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DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (racks for drying fruit and vegetables A01F 25/12; drying foodstuffs A23; drying hair A45D 20/00; body-drying implements A47K 10/00; drying household articles A47L, [N: e.g. drying footwear A47L 23/20;] drying gases and vapours B01D; chemical and physical processes for dewatering or like separating liquids from solids B01D 43/00; centrifugal apparatus B04; drying ceramics C04B 33/30; drying yarns and fabrics in association with some other form of treatment D06C; drying frames for laundry without heating or positive air circulation, domestic and like spin-dryers, wringing and hot pressing laundry D06F; furnaces, kilns, ovens F27; [N: treatment including a drying step of semiconductor substrates, e.g. wafers, H01L21/00S2D4 ])
Definition statement
This subclass/group covers:

Processes and specific machines and arrangements for drying objects, solid materials or fluent materials containing solids by removing water or other liquids therefrom.

Relationship between large subject matter areas
Processing, e.g. drying of harvested produce
Dairy products
Food and foodstuffs; their treatment, e.g. drying
Drying household articles
Drying gases and vapours
Physical Processes and their relevant apparatus
Centrifuges
Preparation or pre-treatment, e.g. drying, of plastics to be shaped
Presses in general
Cement Making
Drying of peat
Fuels, e.g. solid fuels not otherwise provided for
Drying yarns or fabrics in association with some other form of treatment
Drying textile articles
Production of cellulose, e.g. pulp
Impregnating or coating of paper
Regulating or controlling combustion
Feeding fuel to combustion apparatus
Drying, conditioning of air in general
Heat cycles, refrigeration
Furnaces, kilns, ovens in general
Details of furnaces, kilns and ovens in general
Cables, conductors and insulators
Capacitors
Feeding waste products to combustion apparatus
References relevant to classification in this subclass
This subclass/group does not cover:
Drying gases and vapours
Evaporating of liquids
Treatment including a drying step of semiconductor substrates, e.g. wafers
Informative references
Attention is drawn to the following places, which may be of interest for search:
Apparatus for preserving meat, fish, eggs, fruit, vegetables by drying
A23B/[CpcRefSymbol=03]
Apparatus for preserving meat, fish, eggs, fruit, vegetables by freeze drying
A23B/[CpcRefSymbol=037]
Preservation of foodstuff by drying
Machines for drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
Drying of shoes during manufacture
Drying and activating adhesives in the process of glueing shoe parts
Drying Hair
Drying razor blades
Drying footwear
Body Drying Implements
Physical or chemical process or apparatus in general for separating liquids from solids
Drying of gases, i.e. removing vapour, e.g. water vapour
Treating solid materials in general with rotating drums
Drying grain before milling
Pre- or after-treatment, e.g. drying or curing, of surfaces to which liquids, e.g. coatings or paints, are applied
Auxiliary treatment of plastic granules, i.e. after making them
Drying plastic pellets, e.g. before the extruder
Apparatus for making layered products for laminating, e.g. by curing or drying
Drying vehicle bodies, e.g. cars, after washing
Drying of matches
C01F1/06
Drying of sludge
Drying clay wares
Drying or dewatering of peat
Drying apparatus for fuels
Torrefying apparatus for fuels
Heating solid fuel briquettes of mineral origin
Solid biofuels
Drying leather or hides as part of the manufacturing process
Drying of retted fibres
Forcing gases through textile materials
Removing liquids from textile materials in association with previous liquid treatment
Supporting means for linen or garments to be dried
Domestic laundry dryer, e.g. tumbler
De-watering of pulp
Machines for preparing, e.g. heating and drying, of paving materials for roads
Apparatus for drying pavement
Drying of constructions, e.g. buildings, and keeping them dry
Preparation of solid fuel prior to combustion, e.g. drying
Equipment for the use of solar heat
Drying of photographic film in processing apparatus
G03D15/12
Drying step in manufacturing of electric cables
Drying step in manufacturing of electric insulators
Drying, filling, purifying of, e.g. oil cooled, transformers
Drying of, e.g. oil cooled, transformers
Drying step in manufacturing capacitors
Drying of waste products by heat prior to combustion
Dewatering of waste products by mechanical means prior to combustion
Drying of solid fuel prior combustion
Production of biofuels through pyrolysis
Production of biofuels through torrefaction
Special rules of classification within this subclass

Documents dealing with drying specific solid materials or objects belonging to other subclasses are classified in F26B only, if the disclosed drying process or machine is of general interest, i.e. not limited to the specific solid material or object.

