|  | 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

|  | F23 |
COMBUSTION APPARATUS; COMBUSTION PROCESSES

|  | F23 |
Note(s) In this class, the following terms or expressions are used with the meanings indicated: "combustion" means the direct combination of oxygen gas, e.g. in air, and a burnable substance. Any other heat-producing combination of chemical substances, e.g. hydrogen peroxide and methane, iron oxide and aluminium, is covered by section C or by subclass Fulltext... Hierarchy... Expanded...F24J; "combustion chamber" means a chamber in which fuel is burned to establish a self-supporting fire or flame and which surrounds that fire or flame; "burner" means a device by which fluent fuel is passed to a combustion space where it burns to produce a self-supporting flame; "air" means a mixture of gases containing free oxygen and able to promote or support combustion.

|  | F23D |
BURNERS (generating combustion products of high pressure or high velocity Fulltext... Hierarchy... Expanded...F23R)

|  | F23D |
Subclass index
BURNERS FOR PULVERULENT FUEL | 1/00
BURNERS FOR COMBUSTION OF A LIQUID |
Using capillary action | 3/00
Using fuel evaporation; direct spraying action | 5/00; 11/00
Using fuel impingement on a surface | 7/00, 9/00
BURNERS FOR COMBUSTION OF A GAS | 14/00
BURNERS FOR COMBUSTION OF GASEOUS OR LIQUID OR PULVERULENT FUEL | 17/00
OTHER BURNERS | 21/00
ASSEMBLIES OF TWO OR MORE BURNERS | 23/00

P:20 |  | F23D 1/00 |
Burners for combustion of pulverulent fuel (arrangement or mounting of burners Fulltext... Hierarchy... Expanded...F23C 5/00)

|  | F23D 3/00 - F23D 11/00 |
Combustion of a liquid

P:60 |  | F23D 3/00 |
Burners using capillary action

P:70 |  | F23D 5/00 |
Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel

P:50 |  | F23D 7/00 |
Burners in which drops of liquid fuel impinge on a surface

P:40 |  | F23D 9/00 |
Burners in which a stream of liquid fuel impinges intermittently on a hot surface

P:30 |  | F23D 11/00 |
Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space (spraying in general Fulltext... Hierarchy... Expanded...B05B, Fulltext... Hierarchy... Expanded...B05D)

|  | F23D 11/10 |
· | the spraying being induced by a gaseous medium, e.g. water vapour

|  | F23D 11/24 |
· | by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space

|  | F23D 11/36 |
· | Details

|  | F23D 11/40 |
· · | Mixing tubes; Burner heads

P:80 |  | F23D 14/00 |
Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid [4]

|  | F23D 14/02 |
· | Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone [4]

|  | F23D 14/04 |
· · | induction type, e.g. Bunsen burner [4]

|  | F23D 14/12 |
· | Radiant burners [4]

|  | F23D 14/18 |
· · | using catalysis for flameless combustion [4]

|  | F23D 14/46 |
· | Details [4]

|  | F23D 14/48 |
· · | Nozzles (for spraying or coating Fulltext... Hierarchy... Expanded...B05B) [4]

|  | F23D 14/72 |
· · | Safety devices, e.g. operative in case of failure of gas supply (protection or supervision of pipe-line systems Fulltext... Hierarchy... Expanded...F17D 5/00) [4]

|  | F23D 17/00 - F23D 23/00 |
Other burners

P:10 |  | F23D 17/00 |
Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel

P:90 |  | F23D 21/00 |
Burners not otherwise provided for

P:0 |  | F23D 23/00 |
Assemblies of two or more burners (gas burners with provision for a retention flame Fulltext... Hierarchy... Expanded...F23D 14/00; arrangement or mounting of burners Fulltext... Hierarchy... Expanded...F23C 5/00; for industrial furnaces Fulltext... Hierarchy... Expanded...F27)