|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

|  | F01 - F04 |
Subsection index
MACHINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F04C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F04B
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
ENGINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F03C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F03C
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
PUMPS |
positive displacement |
rotary or oscillating piston | F04C
reciprocating piston or other | F04B
non-positive displacement | F04D

LIGHTING; HEATING

|  | F26 |
DRYING

|  | F26B |
DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (drying devices for combines Fulltext... Hierarchy... Expanded...A01D 41/133; racks for drying fruit or vegetables Fulltext... Hierarchy... Expanded...A01F 25/12; drying foodstuffs Fulltext... Hierarchy... Expanded...A23; drying hair Fulltext... Hierarchy... Expanded...A45D 20/00; body-drying implements Fulltext... Hierarchy... Expanded...A47K 10/00; drying household articles Fulltext... Hierarchy... Expanded...A47L; drying gases or vapours Fulltext... Hierarchy... Expanded...B01D; chemical or physical processes for dewatering or like separating liquids from solids Fulltext... Hierarchy... Expanded...B01D 43/00; centrifugal apparatus Fulltext... Hierarchy... Expanded...B04; drying ceramics Fulltext... Hierarchy... Expanded...C04B 33/30; drying yarns or fabrics in association with some other form of treatment Fulltext... Hierarchy... Expanded...D06C; drying frames for laundry without heating or positive air circulation, domestic laundry-or spin-driers, wringing or hot pressing laundry Fulltext... Hierarchy... Expanded...D06F; furnaces, kilns, ovens Fulltext... Hierarchy... Expanded...F27)

|  | F26B |
Note(s) Processes using enzymes or micro-organisms in order to: liberate, separate or purify a pre-existing compound or composition, or to treat textiles or clean solid surfaces of materials are further classified in subclass Fulltext... Hierarchy... Expanded...C12S. [5]

|  | F26B |
Subclass index
PROCESSES FOR DRYING |
Preliminary treatment | 1/00
Processes: with heat; without heat; by combination of both types | 3/00; 5/00; 7/00
MACHINES OR APPARATUS FOR DRYING |
With articles to be dried at rest or locally agitated, domestic airing | 9/00
With non-progressive movement | 11/00
With progressive movement: for fabrics or yarns; for articles and compact batches; for material not in compact batches | 13/00; 15/00; 17/00
Other kinds | 19/00
Combinations using at least two of the above kinds | 20/00
ARRANGEMENTS OR DETAILS OF GENERAL APPLICATIONS |
Arrangements for air or gas for drying; heating | 21/00; 23/00
Other details | 25/00

|  | F26B 1/00 - F26B 7/00 |
Processes for drying

P:70 |  | F26B 1/00 |
Preliminary treatment of solid materials or objects to facilitate drying

P:90 |  | F26B 3/00 |
Drying solid materials or objects by processes involving the application of heat (in specific machines or apparatus Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F26B 9/00-F26B 19/00)

|  | F26B 3/02 |
· | by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air

|  | F26B 3/04 |
· · | the gas or vapour circulating over, or surrounding, the materials or objects to be dried (Fulltext... Hierarchy... Expanded...F26B 3/14 takes precedence)

|  | F26B 3/06 |
· · | the gas or vapour flowing through the materials or objects to be dried (Fulltext... Hierarchy... Expanded...F26B 3/14 takes precedence)

|  | F26B 3/08 |
· · · | so as to loosen them, e.g. to form a fluidised bed

|  | F26B 3/084 |
· · · · | with heat exchange taking place in the fluidised bed [5]

|  | F26B 3/088 |
· · · · | using inert thermally-stabilised particles [5]

|  | F26B 3/092 |
· · · · | agitating the fluidised bed, e.g. by vibrating or pulsating [5]

|  | F26B 3/097 |
· · · · | using a magnetic field to stabilise the fluidised bed [5]

|  | F26B 3/10 |
· · | the gas or vapour carrying the materials or objects to be dried with it

|  | F26B 3/12 |
· · · | in the form of a spray

|  | F26B 3/14 |
· · | the materials or objects to be dried being moved by gravity

