1. CPC Sections
  2. CPC Section B
  3. CPC Class B27
  4. CPC Subclass B27B
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Version: 2025.01
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CPC
COOPERATIVE PATENT CLASSIFICATION
​
B27B
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) [2019-08]
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:
    B27B33/18 covered by B27B 5/12
  • 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.
B27B 1/00
Methods for subdividing trunks or logs essentially involving sawing [2025-01]
B27B 1/002
.
{by cross-cutting (saw benches with non-feedable circular saw blades for cross-cutting laterally fed workpieces B27B 5/228; cross-cutting reciprocating saws with power drive B27B 11/00)} [2013-01]
B27B 1/005
.
{including the step of dividing the log into sector-shaped segments} [2013-01]
B27B 1/007
.
{taking into account geometric properties of the trunks or logs to be sawn, e.g. curvature} [2013-01]
B27B 3/00
Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks [2013-01]
B27B 3/02
.
with vertically-reciprocating saw frame [2013-01]
B27B 3/04
. .
with multiple- blade saw frame [2013-01]
B27B 3/06
. .
with side blade saw frame [2013-01]
B27B 3/08
. . .
combined with multiple-blade saw frame [2013-01]
B27B 3/10
. .
Saw frames or guides therefor [2013-01]
B27B 3/12
. .
Mechanisms for producing the reciprocating movement of the saw frame; Arrangements for damping vibration; Arrangements for counter-balancing (B27B 3/26 takes precedence) [2013-01]
B27B 3/14
. .
Arrangements for raising or lowering the feed rollers [2013-01]
B27B 3/16
. .
Driving mechanisms for the feed rollers [2013-01]
B27B 3/18
. .
Controlling equipment, e.g. for controlling the drive [2013-01]
B27B 3/20
. .
Equipment for guiding the sawn part of timber during machining, e.g. preventing faults due to torsional stress [2013-01]
B27B 3/22
.
with horizontally-reciprocating saw frame [2013-01]
B27B 3/24
. .
Arrangements for raising and lowering the saw frame [2013-01]
B27B 3/26
. .
Mechanisms for producing the reciprocating movement of the saw frame; Arrangements for damping vibrations; Arrangements for counter-balancing [2013-01]
B27B 3/28
.
Components [2013-01]
B27B 3/30
. .
Blade attachments, e.g. saw buckles; Stretching devices [2013-01]
B27B 3/32
. . .
the stretching devices being equipped with screw-threaded or wedging means [2013-01]
B27B 3/34
. . .
the stretching devices being actuated by fluid pressure [2013-01]
B27B 3/36
. .
Devices for adjusting the mutual distance of the saw blades [2013-01]
B27B 3/38
. . .
Spacing bars; Spacing plates [2013-01]
B27B 3/40
. .
Devices for adjusting the overhang of the saw [2013-01]
Circular saws [2013-01]
B27B 5/00
Sawing machines working with circular {or cylindrical} saw blades (for length sawing of trunks B27B 7/00); Components or equipment therefor [2013-01]
B27B 5/02
.
characterised by a special purpose only [2013-01]
B27B 5/04
. .
for edge trimming {(equipment for adjusting the mutual distance between the saw blades B27B 5/34)} [2013-01]
B27B 5/06
. .
for dividing plates in parts of determined size, e.g. panels [2013-01]
B27B 5/061
. . .
{Devices having saws perpendicular to each other (B27B 5/075 takes precedence)} [2013-01]
B27B 5/063
. . .
{Sawing travelling workpieces} [2013-01]
B27B 5/065
. . .
with feedable saw blades, e.g. arranged on a carriage [2013-01]
B27B 5/07
. . . .
the plate being positioned in a substantially vertical plane (B27B 5/075 takes precedence) [2013-01]
B27B 5/075
. . . .
characterised by having a plurality of saw blades, e.g. turning about perpendicular axes [2013-01]
B27B 5/08
. .
for sawing with the saw blade abutting parallel against a surface of the workpiece [2013-01]
B27B 5/10
.
Wheeled circular saws; Circular saws designed to be attached to tractors or other vehicles and driven by same {(saw assemblies designed to be mounted on or driven by tractors B27B 11/12)} [2013-01]
