indented under subclass 582. Subject matter
wherein the gas or vapor distributor comprises a floor or
wall that is inclined from the horizontal or the vertical.
Subclass:
584
Having thermal expansion adjustment:
This subclass is indented under subclass 582. Subject matter
provided with a means to correct for an enlarging of the
distributor caused by heat.
Subclass:
585
Gas or vapor delivery nozzle:
This subclass is indented under subclass 582. Subject matter
wherein the gas distributor is a projecting opening.
Subclass:
586
With means to agitate or comminute material:
This subclass is indented under subclass 576. Subject matter
combined with a means to mix or grind the treated material.
Subclass:
587
Gas or vapor presses material against screen or sieve:
This subclass is indented under subclass 576. Subject matter
wherein the conveying gas or vapor pushes the treated
materials against a rigid mesh.
Subclass:
588
With baffle or deflector to adjust material flow:
This subclass is indented under subclass 576. Subject matter
wherein the flow of the treated material is controlled by a
variable or fixed obstruction in the path of the material.
Subclass:
589
With plural treating zones or compartments:
This subclass is indented under subclass 576. Subject matter
wherein the conveyed material flows through more than one
treating area or chamber.
Subclass:
590
Serpentine path for material:
This subclass is indented under subclass 589. Subject matter
wherein the flow path through the plural treating zones is
S-shaped.
Subclass:
591
With material separator:
This subclass is indented under subclass 576. Subject matter
having a means to remove the treated material from the
conveying fluid.
Subclass:
592
Plural cyclone separators:
This subclass is indented under subclass 591. Subject matter
wherein the treated material is removed from the conveying
fluid by more than one centrifugal separator.
Subclass:
593
With mechanical rotating element:
This subclass is indented under subclass 576. Subject matter
wherein the treated material is suspended in a fluid by a
physically revolving component.
Subclass:
594
Using rotary gas current:
This subclass is indented under subclass 576. Subject matter
wherein the treated material is suspended by a revolving
fluid flow.
Subclass:
595
With drum or receptacle enclosing housing:
This subclass is indented under subclass 132. Subject matter
in which the drum or receptacle is totally or partially
contained in a surrounding enclosure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
139 for such a housing without heating means.
Subclass:
596
Combined washer-dryer:
This subclass is indented under subclass 595. Subject matter
in which the device can be used to both clean and dry the
material.
Subclass:
597
With material conditioner dispenser:
This subclass is indented under subclass 595. Subject matter
combined with a distributor to supply an additive to improve
the treated material.
Subclass:
598
And heat retaining material:
This subclass is indented under subclass 595. Subject matter
including a substance that holds heat for later use.
Subclass:
599
And material tumbling assisting means:
This subclass is indented under subclass 595. Subject matter
including ribs, vanes, etc. in the drum to lift or agitate
the material being treated.
Subclass:
600
And stationary trays in rotatable drum:
This subclass is indented under subclass 595. Subject matter
including nonmoving supports inside the drum for the treated
material.
Subclass:
601
And supporting, driving, sealing, or bearing means for drum:
This subclass is indented under subclass 595. Subject matter
including means to bear the weight of the drum; means to
power the drum for movement; means to close the drum off from
other parts of the device; or journal means to support the
drum for rotation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
242 for seals for use in dryers in general.
SEE OR SEARCH CLASS:
248, Supports, for support of general utility.
277, Seal for a Joint or Juncture, for a generic sealing
means or process, cross-reference art collection 903 for seal
for a rotating kiln or drum.
384, Bearings, for bearings of general utility.
Subclass:
602
Specific drum structure:
This subclass is indented under subclass 595. Subject matter
relating to explicit details of the drum.
Subclass:
603
Specific housing structure:
This subclass is indented under subclass 595. Subject matter
relating to explicit details of the housing.
Subclass:
604
Including gas or vapor circulating means:
This subclass is indented under subclass 595. Subject matter
including means to move the gas or vapor through the drum or
housing.
Subclass:
605
Suction means:
This subclass is indented under subclass 604. Subject matter
wherein the means to move the gas or vapor is a means to
create a negative or reduced pressure.
Subclass:
606
And gas or vapor flow regulating means:
This subclass is indented under subclass 604. Subject matter
also including a means to control or direct the gas or vapor
flow such as a valve, shutter, damper, diverter, etc.
