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
 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 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 C06D 5/00; gas-turbine plants characterised by the arrangement of the combustion chamber in the plant F02C 3/14; arrangement of afterburners in jet-propulsion plants F02K 3/10; combustion chambers of rocket engine plants 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 F23R 3/54; cyclone or vortex type combustion chambers 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 (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 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 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 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 F23C 10/16)  [3]
P:0 F23R 7/00
Intermittent or explosive combustion chambers  [3]