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.

 F23H
GRATES (inlets for fluidisation air for fluidised bed combustion apparatus F23C 10/20); CLEANING OR RAKING GRATES
 F23H
Subclass index
GRATES
With solid bars; with hollow bars 1/00; 3/00
Double; inclined; revolving or rocking; travelling 5/00; 7/00; 9/00; 11/00
Other types 13/00
Details 17/00
CLEANING ARRANGEMENTS FOR GRATES, MOVING FUEL ALONG GRATE 15/00
P:50 F23H 1/00
Grates with solid bars (double grates F23H 5/00)
 F23H 1/02
·  having provision for air supply or air preheating, e.g. air-supply or blast fittings which form part of the grate structure or serve as supports
 F23H 1/04
·  having a variable burning surface
 F23H 1/06
·  having bars at different levels
 F23H 1/08
·  Vertical grates
P:40 F23H 3/00
Grates with hollow bars
 F23H 3/02
·  internally cooled
 F23H 3/04
·  externally cooled, e.g. with water, steam, or air
P:30 F23H 5/00
Double grates
P:10 F23H 7/00
Inclined grates (inclined travelling grates F23H 11/12)
 F23H 7/02
·  with fixed bars
 F23H 7/04
·  ·  in parallel disposition
 F23H 7/06
·  with movable bars disposed parallel to direction of fuel feeding
 F23H 7/08
·  ·  reciprocating along their axes
 F23H 7/10
·  ·  rocking about their axes
 F23H 7/12
·  with movable bars disposed transversely to direction of fuel feeding
 F23H 7/14
·  ·  reciprocating along their axes
 F23H 7/16
·  ·  rocking about their axes
 F23H 7/18
·  ·  reciprocating in an upward direction
P:20 F23H 9/00
Revolving grates; Rocking grates (F23H 7/00 takes precedence)
 F23H 9/02
·  Revolving cylindrical grates
 F23H 9/04
·  Grates rocked as a whole
 F23H 9/06
·  the bars being rocked about axes transverse to their lengths
 F23H 9/08
·  the bars being rocked about their longitudinal axes
 F23H 9/10
·  ·  and modified to move fuel along the grate
 F23H 9/12
·  the bars being vertically movable in a plane
P:0 F23H 11/00
Travelling grates
 F23H 11/02
·  with the bars disposed on transverse bearers
 F23H 11/04
·  with the bars pivoted at one side
 F23H 11/06
·  with the bars movable relatively to one another
 F23H 11/08
·  with several individually-movable grate surfaces
 F23H 11/10
·  with special provision for supply of air from below and for regulating air supply
 F23H 11/12
·  inclined travelling grates; Stepped travelling grates
 F23H 11/14
·  serving as auxiliary grates
 F23H 11/16
·  for multi-layer stoking
 F23H 11/18
·  Details
 F23H 11/20
·  ·  Driving means
 F23H 11/22
·  ·  Moving fuel along grate; Cleaning of grate
 F23H 11/24
·  ·  Removal of ashes; Removal of clinker
 F23H 11/26
·  ·  ·  by dumping
 F23H 11/28
·  ·  Replaceable burning-surface
P:60 F23H 13/00
Grates not covered by any of groups F23H 1/00-F23H 11/00
 F23H 13/02
·  Basket grates, e.g. with shaking arrangement
 F23H 13/04
·  Telescoping grates
 F23H 13/06
·  Dumping-grates
 F23H 13/08
·  Grates specially adapted for gas generators and also applicable to furnaces
P:70 F23H 15/00
Cleaning arrangements for grates (not forming part of the grate F23J 1/00); Moving fuel along grate (rocking grates modified for moving fuel F23H 9/10; for travelling grates F23H 11/22)
P:80 F23H 17/00
Details of grates
 F23H 17/02
·  End fittings on bars
 F23H 17/04
·  ·  of travelling grates
 F23H 17/06
·  Provision for vertical adjustment of grate
 F23H 17/08
·  Bearers; Frames; Spacers; Supports
 F23H 17/10
·  ·  Dead plates; Imperforate fuel supports
 F23H 17/12
·  Fire-bars