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| SECTION F– MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
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| F 24 | HEATING; RANGES; VENTILATING (protecting plants by heating in gardens, orchards, or forests A 01 G 13/06; baking ovens and apparatus A 21 B; cooking devices other than ranges A 47 J; forging B 21 J, B 21 K; specially adapted for vehicles, see the relevant subclasses of classes B 60 to B 64; combustion apparatus in general F 23; drying F 26 B; ovens in general F 27; electric heating elements or arrangements H 05 B) |
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| F 24 J | PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR (engines or other mechanisms for producing mechanical power from heat, see the relevant classes, e.g. F 03 G for using natural heat) |
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| Note |
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| Processes using enzymes or micro-organisms in order to: |
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| (i) | liberate, separate or purify a pre-existing compound or composition, or to |
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| (ii) | treat textiles or clean solid surfaces of materials |
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| are further classified in subclass C 12 S. [5] |
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1/ | 00 | Apparatus or devices using heat produced by exothermal chemical reactions (for cooking-vessels A 47 J 36/28; self-heating compresses A 61 F 7/03) |
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1/ | 02 | to |
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1/ | 04 | (covered by F 24 J 1/00) |
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2/ | 00 | Use of solar heat, e.g. solar heat collectors (distillation or evaporation of water using solar energy C 02 F 1/14; roof covering aspects of energy collecting devices E 04 D 13/18; devices for producing mechanical power from solar energy F 03 G 6/00; semi-conductor devices adapted for converting solar energy into electrical energy H 01 L 25/00, H 01 L 31/00; semiconductor devices including arrays of solar cells using heat energy H 01 L 31/058; generators in which light radiation is directly converted into electrical energy H 02 N 6/00) |
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2/ | 02 | . | Solar heat collectors with support for article heated, e.g. stoves, ranges, crucibles, furnaces or ovens using solar heat [4] |
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2/ | 04 | . | Solar heat collectors having working fluid conveyed through collector [4] |
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2/ | 05 | . | . | surrounded by a transparent enclosure, e.g. evacuated solar collectors [6] |
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2/ | 06 | . | . | having concentrating elements (optical elements or systems per se G 02 B) [4] |
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2/ | 07 | . | . | . | Receivers working at high temperature, e.g. for solar power plants [6] |
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2/ | 08 | . | . | . | having lenses as concentrating elements [4] |
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2/ | 10 | . | . | . | having reflectors as concentrating elements [4] |
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2/ | 12 | . | . | . | . | parabolic [4] |
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2/ | 13 | . | . | . | . | hemispherical [6] |
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2/ | 14 | . | . | . | . | semi-cylindrical or cylindro-parabolic [4] |
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2/ | 15 | . | . | . | . | conical [6] |
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2/ | 16 | . | . | . | . | having flat plates [4] |
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2/ | 18 | . | . | . | . | spaced, opposed interacting reflecting surfaces [4] |
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2/ | 20 | . | . | the working fluid being conveyed between plates [4] |
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2/ | 22 | . | . | . | having extended surfaces, e.g. protrusions, corrugations (F 24 J 2/28 takes precedence) [4] |
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2/ | 23 | . | . | the working fluid trickling freely over collector elements [6] |
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2/ | 24 | . | . | the working fluid being conveyed through tubular heat absorbing conduits [4] |
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2/ | 26 | . | . | . | having extended surfaces, e.g. protrusions (F 24 J 2/28 takes precedence) [4] |
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2/ | 28 | . | . | having permeable mass, foraminous or porous materials [4] |
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2/ | 30 | . | . | with means to exchange heat between plural fluids [4] |
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2/ | 32 | . | . | having evaporator and condenser section, e.g. heat pipe [4] |
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2/ | 34 | . | . | having heat storage mass [4] |
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2/ | 36 | . | Rollable or foldable collector units [4] |
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2/ | 38 | . | employing tracking means (F 24 J 2/02, F 24 J 2/06 take precedence; rotary supports or mountings therefor F 24 J 2/54; direction-finders for determining the direction from which electromagnetic waves are being received G 01 S 3/78; control of position or direction G 05 D 3/00) [4] |
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2/ | 40 | . | Control arrangements [4] |
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2/ | 42 | . | Solar heat systems not otherwise provided for [4] |
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2/ | 44 | . | . | having thermosiphonic circulation [4] |
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2/ | 46 | . | Component parts, details or accessories of solar heat collectors [4] |
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2/ | 48 | . | . | characterised by the absorber material [4] |
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2/ | 50 | . | . | Transparent coverings [4] |
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2/ | 51 | . | . | Thermal insulation (F 24 J 2/50 takes precedence) [6] |
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2/ | 52 | . | . | Arrangement of mountings or supports [4] |
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2/ | 54 | . | . | . | specially adapted for rotary movement [6] |
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3/ | 00 | Other production or use of heat, not derived from combustion (use of solar heat F 24 J 2/00; materials therefor C 09 K 5/00) |
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3/ | 06 | . | using natural heat [4] |
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3/ | 08 | . | . | using geothermal heat (devices for producing mechanical power from geothermal energy F 03 G 4/00) [4,5] |
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