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 fluidF01C
liquid onlyF04C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF04B
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
ENGINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF03C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF03C
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
PUMPS
positive displacement
rotary or oscillating pistonF04C
reciprocating piston or otherF04B
non-positive displacementF04D
  
LIGHTING; HEATING
 F25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
 F25B
REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS (heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K 5/00; pumps, compressors F04; use of heat pumps for domestic or space-heating or for domestic hot-water supply F24D; air-conditioning, air-humidification F24F; fluid heaters using heat pumps F24H)
 F25B

Note(s)

Attention is drawn to Note (2) following the title of subclass F24F.   [5]

 F25B
Subclass index
MODE OF OPERATION
Compression type
characterised by the cycle 1/00, 13/00
characterised by the arrangement
self-contained rotary; with several evaporation circuits; with several condenser circuits; with cascade operation 3/00; 5/00; 6/00; 7/00
characterised by the refrigerant 9/00
using turbines 11/00
Sorption type 15/00, 17/00
Other types having a single mode of operation, using: evaporation without recovery; electric or magnetic effects; other effect 19/00; 21/00; 23/00
Combinations: of above modes of operation; of heating and refrigerating 25/00; 29/00
Heat pumps 30/00
Using special energy source 27/00
DETAILS, ARRANGEMENTS, OR COMPONENTS
Components: boilers, analysers, rectifiers; boiler-absorbers; absorbers, adsorbers; evaporators, condensers; subcoolers, desuper- heaters, superheaters 33/00; 35/00; 37/00; 39/00; 40/00
Arrangements
compressor arrangement; fluid circulation; separating or purifying gases 31/00; 41/00; 43/00
for charging or discharging refrigerant; for combating corrosion or deposits 45/00; 47/00
Mounting of control and safety devices 49/00
 F25C
PRODUCTION, WORKING, STORING, OR DISTRIBUTION OF ICE (frozen sweets, including ice-cream, their production A23G 9/00; concentrating solutions by removing frozen solvents B01D 9/04; purification of water by freezing C02F 1/22; refrigeration machines, plants, or systems F25B; solidification of gases or gaseous mixtures F25J; freeze-drying F26B)  [2]
 F25C

Note(s)

In this subclass, the following term is used with the meaning indicated:

  • "ice" means any frozen liquid and also covers frozen semiliquids or pasty substances.  [2]

 F25D
REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS (refrigerated showcases A47F 3/04; thermally-insulated vessels for domestic use A47J 41/00; refrigerated vehicles, see the appropriate subclasses of classes B60-B64; containers with thermal insulation in general B65D 81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K 5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants, or systems F25B; cooling of instruments or comparable apparatus without refrigeration G12B; cooling of engines or pumps, see the relevant classes)
 F25D

Note(s)

  1. In this subclass, the following term is used with the meaning indicated:
    • "device" means an enclosed space to be cooled; such devices being associated either with refrigerating machinery, e.g. in a refrigerator, or with other cold sources, e.g. in an ice-box.
  2. Attention is drawn to Note (2) following the title of subclass F24F.  [5]
 F25D
Subclass index
DEVICES NOT ASSOCIATED WITH REFRIGERATING MACHINERY
Using cold air or water; other cold materials or bodies 1/00; 3/00
Using endothermic chemical reactions, or evaporation without recovery 5/00, 7/00
Other devices, combinations 9/00
DEVICES ASSOCIATED WITH REFRIGERATING MACHINERY: SELF-CONTAINED MOVABLE; STATIONARY; OTHER 11/00; 13/00; 15/00, 16/00
STRUCTURAL PARTS OR ARRANGEMENTS, OF GENERAL APPLICATION: GENERAL; DEFROSTING; HANDLING OF ARTICLES TO BE COOLED 23/00; 21/00; 25/00
CIRCULATING COOLING FLUID OR GAS; LIGHTING 17/00; 27/00
ARRANGEMENT OR MOUNTING: OF REFRIGERATION UNITS; OF CONTROL OR SAFETY DEVICES 19/00; 29/00
OTHER APPARATUS 31/00
 F25J
LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT (cryogenic pumps F04B 37/08; gas storage vessels, gas-holders F17; filling vessels with, or discharging from vessels, compressed, liquefied, or solidified gases F17C; refrigeration machines, plants, or systems F25B)