|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

LIGHTING AND HEATING

|  | F23 |
COMBUSTION APPARATUS; COMBUSTION PROCESSES

|  | F23 |
Note(s) In this class, the following terms 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 provided for in Section C or in sub-class 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 PRODUCTS BY COMBUSTION

|  | F23G |
Note(s) This sub-class includes the burning of low-grade fuel of solid, liquid, or gaseous nature.

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

|  | F23G 3/00 |
Incinerators for use in buildings

|  | F23G 3/02 |
· | with supplementary heating

|  | F23G 3/04 |
· · | electric heating

|  | F23G 3/06 |
· · | using gaseous or liquid fuel

|  | F23G 5/00 |
Incinerators for town refuse (steam generation Fulltext... Hierarchy... Expanded...F22)

|  | F23G 5/02 |
· | with pretreatment other than drying

|  | F23G 5/04 |
· | with preliminary drying grates (drying without combustion Fulltext... Hierarchy... Expanded...F26B)

|  | F23G 5/06 |
· | with rotating drums

|  | F23G 5/08 |
· | with supplementary heating

|  | F23G 5/10 |
· · | electric heating

|  | F23G 5/12 |
· · | using gaseous or liquid fuel

|  | F23G 7/00 |
Incinerators or other apparatus for consuming industrial waste, e.g. chemicals

|  | F23G 7/02 |
· | for burning bagasse or megasse

|  | F23G 7/04 |
· | for burning waste liquors, e.g. sulphite liquor from paper-making plant

|  | F23G 7/06 |
· | for consuming waste gases or noxious gases

|  | F23G 9/00 |
Incinerators for field or garden refuse