Preliminary treatment of solid materials or objects to facilitate drying[N: e.g. mixing or backmixing the materials to be dried with predominantly dry solids (F26B 5/005 takes precedence)]
Definition statement
This subclass/group covers:

Preliminary treatment, i.e. not the actual drying treatment, of solid materials or objects.

References relevant to classification in this group
This subclass/group does not cover:
Applying a combustible liquid, which is burnt off later, onto the solid materials or objects
Dipping the solid materials or objects into, or mixing with, chemical liquids for subsequent drying
Informative references
Attention is drawn to the following places, which may be of interest for search:
Replacing liquid in wet solids by other liquid
Drying solid materials or objects by processes involving the application of heat (in specific machines or apparatus F26B 9/00 to F26B 19/00 )
Definition statement
This subclass/group covers:

Drying solid materials or objects by processes applying heat as primary drying principle.

References relevant to classification in this group
This subclass/group does not cover:
Processes involving direct heating, e.g. radiation, or indirect heating, e.g. convection, of the drying good merely as a measure to compensate cooling effects through evaporation, e.g. in a vacuum dryer
Heat generated by friction through ultrasonic vibrations
Condensing vapour other than steam onto the surface of the materials or objects to be dried
Informative references
Attention is drawn to the following places, which may be of interest for search:
Preserving food in general by spray drying
Spray drying liquids
Spray drying liquid solutions to obtain solids
Fluidised bed technique in general
UV-curing of paint
Equipment for the use of solar heat
Magnetrons for drying
Special rules of classification within this group

Specific machines or apparatus (F26B 9/00 to F26B 19/00) being inherent to the process take precedence.

Therefore, inventions are additionally classified in F26B 3/00 only, if the invention information lies within the process as such.

In any case, inventions are classified in F26B 3/00, if adequate entries, i.e. classes, for machines or apparatuses do not exist.

so as to loosen them, e.g. to form a fluidised bed [N: ("fluidised-bed" technique in general B01J 8/24; centrifugal fluidised beds F26B 7/007 )]
References relevant to classification in this group
This subclass/group does not cover:
Centrifugal fluidised beds
Informative references
Attention is drawn to the following places, which may be of interest for search:
Fluidised bed technique in general
in the form of a spray, [N: i.e. sprayed or dispersed emulsions or suspensions (spray drying of solutions B01D 1/18 )]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Preserving food in general by spray drying
Spray drying liquids
Spray drying liquids or solutions to obtain solids
Freeze drying involving spraying
by radiation, e.g. from the sun
Informative references
Attention is drawn to the following places, which may be of interest for search:
UV-curing of paint
Equipment for the use of solar heat
Heated fluid, other than combustion gases, in tubes or passages acting as radiative element
Electromagnetic heating, e.g. induction heating or heating using microwave energy
Informative references
Attention is drawn to the following places, which may be of interest for search:
Magnetrons for drying
Drying solid materials or objects by processes not involving the application of heat (separating liquids from solids by straining B01D; replacing liquids in wet solids by other liquids, e.g. water by spirit, B01D 12/00 ; drying by electrophoresis B01J)
Definition statement
This subclass/group covers:

Drying solid materials or objects by processes applying a primary drying principle not involving heat.

Direct heating, e.g. radiation, or indirect heating, e.g. convection, of the drying good as measure to compensate cooling effects through evaporation are not considered to be a primary drying principle.

Relationship between large subject matter areas

Separating a liquid product from solids by straining: B01D

Drying by electrophoresis: B01J

Centrifuges in general; details of construction:B04B

Informative references
Attention is drawn to the following places, which may be of interest for search:
Apparatus for preserving meat, fish, eggs, fruit, vegetables by freeze drying
A23B/[CpcRefSymbol=037]
Preserving food in general by freeze drying
Domestic salad spin dryer
Replacing liquid in wet solids by other liquid
Physical or chemical process or apparatus for separating liquids from solids, in general
Centrifuges, details of construction
Metal rolling; removing liquids
Presses for squeezing out liquids
Cleaning, e.g. drying paint applying hand tools
Drying of peat using presses, rolls or centrifuges
Wringing machines for textile articles with two or more cooperating rollers
Apparatus of the press type for expelling water from textile articles
Domestic spin dryers for textile articles
Wet end, e.g. filter belt type, of machines for making a continuous web of paper
Drying of constructions or buildings using electricity, e.g. electro-osmosis
Dewatering of waste products by mechanical means prior to combustion
[N: by dipping them into or mixing them with a chemical liquid, e.g. organic; chemical, e.g. organic, dewatering aids (F26B 3/005 takes precedence; using chemical vapours or gases F26B 21/14 )]
Definition statement
This subclass/group covers:

by dipping them into or mixing them with a chemical liquid, e.g. organic; chemical, e.g. organic, dewatering aids

