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 fluidF01C
liquid onlyF04C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF04B
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
ENGINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF03C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF03C
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
PUMPS
positive displacement
rotary or oscillating pistonF04C
reciprocating piston or otherF04B
non-positive displacementF04D
  
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]

P:0 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)
P:10 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 specially 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]
P:20 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]