Cooperative Patent Classification

CPC Definition - Subclass B27C

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Last Updated Version: 2016.11
PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL (machine tools in general B23; working wood using abrasive, e.g. sanding, devices B24; tools for these purposes B27G)
Definition statement

This place covers:

Planing, drilling, milling, turning (Wood-turning devices for reducing sticks of wood to a desired form by means of rotary or non-rotary cutters brought into engagement with the circumference of the continuously-rotating stick or by means of rotary or non-rotary cutters revolving circumferentially around and in engagement with the stick or that portion of the stick to be reduced), universal machines

References
Informative references

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

Machine tools in general

Working wood using abrasive, e.g. sanding, devices

Tools for these purposes

Machines for producing flat surfaces, e.g. by rotary cutters; Equipment therefor
Definition statement

This place covers:

knives or blades for planers and jointers B27C 1/00

Woodworking machines used to produce a flat surface along a board's length (jointer or planer)

with rotating or non-rotating tools

with tools having a rotational vector which is perpendicular to the working surface B27C 1/005

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  • For cutting through a work-piece with a tool having a rotational vector which is parallel to the surfaces generated by cutting B27C 1/007
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  • Smoothing, i.e. working one side only B27C 1/02
  • Thicknessing machines B27C 1/04
  • Machines for smoothing and subsequent thicknessing B27C 1/06
  • Machines for working several sides of work simultaneously B27C 1/08
  • Hand planes equipped with power-driven cutter blocks B27C 1/10
  • Arrangements for feeding work B27C 1/12
  • Other details or accessories B27C 1/14
References
Informative references

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

Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor

Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools

Cutter blocks; Other rotary cutting tools

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "jointer", "planer", "surface planer", "buzzer" and "flat top"
Drilling machines or drilling devices; Equipment therefor (B23B takes precedence)
References
Informative references

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

General-purpose boring or drilling machines or devices

Drill jigs

Special rules of classification

B23B takes precedence

Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor (turning B27C 7/00; features of copying devices B23Q 35/00; slotting, mortising, making tongues or grooves B27F)
References
Limiting references

This place does not cover:

Turning

Features of copying devices

Slotting, mortising, making tongues or grooves

Wood-turning machines; Equipment therefor (B23B, B23G, B23Q, take precedence; features of copying devices B23Q 35/00)
Definition statement

This place covers:

Wood-turning machines are devices for reducing sticks of wood to a desired form by means of rotary or non-rotary cutters brought into engagement with the circumference of the continuously-rotating stick or by means of rotary or non-rotary cutters revolving circumferentially around and in engagement with the stick or that portion of the stick to be reduced.

References
Informative references

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

Features of copying devices

Multi-purpose machines; Universal machines; Equipment therefor
Definition statement

This place covers:

Machines that are useful for many purposes, e.g., convertible machines (machines that cannot be defined by the tool used if they have one or more spindles in which tools of different categories can be inserted, i.e drill or mill or saw etc., thus designed for performing more than one operation) and machines which carry out multiple operations whether the same or different.

References
Informative references

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

Machines designed for producing special profiles or shaped work, e.g. by rotary cutters

Slotting, mortising, making tongues or grooves

Multi-step processes