|  | 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.

|  | F23Q |
IGNITION (devices for igniting matches Fulltext... Hierarchy... Expanded...A24F; explosive or thermic compositions Fulltext... Hierarchy... Expanded...C06B; chemical igniters Fulltext... Hierarchy... Expanded...C06C; devices or installations peculiar to internal-combustion engines, except glowing plugs, Fulltext... Hierarchy... Expanded...F02P); EXTINGUISHING DEVICES

|  | F23Q |
Subclass index
IGNITERS |
Mechanical | 1/00
Using electric sparks | 3/00, 5/00
Incandescent | 7/00
With pilot flame | 9/00
By catalysis | 11/00
Other | 13/00
REMOTE IGNITION | 21/00
TESTING | 23/00
LIGHTERS CONTAINING FUEL | 2/00, 3/01, 7/00
EXTINGUISHING DEVICES | 25/00

P:80 |  | F23Q 1/00 |
Mechanical igniters (lighters containing fuel Fulltext... Hierarchy... Expanded...F23Q 2/00; matches Fulltext... Hierarchy... Expanded...C06F)

|  | F23Q 1/02 |
· | using friction or shock effects

|  | F23Q 1/04 |
· · | on a part moved by the fuel-controlling member, e.g. by a tap on a gas cooker

|  | F23Q 1/06 |
· · | Portable igniters

P:70 |  | F23Q 2/00 |
Lighters containing fuel, e.g. for cigarettes

|  | F23Q 2/02 |
· | Lighters with liquid fuel

|  | F23Q 2/04 |
· · | with cerium-iron alloy and wick

|  | F23Q 2/06 |
· · · | with friction wheel

|  | F23Q 2/08 |
· · · · | with ignition by spring action of the cover

|  | F23Q 2/10 |
· · · | with other friction member

|  | F23Q 2/12 |
· · | with cerium-iron alloy without wick

|  | F23Q 2/14 |
· · | with cerium-iron alloy and torch ignited by striking or pushing

|  | F23Q 2/16 |
· | Lighters with gaseous fuel, e.g. the gas being stored in liquid phase

|  | F23Q 2/167 |
· · | with adjustable flame [3]

|  | F23Q 2/173 |
· · · | Valves therefor (valves in general Fulltext... Hierarchy... Expanded...F16K) [3]

|  | F23Q 2/18 |
· | Lighters with solid fuel

|  | F23Q 2/20 |
· · | with cerium-iron alloy and friction wheel

|  | F23Q 2/22 |
· · | with cerium-iron alloy and tinder

|  | F23Q 2/24 |
· · | with ignition pills or strips with inflammable parts

|  | F23Q 2/26 |
· · | combined with liquid-fuel lighters

|  | F23Q 2/28 |
· | Lighters characterised by electrical ignition of the fuel (lighters with electrically-produced sparks but without fuel Fulltext... Hierarchy... Expanded...F23Q 3/00)

|  | F23Q 2/30 |
· | Lighters characterised by catalytic ignition of fuel (catalytic igniters without fuel Fulltext... Hierarchy... Expanded...C06C)

|  | F23Q 2/32 |
· | Lighters characterised by being combined with other objects (combinations with smokers' equipment Fulltext... Hierarchy... Expanded...A24F)

|  | F23Q 2/34 |
· | Component parts or accessories

|  | F23Q 2/36 |
· · | Casings

|  | F23Q 2/38 |
· · · | with containers for flints or tools

|  | F23Q 2/40 |
· · | Cover fastenings

|  | F23Q 2/42 |
· · | Fuel containers; Closures for fuel containers

|  | F23Q 2/44 |
· · | Wicks; Wick guides or fastenings

|  | F23Q 2/46 |
· · | Friction wheels; Arrangement of friction wheels

|  | F23Q 2/48 |
· · | Flints (composition, manufacture Fulltext... Hierarchy... Expanded...C06C 15/00); Guides for, or arrangements of, flints

|  | F23Q 2/50 |
· · | Protecting coverings

|  | F23Q 2/52 |
· · | Filling devices (in general Fulltext... Hierarchy... Expanded...B67D)

