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 10/00); 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)
P:40 F23H 3/00
Grates with hollow bars
P:30 F23H 5/00
Double grates
P:10 F23H 7/00
Inclined grates (inclined travelling grates F23H 11/00)
P:20 F23H 9/00
Revolving grates; Rocking grates (F23H 7/00 takes precedence)
P:0 F23H 11/00
Travelling grates
P:60 F23H 13/00
Grates not covered by any of groups F23H 1/00-F23H 11/00
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 9/00; for travelling grates F23H 11/00)
P:80 F23H 17/00
Details of grates