|  | 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 41/00; racks for drying fruit or vegetables Fulltext... Hierarchy... Expanded...A01F 25/00; 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 33/00; 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 3/32 |
· | by development of heat within the materials or objects to be dried (by using ultrasonic vibration Fulltext... Hierarchy... Expanded...F26B 5/00)

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

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 9/06 |
· | in stationary drums or chambers

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

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

|  | 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)

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)

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

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

|  | 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)

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

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