References relevant to classification in this group
This subclass/group does not cover:
Applying a combustible liquid onto the material, the liquid being burnt off subsequently
Condensing vapour other than steam onto the surface of the material to be dried
Informative references
Attention is drawn to the following places, which may be of interest for search:
Replacing liquid in wet solids by other liquid
the process involving freezing
Informative references
Attention is drawn to the following places, which may be of interest for search:
Apparatus for preserving meat, fish, eggs, fruit, vegetables by freeze drying
A23B/[CpcRefSymbol=037]
Preserving food in general by freeze drying
by centrifugal treatment
Informative references
Attention is drawn to the following places, which may be of interest for search:
Domestic salad spin dryer
Centrifuges
Cleaning, e.g. drying paint applying hand tools
Drying of peat using centrifuges
Domestic spin dryers for textile articles
by suction
References relevant to classification in this group
This subclass/group does not cover:
Machines for drying material of long length with progressive movement by applying suction
Informative references
Attention is drawn to the following places, which may be of interest for search:
Metal rolling; removing liquids
Wet end, e.g. filter belt type, of machines for making a continuous web of paper
by applying pressure, e.g. wringing; by brushing; by wiping
References relevant to classification in this group
This subclass/group does not cover:
Machines for drying material of long length with progressive movement by applying pressure, brushing or wiping
Informative references
Attention is drawn to the following places, which may be of interest for search:
Metal rolling; removing liquids
Presses for squeezing out liquids
Drying of peat using presses or rolls
Wringing machines for textile articles with two or more cooperating rollers
Apparatus of the press type for expelling water from textile articles
Wet end, e.g. filter belt type, of machines for making a continuous web of paper
by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
References relevant to classification in this group
This subclass/group does not cover:
Machines for drying material of long length with progressive movement by employing sorbent surfaces
Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B 3/00 and F26B 5/00 [N: (F26B 1/005, F26B 5/04, F26B 23/026 take precedence)]
Definition statement
This subclass/group covers:

Drying solid materials or objects by processes using a synergy creating combination, opposed to a simple agglomeration, of a heat applying "hot" process and a "cold" process.

Special rules of classification within this group

Documents classified in the combination group F26B 7/00 are also to be classified in the relevant "hot" group F26B 3/00, F26B 9/00 to F26B 19/00 respectively, and the relevant "cold" group F26B 5/00.

Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards [N: (domestic laundry drying cabinets or chambers having heating or ventilating means D06F 58/10 )]
Definition statement
This subclass/group covers:

Machines or apparatus for drying "large" objects at rest.

Machines or apparatus for drying solid materials or "small" objects, e.g. bulk materials at rest or with local agitation, e.g. fixed or moving "small" stirrer in a "large" silo.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Ventilating means for stacks of agricultural products
Machines for drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
Drying Hair
Drying razor blades
Body Drying Implements
Large containers having means for heating, cooling, aerating or other conditioning of contents
Supporting means for linen or garments to be dried
Domestic laundry drying cabinets
Drying or keeping dry of constructions, e.g. buildings
[N:Small self-contained devices, e.g. portable]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Drying razor blades
[N:Removable covering devices, e.g. pliable or flexible ]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Roofs of drying chambers
in the open air; in pans or tables in rooms; Drying stacks of loose material [N: on floors which may be covered, e.g. by a roof (ventilating means of stacks for agricultural produce A01F 25/08 )]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Ventilating means for stacks of agricultural products
Machines or apparatus for drying solid materials or objects with movement which is non-progressive
Definition statement
This subclass/group covers:

Machines or apparatus for drying solid materials or objects with primarily non-progressive, i.e. stirring, movement.

