CPC Scheme - B27G ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS ; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS

Version: 2025.05

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CPC

COOPERATIVE PATENT CLASSIFICATION

B27G

ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS (tools for grinding B24D; sawing tools B27B 33/00; tools for slotting or mortising machines B27F 5/02; tools for the manufacture of wood shavings, chips, powder or the like B27L 11/00); SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS [2024-05]

WARNINGS

The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups:
B27G17/08 covered by B25D 3/00
{In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.}

B27G 1/00

Machines or devices for removing knots or other irregularities or for filling-up holes {(filling up cracks or holes in a veneer cutting block B27L 5/00; caulking decks B63B 5/065)} [2013-01]

B27G 3/00

Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants {(B23Q 11/0042 takes precedence)} [2013-01]

B27G 5/00

Machines or devices for working mitre joints with even abutting ends [2018-08]

B27G 5/02

for sawing mitre joints; Mitre boxes (guide fences for timber in sawing machines B27B 27/00) [2024-05]

B27G 5/023

. .

{the mitre angle being adjusted by positioning a workpiece relative to a fixed saw} [2013-01]

B27G 5/026

. .

{Mitre boxes} [2013-01]

B27G 5/04

for planing, cutting, shearing, or milling mitre joints [2013-01]

B27G 11/00

Applying adhesives or glue to surfaces of wood to be joined [2018-08]

B27G 11/005

{Glue guns, glue sprayers} [2013-01]

B27G 11/02

Glue vessels; Apparatus for warming or heating glue [2013-01]

Tools (sawing tools B27B 33/00; tools for slotting or mortising machines B27F 5/00; tools for the manufacture of wood shavings, chips, powder, or the like B27L 11/00) [2013-01]

B27G 13/00

Cutter blocks; Other rotary cutting tools (B27G 15/00, B27G 17/00 take precedence) [2013-01]

B27G 13/002

{Rotary tools without insertable or exchangeable parts, except the chucking part} [2013-01]

B27G 13/005

{Tools composed of two or more rotating discs} [2013-01]

B27G 13/007

. .

{which are adjustable relatively to each other (B23Q 17/2283 takes precedence)} [2013-01]

B27G 13/02

in the shape of long arbors, i.e. cylinder cutting blocks (B27G 13/12 takes precedence) [2013-01]

B27G 13/04

. .

Securing the cutters by mechanical clamping means [2013-01]

B27G 13/06

. .

Securing the cutters by fluid-pressure clamping means [2013-01]

B27G 13/08

in the shape of disc-like members; Wood-milling cutters (B27G 13/12 takes precedence) [2013-01]

B27G 13/10

. .

Securing the cutters, e.g. by clamping collars [2013-01]

B27G 13/12

for profile cutting [2013-01]

B27G 13/14

. .

for cutting grooves or tenons [2013-01]

B27G 13/16

. .

for rounding rods, e.g. dowels [2013-01]

B27G 15/00

Boring or turning tools; Augers [2013-01]

B27G 15/02

Drills for undercutting holes [2013-01]

B27G 17/00

Manually-operated tools [2013-01]

B27G 17/02

Hand planes [2018-08]

B27G 17/025

. .

{for forming profiles on wood; for trimming or chamfering edges} [2013-01]

B27G 17/04

Spokeshaves; Scrapers [2013-01]

B27G 17/06

Rasps [2013-01]

B27G 19/00

Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws [2024-05]

WARNING

Group B27G 19/00 is impacted by reclassification into group B27G 19/008.
Groups B27G 19/00 and B27G 19/008 should be considered in order to perform a complete search.

B27G 19/003

{for chain saws (braking devices B27B 17/08)} [2013-01]

B27G 19/006

{for reciprocating saws} [2013-01]

B27G 19/008

{with sensing of human contact or proximity with the blade} [2024-05]

WARNING

Group B27G 19/008 is incomplete pending reclassification of documents from groups B27B 5/38, B27B 13/14, B27G 19/00, B27G 19/02 and B27G 19/06.
All groups listed in this Warning should be considered in order to perform a complete search.

B27G 19/02

for circular saws [2024-05]

WARNING

Group B27G 19/02 is impacted by reclassification into groups B27G 19/008, B27G 19/022, B27G 19/025 and B27G 19/028.
All groups listed in this Warning should be considered in order to perform a complete search.

B27G 19/022

. .

{with blades dropping below a table in reaction to dangerous situation} [2024-05]

WARNING

Group B27G 19/022 is incomplete pending reclassification of documents from groups B27B 5/38 and B27G 19/02.
Groups B27B 5/38, B27G 19/02 and B27G 19/022 should be considered in order to perform a complete search.

B27G 19/025

. .

{with guards for tool} [2024-05]

WARNING

Group B27G 19/025 is incomplete pending reclassification of documents from group B27G 19/02.
Groups B27G 19/02 and B27G 19/025 should be considered in order to perform a complete search.

B27G 19/028

. .

{Anti-kickback pawls} [2024-05]

WARNING

Group B27G 19/028 is incomplete pending reclassification of documents from group B27G 19/02.
Groups B27G 19/02 and B27G 19/028 should be considered in order to perform a complete search.

B27G 19/04

. .

for manually-operated power-driven circular saws [2013-01]

B27G 19/06

for band or strap saws [2024-05]

WARNING

Group B27G 19/06 is impacted by reclassification into group B27G 19/008.
Groups B27G 19/06 and B27G 19/008 should be considered in order to perform a complete search.

B27G 19/08

Accessories for keeping open the saw kerf, e.g. riving knives or wedge plates [2018-08]

B27G 19/10

Measures preventing splintering of sawn portions of wood [2013-01]

B27G 21/00

Safety guards or devices specially designed for other wood-working machines {auxiliary devices facilitating proper operation of said wood-working machines} [2013-01]

B27G 23/00

Gauging means specially designed for adjusting of tools or guides, e.g. adjusting cutting blades in cutter blocks ({arrangements for indicating or measuring existing or desired position of tool B23Q 17/22;} for arrangement on manually operated saws B27B 21/08; for guides of sawing machines B27B 27/00) [2024-05]

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