| F | SK | SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
| F25 | KL | REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES |
| F25C | UKL | 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 1/00 | HGR | Production of ice (F25C 3/00 takes precedence) |
| F25C 1/02 | UGR1 | | . | Production of natural ice, i.e. without refrigeration |
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| F25C 1/04 | UGR1 | | . | by using stationary moulds |
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| F25C 1/06 | UGR2 | | . . | open or openable at both ends |
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| F25C 1/08 | UGR1 | | . | by immersing freezing chambers or plates into water |
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| F25C 1/10 | UGR1 | | . | by using rotating or otherwise moving moulds (F25C 1/08 takes precedence) |
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| F25C 1/12 | UGR1 | | . | by freezing water on cooled surfaces, e.g. to form slabs |
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| F25C 1/14 | UGR2 | | . . | to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes |
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| F25C 1/16 | UGR1 | | . | by partially evaporating water in a vacuum |
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| F25C 1/18 | UGR1 | | . | of a particular transparency or translucency, e.g. by injecting air |
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| F25C 1/20 | UGR2 | |
| F25C 1/22 | UGR1 | | . | Construction of moulds; Filling devices therefor (metering by volume in general G01F) |
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| F25C 1/24 | UGR2 | | . . | for refrigerators, e.g. freezing trays |
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| F25C 3/00 | HGR | Production of ice or snow for the purposes specified in the subgroups of this group |
| F25C 3/02 | UGR1 | | . | for ice rinks (shape of rinks A63C 19/10; construction of rinks E01C) |
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| F25C 3/04 | UGR1 | | . | for sledging or ski trails; Production of artificial snow (shape of trails A63C 19/10; construction of trails E01C) |
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| F25C 5/00 | HGR | Working or distributing ice |
| F25C 5/02 | UGR1 | | . | Tools or machines for disintegrating, removing, or harvesting ice |
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| F25C 5/04 | UGR2 | | . . | without the use of saws |
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| F25C 5/06 | UGR3 | | . . . | by deforming bodies with which the ice is in contact, e.g. by inflatable members |
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| F25C 5/08 | UGR3 | | . . . | by heating bodies in contact with the ice |
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| F25C 5/10 | UGR4 | | . . . . | using hot refrigerant; using fluid heated by refrigerant |
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| F25C 5/12 | UGR3 | | . . . | Ice-shaving machines |
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| F25C 5/14 | UGR1 | | . | Tools or machines for shaping or finishing ice pieces, e.g. ice presses |
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| F25C 5/16 | UGR1 | | . | Tools or devices for ice handling not covered by any other subclass |
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| F25C 5/18 | UGR1 | |