|  | B |
SECTION B — PERFORMING OPERATIONS

SEPARATING AND MIXING

|  | B04 |
CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES (using centrifugal force for the separation of particles from liquids or gases, in general Fulltext... Hierarchy... Expanded...B01D, e.g. Fulltext... Hierarchy... Expanded...B01D 21/26, Fulltext... Hierarchy... Expanded...B01D 43/00, Fulltext... Hierarchy... Expanded...B01D 45/12)

|  | B04B |
CENTRIFUGES (high-speed drum mills Fulltext... Hierarchy... Expanded...B02C 19/11; domestic spin driers Fulltext... Hierarchy... Expanded...D06F)

|  | B04B |
Note(s) This sub-class deals with machines or apparatus for separating, mixing, drying, extracting, purifying, or like treating in which centrifugal effects are generated by rotary bowls or other rotors. Where such machines or apparatus involve pumping effects, such effects must be incidental or subsidiary to the treating.

|  | B04C |
APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES

|  | B04C |
Note(s) This sub-class deals with apparatus for separating, mixing or like treating in which centrifugal effects are generated by free vortex flow, otherwise than by rotary bowls, rotors or curved passages (jet mills Fulltext... Hierarchy... Expanded...B02C 19/06; cyclonic combustion chambers for gas turbines Fulltext... Hierarchy... Expanded...F02C; cyclonic combustion apparatus Fulltext... Hierarchy... Expanded...F23).