|  | 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

|  | F24 |
HEATING; RANGES; VENTILATING (protecting plants by heating in gardens, orchards, or forests Fulltext... Hierarchy... Expanded...A01G 13/06; baking ovens and apparatus Fulltext... Hierarchy... Expanded...A21B; cooking devices other than ranges Fulltext... Hierarchy... Expanded...A47J; forging Fulltext... Hierarchy... Expanded...B21J, Fulltext... Hierarchy... Expanded...B21K; specially adapted for vehicles, see the relevant subclasses of classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B60-B64; combustion apparatus in general Fulltext... Hierarchy... Expanded...F23; drying Fulltext... Hierarchy... Expanded...F26B; ovens in general Fulltext... Hierarchy... Expanded...F27; electric heating elements or arrangements Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...C09K 5/00; engines or other mechanisms for producing mechanical power from heat, see the relevant classes, e.g. Fulltext... Hierarchy... Expanded...F03G for using natural heat)

|  | F24J |
Note(s) Processes using enzymes or micro-organisms in order to: liberate, separate or purify a pre-existing compound or composition, or to treat textiles or clean solid surfaces of materials are further classified in subclass Fulltext... Hierarchy... Expanded...C12S. [5]

P:0 |  | F24J 1/00 |
Apparatus or devices using heat produced by exothermal chemical reactions other than by combustion (for cooking-vessels Fulltext... Hierarchy... Expanded...A47J 36/24; self-heating compresses Fulltext... Hierarchy... Expanded...A61F 7/02; materials for the production of heat or cold undergoing non-reversible chemical reactions, other than by combustion, when used Fulltext... Hierarchy... Expanded...C09K 5/00)

P:10 |  | F24J 2/00 |
Use of solar heat, e.g. solar heat collectors (distillation or evaporation of water using solar energy Fulltext... Hierarchy... Expanded...C02F 1/14; roof covering aspects of energy collecting devices Fulltext... Hierarchy... Expanded...E04D 13/18; devices for producing mechanical power from solar energy Fulltext... Hierarchy... Expanded...F03G 6/00; semi-conductor devices specially adapted for converting solar energy into electrical energy Fulltext... Hierarchy... Expanded...H01L 25/00, Fulltext... Hierarchy... Expanded...H01L 31/00; semiconductor devices including arrays of solar cells using heat energy Fulltext... Hierarchy... Expanded...H01L 31/058; generators in which light radiation is directly converted into electrical energy Fulltext... Hierarchy... Expanded...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 2/06 |
· · | having concentrating elements (optical elements or systems per se Fulltext... Hierarchy... Expanded...G02B) [4]

|  | F24J 2/36 |
· | Rollable or foldable collector units [4]

|  | F24J 2/38 |
· | employing tracking means (Fulltext... Hierarchy... Expanded...F24J 2/02, Fulltext... Hierarchy... Expanded...F24J 2/06 take precedence; rotary supports or mountings therefor Fulltext... Hierarchy... Expanded...F24J 2/00; direction-finders for determining the direction from which electromagnetic waves are being received Fulltext... Hierarchy... Expanded...G01S 3/78; control of position or direction Fulltext... Hierarchy... Expanded...G05D 3/00) [4]

|  | F24J 2/40 |
· | Control arrangements [4]

|  | F24J 2/42 |
· | Solar heat systems not otherwise provided for [4]

P:20 |  | F24J 3/00 |
Other production or use of heat, not derived from combustion (use of solar heat Fulltext... Hierarchy... Expanded...F24J 2/00)