|  | 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.

|  | F23G |
CREMATION FURNACES; CONSUMING WASTE BY COMBUSTION

|  | F23G |
Note(s) This subclass covers also the burning of low-grade fuel of solid, liquid, or gaseous nature.

|  | F23G |
Subclass index
CREMATION FURNACES | 1/00
CONSUMING WASTE BY COMBUSTION |
Processes; Functional types of apparatus | 5/00
Adaptation for specific waste or fuels | 7/00
Details; Accessories | 5/44
Control or safety arrangements | 5/50

P:0 |  | F23G 1/00 |
Furnaces for cremation of human or animal carcasses

P:20 |  | F23G 5/00 |
Incineration of waste (of specific waste Fulltext... Hierarchy... Expanded...F23G 7/00); Incinerator constructions; Details, accessories or control therefor [4]

|  | F23G 5/02 |
· | with pretreatment [4]

|  | F23G 5/027 |
· · | pyrolising or gasifying stage (pyrolisation of sludge Fulltext... Hierarchy... Expanded...C02F 11/00; destructive distillation of carbonaceous materials Fulltext... Hierarchy... Expanded...C10B 53/00) [4]

|  | F23G 5/033 |
· · | comminuting or crushing [4]

|  | F23G 5/04 |
· · | drying [4]

|  | F23G 5/05 |
· · · | using drying grates [4]

|  | F23G 5/08 |
· | having supplementary heating [4]

|  | F23G 5/10 |
· · | electric [4]

|  | F23G 5/12 |
· · | using gaseous or liquid fuel (Fulltext... Hierarchy... Expanded...F23G 5/14 takes precedence) [4]

|  | F23G 5/14 |
· · | including secondary combustion [4]

|  | F23G 5/16 |
· · · | in a separate combustion chamber [4]

|  | F23G 5/18 |
· · · | in a stack [4]

|  | F23G 5/20 |
· | having rotating or oscillating drums [4]

|  | F23G 5/22 |
· · | the drums being conically shaped [4]

|  | F23G 5/24 |
· | having a vertical, substantially cylindrical, combustion chamber [4]

|  | F23G 5/26 |
· · | having rotating bottom [4]

|  | F23G 5/28 |
· · | having raking arms [4]

|  | F23G 5/30 |
· | having a fluidised bed [4]

|  | F23G 5/32 |
· | the waste being subjected to a whirling movement, e.g. cyclonic incinerators [4]

|  | F23G 5/34 |
· | the waste being burnt in a pit or arranged in a heap for combustion [4]

|  | F23G 5/36 |
· | having a conical combustion chamber, e.g. "teepee" incinerators (Fulltext... Hierarchy... Expanded...F23G 5/22 takes precedence) [4]

|  | F23G 5/38 |
· | Multi-hearth arrangements [4]

|  | F23G 5/40 |
· | Portable or mobile incinerators [4]

|  | F23G 5/42 |
· · | of the basket type [4]

|  | F23G 5/44 |
· | Details; Accessories [4]

|  | F23G 5/46 |
· · | Recuperation of heat [4]

|  | F23G 5/48 |
· · | Preventing corrosion [4]

|  | F23G 5/50 |
· | Control or safety arrangements [4]

P:10 |  | F23G 7/00 |
Incinerators or other apparatus specially adapted for consuming specific waste or low grade fuels, e.g. chemicals (Fulltext... Hierarchy... Expanded...F23G 1/00 takes precedence; incinerator closets Fulltext... Hierarchy... Expanded...A47K 11/02; oxidation of sludge Fulltext... Hierarchy... Expanded...C02F 11/06; burners in general, burner details Fulltext... Hierarchy... Expanded...F23D; incinerating radioactive waste Fulltext... Hierarchy... Expanded...G21F 9/00) [4,8]

|  | F23G 7/02 |
· | of bagasse, megasse or the like [4]

|  | F23G 7/04 |
· | of waste liquors, e.g. sulfite liquors [4]

|  | F23G 7/05 |
· | of waste oils [4]

|  | F23G 7/06 |
· | of waste gases or noxious gases, e.g. exhaust gases (exhaust apparatus for machines, engines in general or internal combustion engines Fulltext... Hierarchy... Expanded...F01N; of uncombusted material from primary combustion within apparatus for combustion of solid or fluent fuel Fulltext... Hierarchy... Expanded...F23B, Fulltext... Hierarchy... Expanded...F23C) [4]

|  | F23G 7/07 |
· · | in which combustion takes place in the presence of catalytic material [8]

|  | F23G 7/08 |
· · | using flares, e.g. in stacks [4]

|  | F23G 7/10 |
· | of field or garden waste [4]

|  | F23G 7/12 |
· | of plastics, e.g. rubber [4]

|  | F23G 7/14 |
· | of contaminated soil, e.g. by oil [4]