Cooperative Patent Classification

CPC Definition - Subclass B27B

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Last Updated Version: 2016.11
SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR (saws specially adapted for pruning or debranching A01G 3/08; sawing apparatus specially adapted for felling trees A01G 23/091; features not restricted to a particular type of wood saw B23D, e.g. attaching saw blades B23D 51/00; machine tool frames, beds, pillars or like members, in general B23Q 1/01)
Definition statement

This place covers:

Saws for sawing wood:

- Wood saws characterised by the active element:

- Portable or hand saws for wood: B27B 9/00, B27B 21/00

- Active elements of wood saws: B27B 23/00, B27B 33/00

- Accessories for wood saws: B27B 25/00, B27B 31/00

- Sawing trunks or logs, saws specially adapted therefor: B27B 1/00, B27B 3/00, B27B 7/00, B27B 15/00

Relationships with other classification places

Other large areas covering sawing are B23D 45/00-B23D 65/00 (sawing in general, sawing metal) and B28D 1/02 (sawing stone). B23D is the main entry for sawing. Precedence is given to B23D. Features not restricted to a particular type of saw are classified in B23D. However, such features are classified in B27B if a more specific entry exists in B27B, for example:

  • B27B 5/30: mounting/securing devices for circular saw blades or spindles
  • B27B 5/38: braking devices for the circular saw blade or the spindle
  • B27B 17/00: details of chain saws, equipment for chain saws
  • B27B 27/00: guide fences or stops
  • B27B 33/14: saw chains
References
Limiting references

This place does not cover:

Sawing in general (unless a more specific entry exists in B27B)

Constructional features of particular parts per se of sawing machines or sawing devices

Details or components, e.g. casings, bodies, of portable power-driven saws not particularly related to the operation performed

Safety guards or devices specially designed for wood saws

Sawing stone or stone-like materials

Accessories specially adapted for use with machines for sawing of gems, jewels, crystals

Sawing gems, jewels, crystals with discs or wheels

Sawing gems, jewels, crystals with blades or wires

Accessories specially adapted for use with machines or devices for sawing stone

Informative references

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

Saws specially adapted for pruning or debranching

Sawing apparatus specially adapted for felling trees

Meat or bone saws

Surgical saws

Saws for dentistry

Grinders for cutting-off

Auxiliary devices facilitating proper operation of wood saws

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Feeding work

moving a workpiece into engagement with a saw blade while sawing

Conveying or transporting work

moving a workpiece before, after or between sawing operations

Discharging work

moving a workpiece away from a saw blade after sawing

Methods for subdividing trunks or logs essentially involving sawing (features of machines used, see the relevant groups for the machines)
References
Limiting references

This place does not cover:

Saw benches with non-feedable circular saw blades for cross-cutting laterally fed workpieces

Cross-cutting reciprocating saws with power drive

Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
Definition statement

This place covers:

Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks

Sawing machines working with circular {or cylindrical} saw blades (for length sawing of trunks B27B 7/00); Components or equipment therefor
References
Limiting references

This place does not cover:

Sawing machines working with circular saw blades for length sawing of trunks

Arrangements for adjusting the mutual distances of circular saw machines for lengthwise sawing of trunks

Circular saws combined with band or strap sawing machines specially designed for length cutting of trunks

Machines for cutting through a work-piece with a tool having a rotational vector which is parallel to the surfaces generated by cutting

Slotting or mortising machines

Sawing machines working with circular saw blades, specially designed for length sawing of trunks
References
Limiting references

This place does not cover:

Equipment for adjusting the mutual distance of circular wood saws in general

Portable power-driven circular saws for manual operation (details or components, e.g. handles, casings, of portable power-driven tools not particularly related to the operation performed B25F 5/00)
References
Limiting references

This place does not cover:

Circular sawing machines for dividing plates in parts of determined size, e.g. panels

Details or components, e.g. casings, bodies, of portable power-driven saws not particularly related to the operation performed

Cross-cut reciprocating saws with power drive; Appurtenances therefor
Definition statement

This place covers:

Saws with straight reciprocating saw blades.

Band or strap sawing machines (for length cutting of trunks B27B 15/00); Components or equipment therefor
References
Limiting references

This place does not cover:

Band or strap sawing machines specially designed for length cutting of trunks

Devices for guiding strap saw blades in general

Devices for tensioning strap saw blades in general

Band or strap sawing machines specially designed for length cutting of trunks
Definition statement

This place covers:

Band or strap sawing machines specially designed for length cutting of trunks

Chain saws; Equipment therefor {(slotting or mortising machines equipped with chain cutters B27F 5/06)}
References
Limiting references

This place does not cover:

Slotting or mortising machines equipped with chain cutters

Other reciprocating saws with power drive; Fret-saws
Definition statement

This place covers:

Saws with oscillating saw blades

Hand saws without power drive ({hand saws with oscillating saw blades,} B27B 19/14 takes precedence); Equipment for hand sawing, e.g. saw horses {(work benches B25H 1/00; saw guides B27B 11/02)}
References
Limiting references

This place does not cover:

Saw guides

Saws benches or saw bucks for chain saws

Fret saws with hand drive

Work benches, horses in general

Other cutting of wood by non-rotary toothed tools; Tools therefor (cutting with hot wire B27M 1/06)
References
Limiting references

This place does not cover:

Cutting with hot wire

Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees ({B27B 29/00}, B27B 31/00 take precedence)
References
Limiting references

This place does not cover:

Gripping, clamping, or holding devices for the trunk or log in saw mills or sawing machines; travelling trunk or log carriages

Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines

Guide fences or stops for timber in saw mills or sawing machines; Measuring equipment thereon (safety guards or devices specially designed for wood saws B27G 19/00; constructional features of measuring devices G01B)
References
Limiting references

This place does not cover:

Devices for mitring wood

Safety guards or devices specially designed for wood saws

Constructional features of measuring devices

Gripping, clamping, or holding devices for the trunk or log in saw mills or sawing machines (for other timber, see the relevant groups for the machines; safety guards or devices specially designed for wood saws B27G 19/00); Travelling trunk or log carriages {(for logs being held in a cantilever manner B27B 17/0075)}
References
Limiting references

This place does not cover:

Travelling trunk or log carriages for logs being held in a cantilever manner

Gripping, clamping, or holding devices, travelling carriages for other timber

Safety guards or devices specially designed for wood saws

Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines (B27B 29/00 takes precedence; {arrangements for raising or lowering the feed rollers of gang saw mills B27B 3/14; driving mechanisms for the feed rollers of gang saw mills B27B 3/16})
References
Limiting references

This place does not cover:

Arrangements for raising or lowering the feed rollers of gang saw mills

Driving mechanisms for the feed rollers of gang saw mills

Gripping, clamping, or holding devices for the trunk or log in saw mills or sawing machines; travelling trunk or log carriages

Article or material handling devices associated with conveyors

Informative references

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

Devices for determining the axis of a trunk

Sawing tools for saw mills, sawing machines, or sawing devices
References
Limiting references

This place does not cover:

Saw chains for slotting or mortising devices