|  | F26B 3/16 |
· · · | in a counter-flow of the gas or vapour

|  | F26B 3/18 |
· | by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact

|  | F26B 3/20 |
· · | the heat source being a heated surface (Fulltext... Hierarchy... Expanded...F26B 3/22 takes precedence)

|  | F26B 3/22 |
· · | the heat source and the materials or objects to be dried being in relative motion, e.g. of vibration

|  | F26B 3/24 |
· · · | the movement being rotation

|  | F26B 3/26 |
· · · | the movement being performed by gravity

|  | F26B 3/28 |
· | by radiation, e.g. from the sun

|  | F26B 3/30 |
· · | from infra-red-emitting elements

|  | F26B 3/32 |
· | by development of heat within the materials or objects to be dried

|  | F26B 3/34 |
· · | by using electrical effects

|  | F26B 3/347 |
· · · | Electromagnetic heating, e.g. induction heating or heating using microwave energy [4]

|  | F26B 3/353 |
· · · | Resistance heating [4]

|  | F26B 3/36 |
· · | by using mechanical effects, e.g. by friction (by using ultrasonic vibration Fulltext... Hierarchy... Expanded...F26B 5/02)

P:100 |  | F26B 5/00 |
Drying solid materials or objects by processes not involving the application of heat (separating liquids from solids by straining Fulltext... Hierarchy... Expanded...B01D; replacing liquids in wet solids by other liquids, e.g. water by spirit, Fulltext... Hierarchy... Expanded...B01D 12/00; drying by electrophoresis Fulltext... Hierarchy... Expanded...B01J)

|  | F26B 5/02 |
· | by using ultrasonic vibrations

|  | F26B 5/04 |
· | by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum

|  | F26B 5/06 |
· · | the process involving freezing

|  | F26B 5/08 |
· | by centrifugal treatment

|  | F26B 5/10 |
· · | the process involving freezing

|  | F26B 5/12 |
· | by suction

|  | F26B 5/14 |
· | by applying pressure, e.g. wringing; by brushing; by wiping

|  | F26B 5/16 |
· | by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials

P:80 |  | F26B 7/00 |
Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups Fulltext... Hierarchy... Expanded...F26B 3/00 or Fulltext... Hierarchy... Expanded...F26B 5/00

|  | F26B 9/00 - F26B 20/00 |
Machines or apparatus for drying

P:50 |  | F26B 9/00 |
Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards

|  | F26B 9/02 |
· | in buildings (special types of buildings Fulltext... Hierarchy... Expanded...E04H)

|  | F26B 9/04 |
· | in presses or clamping devices

|  | F26B 9/06 |
· | in stationary drums or chambers

|  | F26B 9/08 |
· · | including agitating devices

|  | F26B 9/10 |
· | in the open air; in pans or tables in rooms; Drying stacks of loose material

P:40 |  | F26B 11/00 |
Machines or apparatus for drying solid materials or objects with movement which is non-progressive

|  | F26B 11/02 |
· | in moving drums or other mainly-closed receptacles (Fulltext... Hierarchy... Expanded...F26B 11/18 takes precedence)

|  | F26B 11/04 |
· · | rotating about a horizontal or slightly-inclined axis

|  | F26B 11/06 |
· · · | with stirring devices which are held stationary

|  | F26B 11/08 |
· · | rotating about a vertical or steeply-inclined axis

|  | F26B 11/10 |
· · · | with stirring devices which are held stationary

|  | F26B 11/12 |
· | in stationary drums or other mainly-closed receptacles with moving stirring devices (Fulltext... Hierarchy... Expanded...F26B 11/22 takes precedence)

|  | F26B 11/14 |
· · | the stirring device moving in a horizontal or slightly-inclined plane

|  | F26B 11/16 |
· · | the stirring device moving in a vertical or steeply-inclined plane

|  | F26B 11/18 |
· | on or in moving dishes, trays, pans, or other mainly-open receptacles

|  | F26B 11/20 |
· · | with stirring devices which are held stationary

|  | F26B 11/22 |
· | on or in stationary dishes, trays, pans, or other mainly-open receptacles, with moving stirring devices