P:40 |  | F23Q 3/00 |
Igniters using electrically-produced sparks (sparking-plugs Fulltext... Hierarchy... Expanded...H01T 13/00)

|  | F23Q 3/01 |
· | Hand-held lighters, e.g. for cigarettes

P:30 |  | F23Q 5/00 |
Make-and-break ignition, i.e. with spark generated between electrodes by breaking contact therebetween (specially adapted for internal-combustion engines Fulltext... Hierarchy... Expanded...F02P 15/00)

P:50 |  | F23Q 7/00 |
Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes (circuits therefor Fulltext... Hierarchy... Expanded...H01T 15/00); Electrically-heated glowing plugs

|  | F23Q 7/02 |
· | for igniting solid fuel

|  | F23Q 7/04 |
· · | with fans for transfer of heat to fuel

|  | F23Q 7/06 |
· | structurally associated with fluid-fuel burners (lighters containing fuel Fulltext... Hierarchy... Expanded...F23Q 2/00)

|  | F23Q 7/08 |
· · | for evaporating and igniting liquid fuel, e.g. in hurricane lanterns

|  | F23Q 7/10 |
· · | for gaseous fuel, e.g. in welding appliances

|  | F23Q 7/12 |
· · · | actuated by gas-controlling device

|  | F23Q 7/14 |
· | Portable igniters

|  | F23Q 7/16 |
· · | with built-in battery

|  | F23Q 7/18 |
· · | with built-in generator

|  | F23Q 7/20 |
· · | with built-in mains transformer

|  | F23Q 7/22 |
· | Details

|  | F23Q 7/24 |
· · | Safety arrangements

|  | F23Q 7/26 |
· · · | Provision for re-ignition

P:60 |  | F23Q 9/00 |
Pilot flame igniters

|  | F23Q 9/02 |
· | without interlock with main fuel supply

|  | F23Q 9/04 |
· · | for upright burners, e.g. gas-cooker burners

|  | F23Q 9/06 |
· · | for inverted burners, e.g. gas lamps

|  | F23Q 9/08 |
· | with interlock with main fuel supply

|  | F23Q 9/10 |
· · | to determine the sequence of supply of fuel to pilot and main burners

|  | F23Q 9/12 |
· · | to permit the supply to the main burner in dependence upon existence of pilot flame

|  | F23Q 9/14 |
· · · | using electric means, e.g. by light-sensitive elements

P:10 |  | F23Q 11/00 |
Arrangement of catalytic igniters (catalytic igniters per se Fulltext... Hierarchy... Expanded...C06C)

|  | F23Q 11/04 |
· | at the burner

|  | F23Q 11/06 |
· | remote from the burner, e.g. on the chimney of a lamp

|  | F23Q 11/08 |
· | on a part moved by the fuel-controlling member

|  | F23Q 11/10 |
· · | and moving out of the flame after ignition

P:90 |  | F23Q 13/00 |
Igniters not otherwise provided for

|  | F23Q 13/02 |
· | using gas burners, e.g. gas pokers

|  | F23Q 13/04 |
· | using portable burners, e.g. torches, fire pots

P:20 |  | F23Q 21/00 |
Devices for effecting ignition from a remote location

P:0 |  | F23Q 23/00 |
Testing of ignition installations (peculiar to internal-combustion engines Fulltext... Hierarchy... Expanded...F02P 17/00; testing of sparking plugs Fulltext... Hierarchy... Expanded...G01M 19/02)

|  | F23Q 23/02 |
· | Testing of ignition timing

|  | F23Q 23/08 |
· | Testing of components

|  | F23Q 23/10 |
· · | electrically

P:100 |  | F23Q 25/00 |
Extinguishing devices, e.g. for blowing-out or snuffing candle flames (for cigarettes Fulltext... Hierarchy... Expanded...A24F)