Subclass:
607
And conduit to deliver gas or vapor to drum:
This subclass is indented under subclass 604. Subject matter
also including a duct or pipe that conveys the gas or vapor
directly to the drum.
Subclass:
608
Vertical gas or vapor flow:
This subclass is indented under subclass 604. Subject matter
also including a circulation of the gas or vapor from top to
bottom or bottom to top.
Subclass:
609
Axial gas or vapor flow:
This subclass is indented under subclass 604. Subject matter
wherein a circulation of the gas or vapor is in the line
about which the drum rotates.
Subclass:
610
Radial gas or vapor flow:
This subclass is indented under subclass 604. Subject matter
wherein a circulation of the gas or vapor is in a direction
from the axis of rotation to the walls of the drum, like the
spoke of a wheel.
Subclass:
611
Sheet, web, or strand:
This subclass is indented under subclass 523. Subject matter
for the treatment and handling of articles such as a broad,
thin piece of material; a woven textile fabric; or a
continuous fiber or filament such as a cable, rope, thread,
or yarn.
(1) Note. This subclass and the following subclasses include
means such as racks for holding planar articles such as
lumber in spaced relation but the mere separation of such
article in stacks that are treated in an enclosure is
excluded, being found in subclasses 201+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
103 and 104+, for a sheet, web, or strand that constitutes a
hollow article and is treated and handled as a hollow
article.
subclasses 201+ for a house, kiln, and container, including
a conveyor, disclosed for handling a sheet, web, or strand
but adapted to handle other material, particularly subclass
205 for superposed roller-type conveyors disclosed for
handling veneer or a board.
Subclass:
612
Sheet elevator type:
This subclass is indented under subclass 611. Subject matter
including a mechanism to raise or lower a sheet or other
planar sheetlike material and having means peculiar to the
handling of a sheet individually.
(1) Note. The sheet handling means may be in the form of a
sheet gripper, flier, sheet, or can lid edge engaging screw,
etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
147 for means moving material, including sheetlike material,
in a spiral path.
189 and 190, for similar apparatus even though disclosed for
handling a sheet but having no means for individually
handling the sheet.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, for a conveyor, or plural
conveyors, having a platform, gripper, or opposed surfaces
that move vertically and thus provide means suitable for
raising or lowering sheet material, including subclass 346.1,
463.1+, 604+, 625, 626.1+, 663, and 793+.
Subclass:
613
Coacting parallel threaded members:
This subclass is indented under subclass 612. Subject matter
wherein the elevator mechanism is made up of two
nondiverging, screwlike members wherein the material is
positioned between the two members and in the threads such
that the material is elevated by turning the screws.
Subclass:
614
Sheet on edge:
This subclass is indented under subclass 611. Subject matter
for handling and treatment of planar pieces resting on their
thin sides.
(1) Note. The patents herein in the main include a rack or
conveyor holding sheet material on edge.
Subclass:
615
Stationary support:
This subclass is indented under subclass 614. Subject matter
including a nonmoving means on which the material rests.
Subclass:
616
Rotary wheellike conveyor:
This subclass is indented under subclass 614. Subject matter
wherein the means to hold a sheet or edge is a revolving disk
or ring with spokes that support the material.
Subclass:
617
Endless conveyor with fingers:
This subclass is indented under subclass 614. Subject matter
wherein the means to hold a sheet or edge is a closed band
travelling in an endless path having upstanding appendages.
Subclass:
618
For flexible sheet, web, or strand:
This subclass is indented under subclass 611. Subject matter
including means to treat a pliable sheet, web, or strand such
as textile, paper, cord, or filament.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 184+ for a rotary rack not limited to sheet,
web, or strand.
239 for a plate on which sheetlike material is placed.
240 for a supporting rod.
SEE OR SEARCH CLASS:
26, Textiles: Cloth Finishing, subclass 81, 92, or 106 for
drying or heating textiles combined with positive stretching
means.
69, Leather Manufactures, subclass 19.
211, Supports: Racks, appropriate subclasses.
242, Winding, Tensioning, or Guiding, subclass 127.
254, Implements or Apparatus for Applying Pushing or Pulling
Force, subclasses 199+ for a similar device not including
any positive drying means.
