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

LIGHTING AND HEATING

|  | F25 |
REFRIGERATION OR COOLING; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES

|  | F25B |
REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS, e.g. HEAT PUMP SYSTEMS (pumps, compressors Fulltext... Hierarchy... Expanded...F04; use of heat pumps for domestic heating Fulltext... Hierarchy... Expanded...F24D; use of refrigeration in air-conditioning Fulltext... Hierarchy... Expanded...F24F)

|  | F25C |
PRODUCTION, WORKING, STORING, OR DISTRIBUTION OF ICE (frozen sweets, including ice-cream, their production Fulltext... Hierarchy... Expanded...A23G 9/00; concentrating solutions by removing frozen solvents Fulltext... Hierarchy... Expanded...B01D 9/04; purification of water by freezing Fulltext... Hierarchy... Expanded...C02F 1/22; refrigeration machines, plants, or systems Fulltext... Hierarchy... Expanded...F25B; solidification of gases or gaseous mixtures Fulltext... Hierarchy... Expanded...F25J; freeze-drying Fulltext... Hierarchy... Expanded...F26B) [2]

|  | F25C |
Note(s) In this sub-class, the term "ice" means any frozen liquid and is to be understood as also covering frozen semiliquids or pasty substances [2]

|  | F25D |
REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUB-CLASS (refrigerated show cases Fulltext... Hierarchy... Expanded...A47F 3/04; refrigerated vehicles, see the appropriate sub-classes of classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B60-B64; thermally-insulated vessels for domestic use Fulltext... Hierarchy... Expanded...B65D; thermally-insulated vessels for liquefied or solidified gases Fulltext... Hierarchy... Expanded...F17C; air-conditioning, ventilation Fulltext... Hierarchy... Expanded...F24F; refrigeration machines, plants, or systems Fulltext... Hierarchy... Expanded...F25B; cooling of instruments and comparable apparatus without refrigeration Fulltext... Hierarchy... Expanded...G12B; cooling of engines or pumps, see the relevant classes)

|  | F25D |
Note(s) In this sub-class, the term "device" refers to an enclosed space to be cooled, such devices being associated either with refrigerating machinery, e.g. as in a refrigerator, or with other cold sources, e.g. as in an ice-box.

|  | F25J |
LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT (cryogenic pumps Fulltext... Hierarchy... Expanded...F04B 37/08; gas storage vessels, gas-holders Fulltext... Hierarchy... Expanded...F17; filling vessels with, or discharging from vessels, compressed, liquefied, or solidified gases Fulltext... Hierarchy... Expanded...F17C; refrigeration machines, plants, or systems Fulltext... Hierarchy... Expanded...F25B)