Cooperative Patent Classification

CPC Definition - Subclass B27M

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Last Updated Version: 2016.11
WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
Definition statement

This place covers:

Stretching wood, breaking or snapping wood, stress relief, cutting and slicing (machines for cutting up wood by knife action without following the grain).

Relationships with other classification places

This group is for the classification of woodworking techniques/treatments/machines not already provided for in subclasses B27B - B27L.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Solid material comminution or disintegration, for apparatuses for reducing wood to non-shaped particles

Riving blades

{Mechanical surface treatment}
Definition statement

This place covers:

Mechanical surface treatment including cutting or shaping particularly of plural discrete diverse cutting operations, the operations including slicing, slitting, chipping, planing sanding etc. Particularly for producing an aged or antique look to the worked surface.

{for preparation of impregnation by deep incising}
Definition statement

This place covers:

Machines for preparatory processing by incisions in wood prior to impregnation, includes log punching (machines intended to pierce radially through a log).

by compressing
Definition statement

This place covers:

Shaping by applying pressure.

by punching out
Definition statement

This place covers:

Machines including a cutter for cutting out pieces or simply cutting holes by mere punching action.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

For punching out defects.

by burning or charring, e.g. cutting with hot wire (as surface treatment B44B {cutting synthetic materials with heated tools B26F 3/06 - B26F 3/12})
Definition statement

This place covers:

Processes including applying heat to the tool or wooden part.

References
Limiting references

This place does not cover:

Cutting synthetic materials with heating tools

As surface treatment

by multi-step processes
Definition statement

This place covers:

Machines for carrying out a number of different machining steps, usually taking place in sequence along a workpiece or machine tool transfer direction.

Machines including a first structure for performing an operation of this class on a workpiece and including a second structure for performing a second, distinct, operation on the same or a second workpiece.

Manufacture or reconditioning of specific semi-finished or finished articles (features of copying devices B23Q; manufacture of plywood or veneer, shaping plywood or veneer into articles B27D; of central layers for plywood B27D 1/06; nailing or stapling machines in general B27F 7/00; of elements for cooperage or wheel making B27H {presses therefor B27D 3/00})
References
Limiting references

This place does not cover:

Features of copying devices

Manufacture of plywood or veneer, shaping plywood or veneer into articles

Of central layers for plywood

Presses therefor

Nailing or stapling machines in general

Of elements for cooperage or wheel making

{of composite or compound articles (working veneer or plywood B27D)}
Definition statement

This place covers:

The manufacture of assembled wooden elements (side by side, end to end or both, corner jointing etc.) Products per se are in the product groups where they exist.

References
Limiting references

This place does not cover:

Working veneer or plywood

of furniture {or of doors (B27D 5/003 takes precedence)}
Definition statement

This place covers:

The manufacture of assembled wooden elements to form furniture, doors, window frames, blinds, sills or drawers. Furniture or frame presses (frame presses also in B27M 3/0013). Products per se are in the product groups.

Relationships with other classification places

For the classification of doors, B27D 5/003 takes precedence.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Frame presses

Clamps for window frames