432, Heating, subclass 59 for a residual heater flexing,
looping, or coiling a sheet, web, or strand.
Subclass:
619
Including horizontal support:
This subclass is indented under subclass 618. Subject matter
including a level platform.
Subclass:
620
Including roller-type conveyor:
This subclass is indented under subclass 618. Subject matter
including rotating cylinders that move the material.
Subclass:
621
Including means to suspend work:
This subclass is indented under subclass 618. Subject matter
including a means to let the material hang free.
Subclass:
622
Portable or collapsible:
This subclass is indented under subclass 621. Subject matter
wherein the treating device can be moved from place to place
or folded compactly.
Subclass:
623
Running length:
This subclass is indented under subclass 618. Subject matter
wherein the web or strand is a moving continuous length.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 110+ for an external rotary drum where the
sheet, web, or strand is passed over the external surface of
a drum.
SEE OR SEARCH CLASS:
38, Textiles: Ironing or Smoothing.
68, Textiles: Fluid Treating Apparatus, particularly
subclasses 157+.
226, Advancing Material of Indeterminate Length, for feeding
material without utilizing the leading or trailing ends to
effect movement of the material.
Subclass:
624
With contact heater:
This subclass is indented under subclass 623. Subject matter
wherein the material moves across a surface that has a means
to increase its temperature.
Subclass:
625
Winding reel:
This subclass is indented under subclass 623. Subject matter
in which the material is wrapped up on a rotating member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
94 for devices interwinding a spacing sheet and a sheet to
be dried.
subclasses 110+ for rotary drums of the external drum
type.
629 647, and 657, for treating material travelling a tortuous
path.
SEE OR SEARCH CLASS:
43, Fishing, Trapping, and Vermin Destroying, subclass 20
and 21 for a fishing rod reel.
242, Winding, Tensioning, or Guiding, particularly subclasses
370+ for a reel having no added means as a heater or gas or
vapor contact producing means to cause drying.
Subclass:
626
With fluent heating means inside reel:
This subclass is indented under subclass 625. Subject matter
wherein the reel has a means to circulate a heating fluid in
its interior.
Subclass:
627
Plural webs or strands:
This subclass is indented under subclass 623. Subject matter
including means to handle and treat more than one web or
strand.
SEE OR SEARCH THIS CLASS, SUBCLASS:
144 for feeding sheetlike material between plural press
couples.
Subclass:
628
With means to separate individual webs or strands:
This subclass is indented under subclass 627. Subject matter
including means to partition multiple webs or strands into
single webs or strands.
Subclass:
629
With gas or vapor circulation for contact with treated
material:
This subclass is indented under subclass 623. Subject matter
including means to impinge the treated material with a gas or
vapor or to distribute a gas or vapor.
Subclass:
630
Having solvent chamber:
This subclass is indented under subclass 629. Subject matter
including a compartment that contains a gas or vapor solution
that is capable of dissolving an impurity on the material.
Subclass:
631
Having means to adjust relative distance between distributor
and material:
This subclass is indented under subclass 629. Subject matter
including means to vary the interval between the material and
a means to deliver a gas or vapor to the material.
Subclass:
632
Having means to produce turbulence in gas or vapor:
This subclass is indented under subclass 629. Subject matter
including a means to generate a nonlaminar flow of a gas or
vapor.
Subclass:
633
Having baffle redirect gas or vapor flow:
This subclass is indented under subclass 629. Subject matter
including a partition or shutter to provide alternative flow
paths for gas or vapor.
Subclass:
634
Having sealing means:
This subclass is indented under subclass 629. Subject matter
including means to prevent the escape of gas or vapor from a
treating chamber.
Subclass:
635
Including suction means:
This subclass is indented under subclass 629. Subject matter
including a vacuum pump or means to create a reduced
pressure.
Subclass:
636
Including plural chambers or zones:
This subclass is indented under subclass 629. Subject matter
including more than one treating compartment or treating
area.
Subclass:
637
Having drive roller:
This subclass is indented under subclass 629. Subject matter
including a power cylinder to propel the web or strand
through a treating area.
Subclass:
638
Including gas or vapor nozzle or distributor outlet:
This subclass is indented under subclass 629. Subject matter
including a projecting discharge opening or an aperture which
dispenses a gas or vapor.
