|  | 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.

|  | F23R |
GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS (chemical aspects of gas production Fulltext... Hierarchy... Expanded...C06D 5/00; gas-turbine plants characterised by the arrangement of the combustion chamber in the plant Fulltext... Hierarchy... Expanded...F02C 3/14; arrangement of afterburners in jet-propulsion plants Fulltext... Hierarchy... Expanded...F02K 3/10; combustion chambers of rocket engine plants Fulltext... Hierarchy... Expanded...F02K 9/00; using such products for specific purposes, see the relevant classes for the purposes)

P:20 |  | F23R 3/00 |
Continuous combustion chambers using liquid or gaseous fuel [3]

|  | F23R 3/02 |
· | characterised by the air-flow or gas-flow configuration (reverse-flow combustion chambers Fulltext... Hierarchy... Expanded...F23R 3/54; cyclone or vortex type combustion chambers Fulltext... Hierarchy... Expanded...F23R 3/58) [3]

|  | F23R 3/04 |
· · | Air inlet arrangements [3]

|  | F23R 3/06 |
· · · | Arrangement of apertures along the flame tube [3]

|  | F23R 3/08 |
· · · · | between annular flame tube sections, e.g. flame tubes with telescopic sections [3]

|  | F23R 3/10 |
· · · | for primary air (Fulltext... Hierarchy... Expanded...F23R 3/06 takes precedence) [3]

|  | F23R 3/12 |
· · · · | inducing a vortex [3]

|  | F23R 3/14 |
· · · · · | by using swirl vanes [3]

|  | F23R 3/16 |
· · | with devices inside the flame tube or the combustion chamber to influence the air or gas flow [3]

|  | F23R 3/18 |
· · · | Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants [3]

|  | F23R 3/20 |
· · · · | incorporating fuel injection means [3]

|  | F23R 3/22 |
· · · · | movable, e.g. to an inoperative position; adjustable, e.g. self-adjusting [3]

|  | F23R 3/24 |
· · · · | of the fluid-screen type [3]

|  | F23R 3/26 |
· · | Controlling the air flow [3]

|  | F23R 3/28 |
· | characterised by the fuel supply (burners Fulltext... Hierarchy... Expanded...F23D) [3]

|  | F23R 3/30 |
· · | comprising fuel prevapourising devices [3]

|  | F23R 3/32 |
· · · | being tubular [3]

|  | F23R 3/34 |
· · | Feeding into different combustion zones [3]

|  | F23R 3/36 |
· · | Supply of different fuels [3]

|  | F23R 3/38 |
· · | comprising rotary fuel injection means [3]

|  | F23R 3/40 |
· | characterised by the use of catalytic means [3]

|  | F23R 3/42 |
· | characterised by the arrangement or form of the flame tubes or combustion chambers [3]

|  | F23R 3/44 |
· · | Combustion chambers comprising a tubular flame tube within a tubular casing (reverse-flow combustion chambers Fulltext... Hierarchy... Expanded...F23R 3/54) [3]

|  | F23R 3/46 |
· · | Combustion chambers comprising an annular arrangement of flame tubes within a common annular casing or within individual casings [3]

|  | F23R 3/48 |
· · · | Flame tube interconnectors, e.g. cross-over tubes [3]

|  | F23R 3/50 |
· · | Combustion chambers comprising an annular flame tube within an annular casing (toroidal combustion chambers Fulltext... Hierarchy... Expanded...F23R 3/52) [3]

|  | F23R 3/52 |
· · | Toroidal combustion chambers [3]

|  | F23R 3/54 |
· · | Reverse-flow combustion chambers [3]

|  | F23R 3/56 |
· · | Combustion chambers having rotary flame tubes [3]

|  | F23R 3/58 |
· · | Cyclone or vortex type combustion chambers [3]

|  | F23R 3/60 |
· · | Support structures; Attaching or mounting means [3]

P:10 |  | F23R 5/00 |
Continuous combustion chambers using solid or pulverulent fuel (fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures Fulltext... Hierarchy... Expanded...F23C 10/16) [3]

P:0 |  | F23R 7/00 |
Intermittent or explosive combustion chambers [3]