|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

|  | B01 - B07 |
Subsection index
LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION |
Method |
General operations | B01D
by centrifugal force, using centrifuges or free-vortex apparatus | B01D
using magnetic or electrostatic effect | B03C
Apparatus |
General operations | B01D
by centrifugal force, using centrifuges or free-vortex apparatus | B04B, B04C
using magnetic or electrostatic effect | B03C
SOLID/LIQUID OR SOLID/GAS SEPARATION |
Method |
General operations | B01D
by centrifugal force | B01D
using centrifuges or free-vortex apparatus | B01D
using magnetic or electrostatic effect | B03C
Apparatus |
General operations | B01D
by centrifugal force | B01D
using centrifuges or free-vortex apparatus | B04B, B04C
using magnetic or electrostatic effect | B03C
SOLID/SOLID SEPARATION |
Method |
Dry methods |
material in bulk | B07B
Individual sorting | B07C
Screening, sifting, pneumatic sorting | B07B
using pneumatic tables or jigs | B03B
by magnetic or electrostatic effect | B03C
by centrifugal force | B07B
using centrifuges or free-vortex apparatus | B07B
Wet methods |
General operations | B03B
flotation, differential sedimentation | B03D
screening | B07B
Combinations Dry methods - wet methods | B03B
Apparatus |
Dry methods |
material in bulk | B07B
Individual sorting | B07C
Screening, sifting, pneumatic sorting | B07B
using pneumatic tables or jigs | B03B
by magnetic or electrostatic effect | B03C
by centrifugal force | B07B
using centrifuges or free-vortex apparatus | B04B, B04C
Wet methods |
General operations | B03B
flotation, differential sedimentation | B03D
screening | B07B
Combinations Dry methods - wet methods | B03B

SHAPING

|  | B27 |
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL

|  | B27B |
SAWS; COMPONENTS OR ACCESSORIES THEREFOR (saws specially adapted for pruning or debranching Fulltext... Hierarchy... Expanded...A01G 3/08; sawing apparatus specially adapted for felling trees Fulltext... Hierarchy... Expanded...A01G 23/091; features not restricted to a particular type of wood saw Fulltext... Hierarchy... Expanded...B23D, e.g. attaching saw blades Fulltext... Hierarchy... Expanded...B23D 51/00; machine tool frames, beds, pillars or like members, in general Fulltext... Hierarchy... Expanded...B23Q 1/01) [5]

|  | B27B |
Subclass index
SAWS CHARACTERISED BY THE ACTIVE ELEMENT |
Reciprocating | 3/00, 11/00, 19/00
Circular | 5/00, 7/00, 9/00
Band or strap | 13/00, 15/00
Chain | 17/00
Other kinds | 23/00
PORTABLE OR HAND SAWS | 9/00, 21/00
ACTIVE ELEMENTS | 23/00, 33/00
ACCESSORIES | 25/00 - 31/00
SAWING TRUNKS OR LOGS, SAWS SPECIALLY ADAPTED THEREFOR | 1/00, 3/00, 7/00, 15/00

|  | B27C |
PLANING, DRILLING, MILLING, TURNING, OR UNIVERSAL MACHINES (machine tools in general Fulltext... Hierarchy... Expanded...B23; working wood using abrasive, e.g. sanding, devices Fulltext... Hierarchy... Expanded...B24; tools for these purposes Fulltext... Hierarchy... Expanded...B27G)

|  | B27D |
WORKING VENEER OR PLYWOOD (applying liquids or other fluent materials to surfaces in general Fulltext... Hierarchy... Expanded...B05; grinding, sanding, or polishing of wood Fulltext... Hierarchy... Expanded...B24; applying adhesives or glue to surfaces of wood Fulltext... Hierarchy... Expanded...B27G 11/00; manufacture of veneer Fulltext... Hierarchy... Expanded...B27L 5/00)

|  | B27D |
Note(s) The layered products classified in this subclass are also classified in Fulltext... Hierarchy... Expanded...B32B. [3]

|  | B27F |
DOVETAILED WORK; TENONS; SLOTTING MACHINES; NAILING OR STAPLING MACHINES (hand-held nailing or stapling tools Fulltext... Hierarchy... Expanded...B25C; manufacture of cases, trunks or boxes from wood Fulltext... Hierarchy... Expanded...B27M 3/34; connections for building structures in general, e.g. dowels for use in building constructions Fulltext... Hierarchy... Expanded...E04B 1/38; jointing elements in general, e.g. dowels in general, Fulltext... Hierarchy... Expanded...F16B)

|  | B27F |
Note(s) This subclass covers also the assembling of the elements to be jointed, e.g. using adhesives. This subclass does not cover the application of adhesives or glue to surfaces of wood to be jointed, which is covered by group Fulltext... Hierarchy... Expanded...B27G 11/00.

|  | B27G |
ACCESSORY MACHINES OR APPARATUS; TOOLS; SAFETY DEVICES, e.g. FOR SAWS (clamping devices for mitre joints, presses for producing frames, press frames, or cages equipped with clamping devices Fulltext... Hierarchy... Expanded...B25B; woodworkers' benches Fulltext... Hierarchy... Expanded...B25H)

|  | B27G |
Subclass index
DEVICES OR MACHINES FOR REMOVING KNOTS OR OTHER UNUSABLE PARTS | 1/00, 3/00
DEVICES OR MACHINES FOR WORKING MITRE JOINTS OR FOR GLUING | 5/00, 11/00
TOOLS | 13/00, 15/00, 17/00
DEVICES FOR SAFETY OR PROPER OPERATION | 19/00, 21/00, 23/00

|  | B27H |
BENDING; COOPERAGE; WHEEL-MAKING

|  | B27J |
MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS

|  | B27J |
Note(s) In this subclass, the following expression is used with the meaning indicated: "working of cane" embraces the working of other materials, e.g. of strips of wood or plastics, in the same manner.

|  | B27K |
PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR (applying liquids or other fluent materials to surfaces in general Fulltext... Hierarchy... Expanded...B05; coating wood or similar material Fulltext... Hierarchy... Expanded...B44D); CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS [2]

|  | B27L |
REMOVING BARK OR VESTIGES OF BRANCHES (forestry Fulltext... Hierarchy... Expanded...A01G); SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER

|  | B27M |
WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B27B-B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES

|  | B27N |
MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL (containing cementitious material Fulltext... Hierarchy... Expanded...B28B; shaping of substances in a plastic state Fulltext... Hierarchy... Expanded...B29C; fibreboards made from fibrous suspensions Fulltext... Hierarchy... Expanded...D21J; drying Fulltext... Hierarchy... Expanded...F26B 17/00) [4]

|  | B27N |
Note(s) This subclass does not cover treatment of compositions which are in a plastic state, or worked by the same type of process or apparatus as plastics, which is covered by subclass Fulltext... Hierarchy... Expanded...B29B or Fulltext... Hierarchy... Expanded...B29C. [4]