Subclass:
639
Having gas or vapor flow transverse to treated material
movement:
This subclass is indented under subclass 629. Subject matter
including a gas or vapor flow which is perpendicular to the
direction in which the material is moving.
Subclass:
640
Fluid current support or guide:
This subclass is indented under subclass 629. Subject matter
including means to direct or suspend the running length by
means of a fluid blast or flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
117 and 120, for means for threading, stripping, or guiding
a web in conjunction with drum dryers including fluid current
guiding means.
subclasses 576+ for similar apparatus for treating other
material, and subclasses 359+ for a similar process.
SEE OR SEARCH CLASS:
226, Advancing Material of Indeterminate Length, may include
a nominal recitation of a supply or take-up coil (e.g., less
than a support for such a coil or a cooperative relationship
between a tension or exhaust detector and reel driving or
reel stopping means, etc.), subclass 97.1 for fluid current
means to advance the material.
242, Winding, Tensioning, or Guiding, for more than a nominal
supply or take-up coil structure (e.g., a support for such a
coil, a cooperative relationship between a tension or exhaust
detector and reel driving or reel stopping means, etc.),
subclass 615.11 a residual locus for a material fluid
suspension guide or guard.
Subclass:
641
Having airfoil or Coanda nozzle:
This subclass is indented under subclass 640. Subject matter
including a surface that controls the gas or vapor flow or a
nozzle that establishes a laminar flow along a surface that
remains locked along the surface means unless disturbed.
Subclass:
642
Having nozzles around circular manifold:
This subclass is indented under subclass 640. Subject matter
including gas or vapor flow distributors positioned on the
circumference of a drum.
Subclass:
643
Having nozzles on opposite sides of web:
This subclass is indented under subclass 640. Subject matter
including gas or vapor distributors situated to face each
other and different sides of the web.
Subclass:
644
Adjustable distance between opposed nozzles:
This subclass is indented under subclass 643. Subject matter
including means to vary the spacing between facing nozzles.
Subclass:
645
Suspended loops:
This subclass is indented under subclass 629. Subject matter
in which the material is supported in hanging loops over
rods.
SEE OR SEARCH THIS CLASS, SUBCLASS:
647 for means to guide material in a zigzag path in which
the material is positively guided at each bend.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 681 for a conveyor
having load-suspending members extending between parallel
drive means such as endless belts.
226, Advancing Material of Indeterminate Length, especially
subclasses 104+ for a festooning device, per se.
Subclass:
646
Edge holding means:
This subclass is indented under subclass 629. Subject matter
including means to grasp the material by its edges as by
gripping or impaling.
SEE OR SEARCH CLASS:
26, Textiles: Cloth Finishing, subclasses 52+ and 92 for
fabric stretching combined with drying or heating. The line
is: Class 26 takes fabric stretching combined with drying or
heating when special means or steps are provided in addition
to the stretching caused by the feed of the material through
the machine.
198, Conveyors: Power-Driven, subclass 468.01 and 469.1+ for
a conveyor having load gripping members, and subclasses 692+
for a conveyor having a load impaler.
Subclass:
647
Zigzag runs of treated material:
This subclass is indented under subclass 629. Subject matter
including means to guide the running length in a tortuous
path having a guiding means at each bend.
SEE OR SEARCH CLASS:
68, Textiles: Fluid Treating Apparatus, particularly subclass
158, 159, and 160.
226, Advancing Material of Indeterminate Length, may include
a nominal recitation of a supply or take-up coil (e.g., less
than a support for such a coil or a cooperative relationship
between a tension or exhaust detector and reel driving or
reel stopping means, etc.), subclass 118.1 for plural
material moving means having intermediate storage.
Subclass:
648
Including material tension adjusting means:
This subclass is indented under subclass 647. Subject matter
including means to vary the amount of stretch applied to the
material.
Subclass:
649
Including gas or vapor recirculation:
This subclass is indented under subclass 647. Subject matter
including means to capture and reuse some of the treating gas
or vapor.
Subclass:
650
Including endless conveyors:
This subclass is indented under subclass 647. Subject matter
wherein the zigzag pattern for the running length is composed
of a series of closed bands travelling in a boundless path.