P:10 |  | F26B 13/00 |
Machines or apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement

|  | F26B 13/02 |
· | with movement in a straight line

|  | F26B 13/04 |
· · | using rollers

|  | F26B 13/06 |
· | with movement in a sinuous or zig-zag path

|  | F26B 13/08 |
· · | using rollers

|  | F26B 13/10 |
· | Arrangements for feeding, heating, or supporting materials; Regulating movement, tension, or position of materials (heating processes Fulltext... Hierarchy... Expanded...F26B 3/00)

|  | F26B 13/12 |
· · | Regulating movement, tension, or position of material

|  | F26B 13/14 |
· · | Rollers (sorbent surfaces Fulltext... Hierarchy... Expanded...F26B 13/26)

|  | F26B 13/16 |
· · · | perforated (Fulltext... Hierarchy... Expanded...F26B 13/18 takes precedence; for applying suction Fulltext... Hierarchy... Expanded...F26B 13/30)

|  | F26B 13/18 |
· · · | heated; cooled

|  | F26B 13/20 |
· · | Supporting materials by fluid jets, e.g. air

|  | F26B 13/22 |
· · | Arrangements of gas flames

|  | F26B 13/24 |
· | Arrangements of devices using drying processes not involving heating (such processes per se Fulltext... Hierarchy... Expanded...F26B 5/00)

|  | F26B 13/26 |
· · | using sorbent surfaces, e.g. bands or coverings on rollers

|  | F26B 13/28 |
· · | for applying pressure; for brushing; for wiping

|  | F26B 13/30 |
· · | for applying suction, e.g. through perforated rollers

P:30 |  | F26B 15/00 |
Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form (Fulltext... Hierarchy... Expanded...F26B 13/00, Fulltext... Hierarchy... Expanded...F26B 17/00 take precedence; conveyers in general Fulltext... Hierarchy... Expanded...B65G)

|  | F26B 15/02 |
· | with movement in the whole or part of a circle

|  | F26B 15/04 |
· · | in a horizontal plane

|  | F26B 15/06 |
· · · | involving several planes, one above the other

|  | F26B 15/08 |
· · | in a vertical plane

|  | F26B 15/10 |
· | with movement in a path composed of one or more straight lines, e.g. compound

|  | F26B 15/12 |
· · | the lines being all horizontal or slightly inclined

|  | F26B 15/14 |
· · · | the objects or batches of materials being carried by trays or racks

|  | F26B 15/16 |
· · · | the objects or batches of materials being carried by wheeled trucks

|  | F26B 15/18 |
· · · | the objects or batches of materials being carried by endless belts

|  | F26B 15/20 |
· · | the lines being all vertical or steeply inclined

|  | F26B 15/22 |
· · · | the objects or batches of materials being carried by endless belts

|  | F26B 15/24 |
· · · · | in a zig-zag path

|  | F26B 15/26 |
· | with movement in a helical path

P:20 |  | F26B 17/00 |
Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement (Fulltext... Hierarchy... Expanded...F26B 13/00 takes precedence)

|  | F26B 17/02 |
· | with movement performed by belts carrying the materials; with movement performed by belts propelling the materials over stationary surfaces

|  | F26B 17/04 |
· · | the belts being all horizontal or slightly inclined (Fulltext... Hierarchy... Expanded...F26B 17/08 takes precedence)

|  | F26B 17/06 |
· · | the belts being all vertical or steeply inclined (Fulltext... Hierarchy... Expanded...F26B 17/08 takes precedence)

|  | F26B 17/08 |
· · | the belts being arranged in a sinuous or zig-zag path

|  | F26B 17/10 |
· | with movement performed by fluid currents, e.g. issuing from a nozzle (Fulltext... Hierarchy... Expanded...F26B 3/08 takes precedence) [5]

|  | F26B 17/12 |
· | with movement performed solely by gravity

|  | F26B 17/14 |
· · | the materials moving through a counter-current of gas

|  | F26B 17/16 |
· · | the materials passing down a heated surface

|  | F26B 17/18 |
· | with movement performed by rotating helical blades or other rotary conveyers moving materials in stationary chambers