B27B 5/12
.
Cylinder saws {(machine for producing flat surfaces by cutting through a workpiece with a tool having a rotational vector parallel to the surfaces generated by cutting B27C 1/007)} [2024-05]
B27B 5/14
.
Rim-driven circular saws [2013-01]
B27B 5/16
.
Saw benches (B27B 15/06 takes precedence) [2013-01]
B27B 5/165
. .
{Convertible sawing devices} [2013-01]
B27B 5/18
. .
with feedable circular saw blade, e.g. arranged on a carriage [2013-01]
B27B 5/181
. . .
{the saw blade being arranged underneath a work-table} [2013-01]
B27B 5/182
. . . .
{the saw blade performing a pivoting movement only} [2013-01]
B27B 5/184
. . . .
{the saw blade performing a rectilinear movement only} [2013-01]
B27B 5/185
. . .
{the saw blade being carried by a pivoted lever (B27B 5/181 and B27B 5/188 take precedence)} [2013-01]
B27B 5/187
. . .
{the saw blade being fitted on a movable carriage (B27B 5/181 takes precedence)} [2013-01]
B27B 5/188
. . .
{the saw blade being mounted on a hanging arm or at the end of a set of bars, e.g. parallelograms} [2013-01]
B27B 5/20
. . .
the saw blade being adjustable according to depth or angle of cut; Radial saws, i.e. sawing machines with a pivoted radial arm for guiding the movable carriage [2013-01]
B27B 5/201
. . . .
{Radial sawing machines; Machines having a saw blade on an extendable radial arm} [2013-01]
B27B 5/202
. . . .
{with the saw blade underneath a work-table} [2013-01]
B27B 5/203
. . . . .
{the saw blade performing a pivoting movement only} [2013-01]
B27B 5/205
. . . . .
{the saw blade performing a rectilinear movement only} [2013-01]
B27B 5/206
. . . .
{the saw blade being carried by a pivoted lever (B27B 5/208 takes precedence)} [2013-01]
B27B 5/207
. . . .
{the saw blade being fitted on a movable carriage} [2013-01]
B27B 5/208
. . . .
{the saw blade being mounted on a hanging arm or at the end of a set of bars, e.g. parallelograms} [2013-01]
B27B 5/22
. .
with non-feedable circular saw blade [2013-01]
B27B 5/222
. . .
{the saw blade being arranged underneath the work-table; Guiding arrangements for the work-table} [2013-01]
B27B 5/224
. . .
{the workpieces being fitted on a pivoting support} [2013-01]
B27B 5/226
. . .
{the workpieces being radially fed by means of a turning drum} [2013-01]
B27B 5/228
. . .
{Cross-cutting automatically laterally-fed travelling workpieces; Reducing lumber to desired lengths} [2013-01]
B27B 5/24
. . .
the saw blade being adjustable according to depth or angle of cut [2013-01]
B27B 5/243
. . . .
{the saw blade being arranged underneath the work-table (the circular saw blade arranged underneath a stationary work-table for sawing material in general B23D 45/06)} [2013-01]
B27B 5/246
. . . .
{End cutting of automatically laterally-fed travelling workpieces} [2013-01]
B27B 5/26
. . .
the table being adjustable according to depth or angle of cut [2013-01]
B27B 5/265
. . . .
{with the saw blade arranged underneath the work-table} [2013-01]
B27B 5/29
.
Details; Component parts; Accessories [2013-01]
B27B 5/30
. .
for mounting or securing saw blades or saw spindles [2013-01]
B27B 5/32
. . .
Devices for securing circular saw blades to the saw spindle [2013-01]
B27B 5/325
. . . .
{using fluid pressure means} [2013-01]
B27B 5/34
. . .
Devices for securing a plurality of circular saw blades on a single saw spindle; Equipment for adjusting the mutual distance {(arrangements for adjusting the mutual distances of circular saw machines for lengthwise sawing of trunks B27B 7/04)} [2013-01]
B27B 5/36
. . .
Mounting for swivelling or tilting the circular saw blade {, e.g. using an adjustable mounting (slotting or mortising machines B27F 5/02)} [2017-08]
​
B27B 5/38
. .
Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing {(vibration-damping of sawing machines or devices working with circular saw blades B23D 47/005)} [2024-05]
WARNING

