|  | 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

|  | F25 |
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES

|  | 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 subclass, the following term is used with the meaning indicated: "ice" means any frozen liquid and also covers frozen semiliquids or pasty substances. [2]

P:10 |  | F25C 1/00 |
Production of ice (Fulltext... Hierarchy... Expanded...F25C 3/00 takes precedence)

|  | F25C 1/02 |
· | Production of natural ice, i.e. without refrigeration

|  | F25C 1/04 |
· | by using stationary moulds

|  | F25C 1/06 |
· · | open or openable at both ends

|  | F25C 1/08 |
· | by immersing freezing chambers or plates into water

|  | F25C 1/10 |
· | by using rotating or otherwise moving moulds (Fulltext... Hierarchy... Expanded...F25C 1/08 takes precedence)

|  | F25C 1/12 |
· | by freezing water on cooled surfaces, e.g. to form slabs

|  | F25C 1/14 |
· · | to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes

|  | F25C 1/16 |
· | by partially evaporating water in a vacuum

|  | F25C 1/18 |
· | of a particular transparency or translucency, e.g. by injecting air

|  | F25C 1/20 |
· · | by agitation

|  | F25C 1/22 |
· | Construction of moulds; Filling devices therefor (metering by volume in general Fulltext... Hierarchy... Expanded...G01F)

|  | F25C 1/24 |
· · | for refrigerators, e.g. freezing trays

P:0 |  | F25C 3/00 |
Production of ice or snow for the purposes specified in the subgroups of this group

|  | F25C 3/02 |
· | for ice rinks (shape of rinks Fulltext... Hierarchy... Expanded...A63C 19/10; construction of rinks Fulltext... Hierarchy... Expanded...E01C)

|  | F25C 3/04 |
· | for sledging or ski trails; Production of artificial snow (shape of trails Fulltext... Hierarchy... Expanded...A63C 19/10; construction of trails Fulltext... Hierarchy... Expanded...E01C)

P:20 |  | F25C 5/00 |
Working or distributing ice

|  | F25C 5/02 |
· | Tools or machines for disintegrating, removing, or harvesting ice

|  | F25C 5/04 |
· · | without the use of saws

|  | F25C 5/06 |
· · · | by deforming bodies with which the ice is in contact, e.g. by inflatable members

|  | F25C 5/08 |
· · · | by heating bodies in contact with the ice

|  | F25C 5/10 |
· · · · | using hot refrigerant; using fluid heated by refrigerant

|  | F25C 5/12 |
· · · | Ice-shaving machines

|  | F25C 5/14 |
· | Tools or machines for shaping or finishing ice pieces, e.g. ice presses

|  | F25C 5/16 |
· | Tools or devices for ice handling not covered by any other subclass

|  | F25C 5/18 |
· | Storing ice