The movement of solid materials in e.g. horizontal rotating drums such as kilns is considered not primarily progressive even though opposed inlets and outlets are typically present.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Treating in general with rotating drums
Machines for preparing, e.g. heating and drying, of paving materials for roads
in moving drums or other mainly-closed receptacles (F26B 11/18 takes precedence)
Informative references
Attention is drawn to the following places, which may be of interest for search:
Treating in general with rotating drums
Machines for preparing, e.g. heating and drying, of paving materials for roads
[N: Arrangements of drives, bearings, supports]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Driving arrangements specific to drying machines in general
[N:Arrangements for gas-sealing the drum]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Seals, locks for drying machines in general
F25B25/00D
[N: Arrangements for charging or discharging the materials to be dried, e.g. discharging by reversing drum rotation, using spiral type inserts]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Charging and discharging of bulk materials to drying machines in general
[N: Arrangements for the supply or exhaust of gaseous drying medium for direct heat transfer, e.g. perforated tubes, annular passages, burner arrangements, dust separation, combined direct and indirect heating]
Definition statement
This subclass/group covers:

Arrangement for the supply or exhaust of gaseous drying medium for direct heat transfer, e.g. perforated tubes, annular passages, burner arrangements, dust separation, combined direct and indirect heat transfer

Informative references
Attention is drawn to the following places, which may be of interest for search:
Arrangements for supplying drying gas in general
rotating about a horizontal or slightly-inclined axis [N: (F26B 11/022, F26B 11/024, F26B 11/026, F26B 11/028 take precedence)]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Machines for preparing, e.g. heating and drying, of paving materials for roads
Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
Definition statement
This subclass/group covers:

Machines and apparatus for drying materials in long length. The materials move progressively through the apparatus either in the form of a coil or uncoiled, e.g. in the form of a web.

References relevant to classification in this group
This subclass/group does not cover:
Drying yarn hanks
Informative references
Attention is drawn to the following places, which may be of interest for search:
Drying fishing lines
Apparatus for making layered products for laminating, e.g. by curing or drying
Treating, e.g. drying, webs after printing
Drying filamentary material, e.g. sheets, webs or cables during package formation
Drying yarns during spinning or twisting
Forcing gases through textile materials
Removing liquids from textile materials in association with previous liquid treatment
Wet end, e.g. filter belt type, of machines for making a continuous web of paper
Dryer sections of machines for making a continuous web of paper
Paper-impregnating material characterized by its constitution
Paper-impregnating material characterized by its function, form or properties
Drying step in manufacturing of cables
Drying step in manufacturing of insulators
[N: Seals, locks, e.g. gas barriers for web drying enclosures]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Seal, looks in drying apparatus in general
Arrangements of devices using drying processes not involving heating (such processes per se F26B 5/00 )
Informative references
Attention is drawn to the following places, which may be of interest for search:
Metal rolling; removing liquids
using sorbent surfaces, e.g. bands or coverings on rollers
Informative references
Attention is drawn to the following places, which may be of interest for search:
Drying process by contact with sorbent bodies
for applying pressure; for brushing; for wiping
Informative references
Attention is drawn to the following places, which may be of interest for search:
Drying process applying pressure, brushing, wiping
Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form (F26B 13/00, F26B 17/00 take precedence; conveyers in general B65G)
Definition statement
This subclass/group covers:

Machines or apparatus for drying objects or object-like batches, e.g. material in a container.

The objects or batches move progressively through the machine or apparatus.

Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement (F26B 13/00 takes precedence; [N: feed or discharge arrangements F26B 25/002 ])
Definition statement
This subclass/group covers:

Machines or apparatus for drying materials in loose form, plastic or fluidized form.

The materials move progressively through the machine or apparatus.

References relevant to classification in this group
This subclass/group does not cover:
Machines with primarily non-progressive movement of materials, e.g. mixing of materials
Fibres forming a material of long length, e.g. yarn, web
Informative references
Attention is drawn to the following places, which may be of interest for search:
Machines for drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
Drying tobacco
Drying grain before milling
Treatment, e.g. drying of wood particles in the production of pressed articles, e.g. boards
Special rules of classification within this group

The movement of materials through rotating drums, e.g. kiln, is considered non-progressive; rotating drums are therefore classified in F26B 11/00