​
B27B 5/381
. . .
{with at least one brake member contacting saw blade portions} [2024-05]
WARNING

B27B 7/00
Sawing machines working with circular saw blades, specially designed for length sawing of trunks [2013-01]
B27B 7/02
.
by making use of circular saws mounted substantially at right angles, e.g. vertically and horizontally [2013-01]
B27B 7/04
.
by making use of a plurality of circular saws mounted on a single spindle; Arrangements for adjusting the mutual distances {(equipment for adjusting the mutual distance of circular wood saws in general B27B 5/34)} [2013-01]
B27B 9/00
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) [2013-01]
B27B 9/02
.
Arrangements for adjusting the cutting depth or the amount of tilting [2013-01]
B27B 9/04
.
Guiding equipment, e.g. for cutting panels {(circular sawing machines for dividing plates in parts of determined size, e.g. panels B27B 5/06)} [2013-01]
B27B 11/00
Cross-cut reciprocating saws with power drive; Appurtenances therefor [2013-01]
B27B 11/02
.
Arrangements for guiding the saw blade [2013-01]
B27B 11/04
. .
Supports able to be attached to the work [2013-01]
B27B 11/06
.
Arrangements for chucking the saw blade, with or without releasable transmission mechanisms for uncoupling the drive [2013-01]
B27B 11/08
.
Frames, pillars, or beds [2013-01]
B27B 11/10
.
Devices for clamping the work or holding same in position [2013-01]
B27B 11/12
.
Saw assemblies designed to be mounted on or driven by tractors {(circular saws designed to be attached to tractors or other vehicles and driven by same B27B 5/10)} [2013-01]
Band or strap sawing machines [2013-01]
B27B 13/00
Band or strap sawing machines (for length cutting of trunks B27B 15/00); Components or equipment therefor [2013-01]
B27B 13/02
.
Frames; Pillars [2013-01]
B27B 13/04
.
Work-tables; Arrangements for tilting the band saw blade [2013-01]
B27B 13/06
.
Saw pulleys; Bearings therefor [2013-01]
B27B 13/08
.
Arrangements for stretching the band saw blade {(devices for tensioning strap saw blades of sawing machines B23D 55/10)} [2024-05]
B27B 13/10
.
Guiding equipment for the band saw blade, e.g. guide rollers, back guides, side guides {(devices for guiding or feeding strap saw blades to sawing machines B23D 55/08)} [2024-05]
B27B 13/12
.
Lubricating devices specially designed for band saw blades [2013-01]
​
B27B 13/14
.
Braking devices specially designed for band sawing machines, e.g. acting after damage of the band saw blade [2024-05]
WARNING

​
B27B 13/141
. .
{with at least one brake member contacting saw blade portions} [2024-05]
WARNING

B27B 13/16
.
Accessories, e.g. for cooling the saw blade [2013-01]
B27B 15/00
Band or strap sawing machines specially designed for length cutting of trunks [2013-01]
B27B 15/02
.
with horizontally-guided saw blade, i.e. horizontal log band saw [2013-01]
B27B 15/04
.
with vertically-guided saw blade [2013-01]
B27B 15/06
.
in combined arrangement with circular saws for performing simultaneously several sawing procedures [2013-01]
B27B 15/08
.
with a plurality of band saw blades [2013-01]
B27B 17/00
Chain saws; Equipment therefor {(slotting or mortising machines equipped with chain cutters B27F 5/06)} [2013-01]
B27B 17/0008
.
{Means for carrying the chain saw, e.g. handles (B27B 17/0033 takes precedence)} [2013-01]
B27B 17/0016
.
{Devices to adapt the chain saw for other purposes, e.g. drilling} [2013-01]
B27B 17/0025
.
{Length measuring devices incorporated in the chain saw} [2013-01]
B27B 17/0033
.
{Devices for attenuation of vibrations} [2013-01]
B27B 17/0041
.
{Saw benches or saw bucks} [2013-01]
B27B 17/005
. .
{with the saw mounted on a carriage} [2013-01]
B27B 17/0058
. .
{with the saw being pivotally mounted} [2013-01]
B27B 17/0066
. .
{with the saw mounted upright} [2013-01]
B27B 17/0075
. .
{the workpiece being held in a cantilever manner} [2013-01]
B27B 17/0083
.
{Attachments for guiding or supporting chain saws during operation} [2013-01]
B27B 17/0091
.
{Wheeled chain saws; Chain saws mounted on or driven by vehicles, e.g. for sawing trees in situ} [2013-01]
B27B 17/02
.
Chain saws equipped with guide bar (B27B 17/06 takes precedence) [2013-01]
B27B 17/025
. .
{Composite guide bars, e.g. laminated, multisectioned; Guide bars of diverse material} [2013-01]
B27B 17/04
. .
Roller bearing guides [2013-01]
B27B 17/06
.
Chain saws mounted on a bow [2013-01]
B27B 17/08
.
Drives or gearings; Devices for swivelling or tilting the chain saw [2013-01]
B27B 17/083
. .
{Devices for arresting movement of the saw chain} [2013-01]
B27B 17/086
. .
{Angle drives} [2013-01]
B27B 17/10
. .
Transmission clutches specially designed for chain saws [2013-01]
B27B 17/12
.
Lubricating devices specially designed for chain saws [2013-01]
​
B27B 17/14
.
Arrangements for stretching the chain saw [2024-05]
WARNING

​
B27B 17/142
. .
{with adjustment by at least one cam} [2024-05]
WARNING

​
B27B 17/144
. .
{with adjustment by at least one threaded screw} [2024-05]
WARNING

​
B27B 17/146
. .
{with adjustment of a non-driven sprocket or pulley relative to the guide bar} [2024-05]
WARNING

