|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

SEPARATING; MIXING

|  | B01 - B09 |
Note(s) The following notes are meant to assist in the use of this part of the classification scheme; they must not be read as modifying in any way the elaborations. In this sub-section, the separation of different materials, e.g. of different matter, size, or state, is predominantly found in the following subclasses: Fulltext... Hierarchy... Expanded...B01D Fulltext... Hierarchy... Expanded...B03B, Fulltext... Hierarchy... Expanded...B03C, Fulltext... Hierarchy... Expanded...B03D Fulltext... Hierarchy... Expanded...B04B, Fulltext... Hierarchy... Expanded...B04C, Fulltext... Hierarchy... Expanded...B07B, Fulltext... Hierarchy... Expanded...B07C. The classifying characteristics of these subclasses are: the physical state of the matter to be separated; the principle of the process used; particular kinds of apparatus. The first of these characteristics involves six different aspects, assembled in three groups: liquid/liquid or liquid/gas and gas/gas; solid/liquid or solid/gas; solid/solid. These subclasses are to be used according to the following general rules: Fulltext... Hierarchy... Expanded...B01D is the most general class as far as separation other than solids from solids is concerned. Apparatus for separating solids from solids are covered by Fulltext... Hierarchy... Expanded...B03B when the process concerned is regarded as the equivalent of ''washing'' in the sense of the mining art, even if such apparatus is a pneumatic one, especially pneumatic tables or jigs. Screens per se are not covered by this subclass but are classified in Fulltext... Hierarchy... Expanded...B07B, even if they are being used in a wet process. All other apparatus for the separation of solids from solids according to dry methods are classified in Fulltext... Hierarchy... Expanded...B07B. If the separation takes place as a result of the detection or measurement of some feature of the material or articles to be sorted it is classified in Fulltext... Hierarchy... Expanded...B07C. It should also be noted that the separation of isotopes of the same chemical element is covered by Fulltext... Hierarchy... Expanded...B01D 59/00, whatever process or apparatus is employed. The following scheme illustrates the classification according to these rules.

|  | B08 |
CLEANING

|  | B08B |
CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL (brushes Fulltext... Hierarchy... Expanded...A46; devices for domestic or like cleaning Fulltext... Hierarchy... Expanded...A47L; separation of particles from liquids or gases Fulltext... Hierarchy... Expanded...B01D; separation of solids Fulltext... Hierarchy... Expanded...B03, Fulltext... Hierarchy... Expanded...B07; spraying or applying liquids or other fluent materials to surfaces in general Fulltext... Hierarchy... Expanded...B05; cleaning devices for conveyers Fulltext... Hierarchy... Expanded...B65G 45/10; concurrent cleaning, filling and closing of bottles Fulltext... Hierarchy... Expanded...B67C 7/00; inhibiting corrosion or incrustation in general Fulltext... Hierarchy... Expanded...C23; cleaning streets, permanent ways, beaches or land Fulltext... Hierarchy... Expanded...E01H; parts, details or accessories of swimming or splash baths or pools, specially adapted for cleaning Fulltext... Hierarchy... Expanded...E04H 4/16; preventing or removing electrostatic charges Fulltext... Hierarchy... Expanded...H05F)

|  | B08B |
Note(s) This subclass covers only inventions relating to cleaning, which are usually classified according to one (or more) of the aspects mentioned below, if they are not fully classifiable in a subclass providing for any of the following aspects: the articles cleaned, e.g. bed-pans, urinal or other sanitary devices for bed-ridden persons Fulltext... Hierarchy... Expanded...A61G 9/02, filters, semi-permeable membranes Fulltext... Hierarchy... Expanded...B01D, castings and moulds Fulltext... Hierarchy... Expanded...B22D 29/00, vehicles Fulltext... Hierarchy... Expanded...B60S, coke ovens Fulltext... Hierarchy... Expanded...C10B 43/00, building forms Fulltext... Hierarchy... Expanded...E04G, boilers Fulltext... Hierarchy... Expanded...F22, combustion apparatus Fulltext... Hierarchy... Expanded...F23, furnaces Fulltext... Hierarchy... Expanded...F27; the general nature of the cleaning, e.g. preparing for sugar manufacture Fulltext... Hierarchy... Expanded...A23N, domestic cleaning Fulltext... Hierarchy... Expanded...A47L, treatment of textiles Fulltext... Hierarchy... Expanded...D06, laundry Fulltext... Hierarchy... Expanded...D06F, air-conditioning Fulltext... Hierarchy... Expanded...F24F; the particular operation performed, e.g. filtering Fulltext... Hierarchy... Expanded...B01D, separating of solids Fulltext... Hierarchy... Expanded...B03, Fulltext... Hierarchy... Expanded...B07, sand-blasting Fulltext... Hierarchy... Expanded...B24C; the particular apparatus or device per se, e.g. brushes Fulltext... Hierarchy... Expanded...A46B, mops Fulltext... Hierarchy... Expanded...A47L, centrifuges Fulltext... Hierarchy... Expanded...B04, hand tools Fulltext... Hierarchy... Expanded...B25; the substance cleaned, e.g. metals Fulltext... Hierarchy... Expanded...B21C, Fulltext... Hierarchy... Expanded...C23, water Fulltext... Hierarchy... Expanded...C02, glass Fulltext... Hierarchy... Expanded...C03B, leather Fulltext... Hierarchy... Expanded...C14B, textile fibres Fulltext... Hierarchy... Expanded...D01; the substance removed (or prevented from depositing or forming), e.g. implements or apparatus for removing dry paint from surfaces Fulltext... Hierarchy... Expanded...B44D 3/16, chemical paint-removers Fulltext... Hierarchy... Expanded...C09D 9/00, preventing rust Fulltext... Hierarchy... Expanded...C23F; the substance used, e.g. macromolecular compounds or compositions Fulltext... Hierarchy... Expanded...C08, anti-icing materials Fulltext... Hierarchy... Expanded...C09K, detergents Fulltext... Hierarchy... Expanded...C11D; the operation in connection with which cleaning is done, e.g. metal rolling Fulltext... Hierarchy... Expanded...B21B, metal boring Fulltext... Hierarchy... Expanded...B23B, soldering Fulltext... Hierarchy... Expanded...B23K, textile fabrication Fulltext... Hierarchy... Expanded...D01G, Fulltext... Hierarchy... Expanded...D01H, Fulltext... Hierarchy... Expanded...D03J, Fulltext... Hierarchy... Expanded...D04B; the surroundings of a surface to be cleaned or kept clean, e.g. water in a boiler Fulltext... Hierarchy... Expanded...C02F, air in a room Fulltext... Hierarchy... Expanded...F24F. Inventions relating to processes using enzymes or micro-organisms in order to: liberate, separate or purify a pre-existing compound or composition, or to treat textiles or clean solid surfaces of materials are further classified in subclass Fulltext... Hierarchy... Expanded...C12S. [5]