with movement performed by belts carrying the materials; with movement performed by belts [N: or elements attached to endless belts or chains] propelling the materials over stationary surfaces [N: (the movement being in a helical path F26B 15/26; F26B 17/003, F26B 17/263 take precedence)]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Process with stationary surface conducting heat
with movement performed by fluid currents, e.g. issuing from a nozzle, [N: e.g. pneumatic, flash, vortex or entrainment dryers] (F26B 3/08 takes precedence)
Informative references
Attention is drawn to the following places, which may be of interest for search:
Apparatus using free vortex flow for separating in general
[N: pneumatically inducing within the drying enclosure a curved flow path, e.g. circular, spiral, helical; Cyclone or Vortex dryers (swirl or curved flow path induced mechanically, i.e. by rotating element F26B 3/0923 )]
References relevant to classification in this group
This subclass/group does not cover:
Drying processes for loose materials involving a fluidised bed
Informative references
Attention is drawn to the following places, which may be of interest for search:
Apparatus using free vortex flow for separating in general
Jet Mills, e.g. for drying and milling, having a cyclone or vortex type flow pattern
the materials moving through a counter-current of gas
Informative references
Attention is drawn to the following places, which may be of interest for search:
Drying plastic pellets, e.g. before the extruder
with movement performed by shooting or throwing the materials, [N: e.g. after which the materials are subject to impact (F26B 17/108 takes precedence)]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Auxiliary treatment of plastic granules, e.g. after making them
with movement performed by reciprocating or oscillating conveyers propelling materials over stationary surfaces; with movement performed by reciprocating or oscillating shelves, sieves, or trays ([N: F26B 17/006 takes precedence])
Informative references
Attention is drawn to the following places, which may be of interest for search:
Auxiliary treatment of plastic granules, e.g. after making them
Machines or apparatus for drying solid materials or objects not covered by groups F26B 9/00 to F26B 17/00
Definition statement
This subclass/group covers:

Miscellaneous machines and machines of any type for drying solid materials or objects featuring a self contained mobile arrangement, the drying taking place with the mobile machine at rest or with moving machine, e.g. moving along or around the large object to be dried.

Special rules of classification within this group

Combinations of two or more non-mobile machines individually covered by groups F16B 9/00 to F26B 17/00 to be classified in F26B 20/00.

Self contained mobile devices to be classified also in the relevant "stationary" groups F26B 9/00 to F26B 19/00.

[N: Self-contained mobile devices, e.g. for agricultural produce (movable devices with radiation means F26B 3/28; small self-contained devices for drying objects at rest F26B 9/003 )]
References relevant to classification in this group
This subclass/group does not cover:
Small self-contained devices for drying objects at rest
Informative references
Attention is drawn to the following places, which may be of interest for search:
Harvester with Dryer
Large containers having means for heating, cooling, aerating or other conditioning of contents
Drying, or keeping dry, of constructions, e.g. buildings
Apparatus for drying pavement
Movable devices with radiation means
Combinations of machines or apparatus covered by two or more of groups F26B 9/00 to F26B 19/00
Definition statement
This subclass/group covers:

Combinations of machines or apparatus, either creating a synergetic effect or being a simple agglomeration, covered by two or more of groups F26B 9/00 to F26B 19/00.

Arrangements [N: or duct systems, e.g. in combination with pallet boxes,] for supplying and controlling air or gases for drying solid materials or objects ([N: F26B 9/10 takes precedence; systems for vehicle body drying B60S 3/002 ]; air conditioning or ventilation in general F24F)
Definition statement
This subclass/group covers:

Arrangements for supplying drying air or gases or steam to the drying apparatus or directly to (or into) the object or solid materials.

Arrangements for routing and circulating the drying air or gases or steam.

Arrangements for controlling the properties of drying air or gases or steam.

Condensing vapour other than steam onto the surface of the materials or objects to be dried.

References relevant to classification in this group
This subclass/group does not cover:
Machines or apparatus for drying solid materials in the open air or in large rooms featuring drying air supply arrangements
Informative references
Attention is drawn to the following places, which may be of interest for search:
Details, component parts of blowers in general
Valves in general
Processes condensing steam onto the surface of the materials or objects to be dried
[N: Drying-air generating units, e.g. movable, independent of drying enclosure]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Apparatus for drying pavement
Drying of constructions, e.g. buildings
[N: the gas supply or exhaust being effected through hollow spaces or cores in the materials or objects, e.g. tubes, pipes, bottles (F26B 9/003 and F26B 9/103 take precedence)]
References relevant to classification in this group
This subclass/group does not cover:
Small self contained devices
Drying air channels placed in a stack
Informative references
Attention is drawn to the following places, which may be of interest for search:
Drying footwear
[N: the objects being flexible articles, which may be blown up by the drying gas, e.g. tubes, sausage casings (fire hoses A62C 33/02 )]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Drying fire hoses
Providing support for textile articles to be dried, such as garments, gloves or stockings
Humidity
Informative references
Attention is drawn to the following places, which may be of interest for search:
Separation of gases and vapours by absorption in general
Drying gases
[N: by using sorbent or hygroscopic materials, e.g. chemical substances, molecular sieves]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Separation of gases and vapors by adsorption in general
Drying gases by adsorption
[N: by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Solvent recovery by condensation
Solvent recovery by sublimation
Separation of gases and vapours by condensation in general
Drying gases by condensation
Treatment of dryer exhaust gas by e.g. condensation
[N: Condensing the vapour onto the surface of the materials to be dried (using condensing steam F26B 3/00; using chemical liquids F26B 5/005 )]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Processes condensing steam onto the surface of the materials or objects to be dried
Heating arrangements ([N: by radiation, e.g. infra-red, ultra-violet, solar F26B 3/28 and F26B 3/30]; using heated air or gases F26B 21/00 )
Definition statement
This subclass/group covers:

Heating arrangements providing a heat source for drying machines, located outside or within the drying enclosure.Drying air, gas, steam or vapour supply arrangements.

References relevant to classification in this group
This subclass/group does not cover:
Radiation heating the drying good
[N:using waste heat]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Waste heat recuperation with combustion
using combustion heating ([N: F26B 3/305, F26B 13/186, F26B 21/001,] F26B 23/10 take precedence)
References relevant to classification in this group
This subclass/group does not cover:
Heating rollers for drying materials of long length
Drying-air generating units
Combustion for generating IR radiation, either through flame radiation or combustion heated tubes
Informative references
Attention is drawn to the following places, which may be of interest for search:
Regulating or controlling combustion
Arrangements of gas flames for drying materials of long length
Waste combustion control aspects
[N:using solid fuel; burning the dried product]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Using combustion flue gas to predry fuel
Details of general application not covered by group F26B 21/00 or F26B 23/00(loading, conveying, and unloading in general B65G)
Definition statement
This subclass/group covers:

Details of machines or processes other than arrangements of drying air or gas supply or heating arrangements such as:

Cleaning arrangements, e.g. for drying chambers.

Loading, unloading and other handling of objects or materials to be dried or dried.

Treatment of dryer exhaust gases.

Seals, locks and air curtains for drying enclosures.

Alarm, safety and fire protection systems.

Driving mechanisms specific for drying machines.

Agitating, stirring or scraping devices.

Drying chambers and parts thereof.

Rollers, e.g. for conveying specific to drying machines and their requirements.

Controlling the drying process depending on the liquid content of dried material or wet material being charged.

References relevant to classification in this group
This subclass/group does not cover:
Driving mechanisms covered by another subclass, e.g. regarding centrifuges
Driving mechanisms for rotary drums, e.g. kiln
Arrangements for gas sealing drum dryers, e.g. kilns
Loading and unloading materials in rotary drums, e.g. kilns
Seals, locks for web drying enclosures
Rollers and driving mechanisms for rollers for drying material of long length
Treatment of dryer exhaust gas through incineration of volatiles
Loading and unloading of wicket conveyor
Material feeding means for pneumatic, flash or vortex dryers
Safety and fire protection system using inert gases
Informative references
Attention is drawn to the following places, which may be of interest for search:
Large containers having means for heating, cooling, aerating or other conditioning of contents
Loading, conveying and unloading in general
Driving mechanisms in connection with general conveying machines
Mixing or backmixing of wet materials to be charged, thus changing the liquid content
Drying process involving brushing or wiping
Stationary drying chamber with mechanical agitating device
Loading and unloading materials in rotary drums, e.g. kilns
Moving stirring devices in stationary drums
Moving stirring devices in stationary dishes, tray or pans
Arrangements for wiping material of long length, e.g. webs
Scraping device to remove dried material from roller or disc, e.g. doctor blade
[N: for bulk goods (F26B 17/103 takes precedence)]
References relevant to classification in this group
This subclass/group does not cover:
Loading and unloading materials in rotary drums, e.g. kilns
Material feeding means for pneumatic, flash or vortex dryers
Informative references
Attention is drawn to the following places, which may be of interest for search:
Devices for feeding particles into and evacuation of particles out of the reactor
Loading and unloading materials in rotary drums, e.g. kilns
Material feeding means for pneumatic, flash or vortex dryers
[N: Seals, locks, e.g. gas barriers or air curtains, for drying enclosures (F26B 11/024 and F26B 13/005 take precedence)]
References relevant to classification in this group
This subclass/group does not cover:
Arrangements for gas sealing drum dryers, e.g. kilns
Seals, locks for web drying enclosures
Informative references
Attention is drawn to the following places, which may be of interest for search:
Seals in general
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Last Modified: 10/11/2013