Subclass:
651
Plural zones or chambers:
This subclass is indented under subclass 647. Subject matter
wherein the material passes through more than one treating
area or compartment.
Subclass:
652
Elongated thin gas or vapor stream:
This subclass is indented under subclass 629. Subject matter
including means to direct a blast of gas upon, or draw gas
over the material in a relatively fine slender stream.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 640+ for apparatus where the blast guides or
floats the web.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 300.1
and particularly 303+, 316.1, and 405+, for blast or suction
removal of foreign material such as water from a work piece,
and see the reference to Class 15 in (3) Note in the main
class definition of this class for a statement of the line.
Subclass:
653
Including distributor comprising tube with elongated slot:
This subclass is indented under subclass 652. Subject matter
including a cylinder having a long thin slit as an exit for
the gas or vapor.
Subclass:
654
Including distributor comprising perforated plate:
This subclass is indented under subclass 652. Subject matter
wherein the means to create the elongated gas or vapor stream
is a sheet having multiple apertures.
Subclass:
655
Including distributor having elongated slot:
This subclass is indented under subclass 652. Subject matter
wherein the means to create the elongated gas or vapor stream
is a long thin slit.
Subclass:
656
Plural associated elongated slots:
This subclass is indented under subclass 655. Subject matter
wherein the means to create the elongated gas or vapor stream
are plural long thin slits that coact to produce one stream.
Subclass:
657
Zigzag runs of treated material:
This subclass is indented under subclass 623. Subject matter
including means to guide the running length in a tortuous
path having a guiding means at each bend.
SEE OR SEARCH CLASS:
226, Advancing Material of Indeterminate Length, may include
a nominal recitation of a supply or take-up coil (e.g., less
than a support for such a coil or a cooperative relationship
between a tension or exhaust detector and reel driving or
reel stopping means, etc.), subclass 118.1 for plural
material moving means having intermediate storage.
Subclass:
658
Endless conveyor or movable gripper:
This subclass is indented under subclass 618. Subject matter
including either (a) a boundless transport means for the
sheet, web, or strand material, or (b) means to grasp the
material where such means are mounted for motion and driven
by the device, or both.
SEE OR SEARCH CLASS:
198, Conveyors: Power-Driven, subclass 468.01 and 469.1+ for
a conveyor having load gripping members, and subclasses 804+
for an endless belt conveyor.
Subclass:
659
Endless conveyor:
This subclass is indented under subclass 658. Subject matter
having a boundless transport means for the material.
Subclass:
660
Endless conveyor having material gripper:
This subclass is indented under subclass 659. Subject matter
including a boundless conveyor with means to grasp the
material.
Subclass:
661
Endless conveyor having material hanger:
This subclass is indented under subclass 659. Subject matter
having a means to suspend the material connected to the
boundless transport means.
Subclass:
662
Plural opposed cooperating endless conveyors:
This subclass is indented under subclass 659. Subject matter
wherein two boundless conveyors have coacting faces between
which the material is moved.
Subclass:
663
Endless conveyor contacts solid perforated guide:
This subclass is indented under subclass 659. Subject matter
wherein the face of a boundless conveyor moves across a rigid
apertured plate so the material is moved between the guide
and conveyor.
Subclass:
664
Movable treated material holder:
This subclass is indented under subclass 618. Subject matter
including holding means for the sheet, web, or strand that
are mounted for motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
184 for rotary carriers or racks, and 192+, for shelf- or
tray-type dryer not restricted to sheets, webs, or strands.
subclasses 658+ for endless conveyors or movable grippers.
SEE OR SEARCH CLASS:
26, Textiles: Cloth Finishing, subclass 81, 92, or 106, and
see the reference to this class (34) in the definition of
subclass 646.
69, Leather Manufactures, subclass 19 for boards on which
hides, skins, or leather is "put out" for drying.
Subclass:
665
Rotary holder:
This subclass is indented under subclass 664. Subject matter
wherein the material holder is mounted to revolve.
Subclass:
666
Car dryer:
This subclass is indented under subclass 201. Apparatus
wherein the enclosure is adapted for drying an automobile.
Subclass:
667
Debris guard:
This subclass is indented under subclass 523. Apparatus
having a means to shield against waste entering the treating
chamber.
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