|  | F26B 17/20 |
· · | the axis of rotation being horizontal or slightly inclined

|  | F26B 17/22 |
· · | the axis of rotation being vertical or steeply inclined

|  | F26B 17/24 |
· | with movement performed by shooting or throwing the materials

|  | F26B 17/26 |
· | with movement performed by reciprocating or oscillating conveyers propelling materials over stationary surfaces; with movement performed by reciprocating or oscillating shelves, sieves, or trays

|  | F26B 17/28 |
· | with movement performed by rollers or discs with material passing over or between them, e.g. suction drum, sieve

|  | F26B 17/30 |
· | with movement performed by rotary or oscillating containers; with movement performed by rotary floors

|  | F26B 17/32 |
· · | the movement being in a horizontal or slightly-inclined plane

|  | F26B 17/34 |
· · | the movement being in a vertical or steeply-inclined plane

P:60 |  | F26B 19/00 |
Machines or apparatus for drying solid materials or objects not covered by groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F26B 9/00-F26B 17/00

P:0 |  | F26B 20/00 |
Combinations of machines or apparatus covered by two or more of groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F26B 9/00-F26B 19/00

|  | F26B 21/00 - F26B 25/00 |
Details of general application

P:110 |  | F26B 21/00 |
Arrangements for supplying or controlling air or gases for drying solid materials or objects (air-conditioning or ventilation in general Fulltext... Hierarchy... Expanded...F24F)

|  | F26B 21/02 |
· | Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure (Fulltext... Hierarchy... Expanded...F26B 21/14 takes precedence)

|  | F26B 21/04 |
· · | partly outside the drying enclosure

|  | F26B 21/06 |
· | Controlling, e.g. regulating, parameters of gas supply (Fulltext... Hierarchy... Expanded...F26B 21/14 takes precedence)

|  | F26B 21/08 |
· · | Humidity

|  | F26B 21/10 |
· · | Temperature; Pressure

|  | F26B 21/12 |
· · | Velocity of flow; Quantity of flow

|  | F26B 21/14 |
· | using gases or vapours other than air or steam

P:120 |  | F26B 23/00 |
Heating arrangements (using heated air or gases Fulltext... Hierarchy... Expanded...F26B 21/00)

|  | F26B 23/02 |
· | using combustion heating (Fulltext... Hierarchy... Expanded...F26B 23/10 takes precedence)

|  | F26B 23/04 |
· | using electric heating (Fulltext... Hierarchy... Expanded...F26B 23/10 takes precedence)

|  | F26B 23/06 |
· · | resistance heating

|  | F26B 23/08 |
· · | inductive heating; capacitative heating; microwave heating

|  | F26B 23/10 |
· | using tubes or passages containing heated fluids

P:130 |  | F26B 25/00 |
Details of general application not covered by group Fulltext... Hierarchy... Expanded...F26B 21/00 or Fulltext... Hierarchy... Expanded...F26B 23/00 (loading, conveying, or unloading in general Fulltext... Hierarchy... Expanded...B65G)

|  | F26B 25/02 |
· | Applications of driving mechanisms, not covered by another subclass

|  | F26B 25/04 |
· | Agitating, stirring, or scraping devices

|  | F26B 25/06 |
· | Chambers, containers, or receptacles

|  | F26B 25/08 |
· · | Parts thereof

|  | F26B 25/10 |
· · · | Floors, roofs, or bottoms; False bottoms

|  | F26B 25/12 |
· · · | Walls or sides; Doors

|  | F26B 25/14 |
· · | Chambers, containers, receptacles of simple construction

|  | F26B 25/16 |
· · · | mainly closed, e.g. drum

|  | F26B 25/18 |
· · · | mainly open, e.g. dish, tray, pan

|  | F26B 25/20 |
· | Rollers (Fulltext... Hierarchy... Expanded...F26B 25/06 takes precedence)

|  | F26B 25/22 |
· | Controlling the drying process in dependence on liquid content of solid materials or objects