F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
LIGHTING; HEATING
 F24
HEATING; RANGES; VENTILATING (protecting plants by heating in gardens, orchards, or forests A01G 13/06; baking ovens and apparatus A21B; cooking devices other than ranges A47J; forging B21J, B21K; specially adapted for vehicles, see the relevant subclasses of classes B60-B64; combustion apparatus in general F23; drying F26B; ovens in general F27; electric heating elements or arrangements H05B)
 F24

Note(s)

In this class, the following terms are used with the meanings indicated:

  • "stove" includes apparatus which may have an open fire, e.g. fireplace;
  • "range" means an apparatus for cooking having elements that perform different cooking operations or cooking and heating operations.

 F24J
PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR (materials therefor C09K 5/00; engines or other mechanisms for producing mechanical power from heat, see the relevant classes, e.g. F03G for using natural heat)
 F24J

Note(s)

Processes using enzymes or micro-organisms in order to:

  1. liberate, separate or purify a pre-existing compound or composition, or to
  2. treat textiles or clean solid surfaces of materials
are further classified in subclass C12S.  [5]

 F24J 1/00
Apparatus or devices using heat produced by exothermal chemical reactions other than by combustion (for cooking-vessels A47J 36/28; self-heating compresses A61F 7/03; materials for the production of heat or cold undergoing non-reversible chemical reactions, other than by combustion, when used C09K 5/18)
 F24J 2/00
Use of solar heat, e.g. solar heat collectors (distillation or evaporation of water using solar energy C02F 1/14; roof covering aspects of energy collecting devices E04D 13/18; devices for producing mechanical power from solar energy F03G 6/00; semi-conductor devices adapted for converting solar energy into electrical energy H01L 25/00, H01L 31/00; semiconductor devices including arrays of solar cells using heat energy H01L 31/058; generators in which light radiation is directly converted into electrical energy H02N 6/00)  [4,5]
 F24J 2/02
·  Solar heat collectors with support for article heated, e.g. stoves, ranges, crucibles, furnaces or ovens using solar heat  [4]
 F24J 2/04
·  Solar heat collectors having working fluid conveyed through collector  [4]
 F24J 2/05
·  ·  surrounded by a transparent enclosure, e.g. evacuated solar collectors  [6]
 F24J 2/06
·  ·  having concentrating elements (optical elements or systems per se G02B)  [4]
 F24J 2/07
·  ·  ·  Receivers working at high temperature, e.g. for solar power plants  [6]
 F24J 2/08
·  ·  ·  having lenses as concentrating elements  [4]
 F24J 2/10
·  ·  ·  having reflectors as concentrating elements  [4]
 F24J 2/12
·  ·  ·  ·  parabolic  [4]
 F24J 2/13
·  ·  ·  ·  hemispherical  [6]
 F24J 2/14
·  ·  ·  ·  semi-cylindrical or cylindro-parabolic  [4]
 F24J 2/15
·  ·  ·  ·  conical  [6]
 F24J 2/16
·  ·  ·  ·  having flat plates  [4]
 F24J 2/18
·  ·  ·  ·  spaced, opposed interacting reflecting surfaces  [4]
 F24J 2/20
·  ·  the working fluid being conveyed between plates  [4]
 F24J 2/22
·  ·  ·  having extended surfaces, e.g. protrusions, corrugations (F24J 2/28 takes precedence)  [4]
 F24J 2/23
·  ·  the working fluid trickling freely over collector elements  [6]
 F24J 2/24
·  ·  the working fluid being conveyed through tubular heat absorbing conduits  [4]
 F24J 2/26
·  ·  ·  having extended surfaces, e.g. protrusions (F24J 2/28 takes precedence)  [4]
 F24J 2/28
·  ·  having permeable mass, foraminous or porous materials  [4]
 F24J 2/30
·  ·  with means to exchange heat between plural fluids  [4]
 F24J 2/32
·  ·  having evaporator and condenser section, e.g. heat pipe  [4]
 F24J 2/34
·  ·  having heat storage mass  [4]
 F24J 2/36
·  Rollable or foldable collector units  [4]
 F24J 2/38
·  employing tracking means (F24J 2/02, F24J 2/06 take precedence; rotary supports or mountings therefor F24J 2/54; direction-finders for determining the direction from which electromagnetic waves are being received G01S 3/78; control of position or direction G05D 3/00)  [4]
 F24J 2/40
·  Control arrangements  [4]
 F24J 2/42
·  Solar heat systems not otherwise provided for  [4]
 F24J 2/44
·  ·  having thermosiphonic circulation  [4]
 F24J 2/46
·  Component parts, details or accessories of solar heat collectors  [4]
 F24J 2/48
·  ·  characterised by the absorber material  [4]
 F24J 2/50
·  ·  Transparent coverings  [4]
 F24J 2/51
·  ·  Thermal insulation (F24J 2/50 takes precedence)  [6]
 F24J 2/52
·  ·  Arrangement of mountings or supports  [4]
 F24J 2/54
·  ·  ·  specially adapted for rotary movement  [6]
 F24J 3/00
Other production or use of heat, not derived from combustion (use of solar heat F24J 2/00)
 F24J 3/06
·  using natural heat  [4]
 F24J 3/08
·  ·  using geothermal heat (devices for producing mechanical power from geothermal energy F03G 4/00)  [4,5]