B27B 19/00
Other reciprocating saws with power drive; Fret-saws [2013-01]
B27B 19/002
.
{Power-driven hand saws} [2013-01]
B27B 19/004
. .
{in which the saw blade is chucked at both ends} [2013-01]
B27B 19/006
.
{with oscillating saw blades; Hand saws with oscillating saw blades} [2013-01]
B27B 19/008
. .
{having a plurality of saw blades or saw blades having plural cutting zones} [2013-01]
B27B 19/02
.
Saws with a power- driven blade chucked at both ends or at one end only, e.g. jig saws, scroll saws (B27B 19/10 takes precedence) [2013-01]
B27B 19/04
. .
characterised by power drive, e.g. by electromagnetic drive [2013-01]
B27B 19/06
. .
Stationary machines [2013-01]
B27B 19/065
. . .
{hand-operated or foot-operated} [2013-01]
B27B 19/09
. .
portable [2013-01]
B27B 19/10
.
Fret-saws, i.e. with bilaterally chucked saw blade in a manually-guided bow [2013-01]
B27B 19/12
. .
with power drive [2013-01]
B27B 19/14
. .
with hand drive [2013-01]
B27B 21/00
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)} [2013-01]
B27B 21/02
.
Buck or hack saws [2013-01]
B27B 21/04
.
Cross-cut saws; Pad saws [2013-01]
B27B 21/06
.
Arrangements for stretching the saw blade [2013-01]
B27B 21/08
.
Arrangements of gauging or adjusting equipment on hand saws, e.g. for limiting the cutting depth [2013-01]
B27B 23/00
Other cutting of wood by non-rotary toothed tools; Tools therefor (cutting with hot wire B27M 1/06) [2013-01]
Components or accessories for saws [2013-01]
B27B 25/00
Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees ({B27B 29/00}, B27B 31/00 take precedence) [2013-01]
B27B 25/02
.
with feed and pressure rollers [2013-01]
B27B 25/04
.
with feed chains or belts [2013-01]
B27B 25/06
.
Resilient feeding or pressing accessories, e.g. pads, springs [2013-01]
B27B 25/08
.
Feeding devices able to be attached to any sawing machine [2013-01]
B27B 25/10
.
Manually-operated feeding or pressing accessories, e.g. pushers [2013-01]
B27B 27/00
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) [2013-01]
B27B 27/02
.
arranged laterally and parallel with respect to the plane of the saw blade [2013-01]
B27B 27/04
.
arranged perpendicularly to the plane of the saw blade [2013-01]
B27B 27/06
.
arranged angularly with respect to the plane of the saw blade, e.g. for mitring {(devices for mitring wood B27G 5/00)} [2013-01]
B27B 27/08
.
arranged adjustably, not limited to only one of the groups B27B 27/02 - B27B 27/06 [2016-05]
B27B 27/10
.
Devices for moving or adjusting the guide fences or stops [2013-01]
B27B 29/00
Gripping, clamping or holding devices for the trunk or log in saw mills or sawing 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)} [2025-01]
B27B 29/02
.
Clamping angles; Gripping equipment thereon [2013-01]
B27B 29/04
.
Trunk or log carriages with gripping means which do not pass the saw blade(s), specially for gang saws; Arrangement of gripping accessories thereon [2013-01]
B27B 29/06
. .
Auxiliary trunk or log carriages for carrying initially the log to the feed rollers or for carrying the sawn part of the log [2013-01]
B27B 29/08
.
Trunk or log carriages with gripping means designed to pass the saw blade(s), especially for band saws; Arrangement of gripping accessories thereon; Turning devices thereon [2013-01]
B27B 29/085
. .
{Turning devices thereon} [2013-01]
B27B 29/10
. .
Assemblies for laterally adjusting or controlling the clamping or turning devices with respect to the thickness of the board to be sawn [2013-01]
B27B 31/00
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}) [2017-08]
B27B 31/003
.
{with rollers} [2013-01]
B27B 31/006
.
{with chains or belts} [2013-01]
B27B 31/02
.
Loading equipment for travelling carriages [2013-01]
B27B 31/04
.
Turning equipment {(turning devices on trunk or log carriages B27B 29/08)} [2013-01]
B27B 31/06
.
Adjusting equipment, e.g. using optical projection {(see also B27L 5/022)} [2013-01]
B27B 31/08
.
Discharging equipment [2013-01]
B27B 33/00
Sawing tools for saw mills, sawing machines, or sawing devices [2013-01]
B27B 33/02
.
Structural design of saw blades or saw teeth [2013-01]
B27B 33/04
. .
Gang saw blades [2013-01]
B27B 33/06
. .
Band saw blades [2013-01]
B27B 33/08
. .
Circular saw blades [2013-01]
B27B 33/10
. .
Hand saw blades [2013-01]
B27B 33/12
. .
Saw blades having inserted or exchangeably arranged bits or toothed segments [2013-01]
B27B 33/14
.
Saw chains {(saw chains for slotting or mortising devices B27F 5/08)} [2013-01]
B27B 33/141
. .
{with means to control the depth of cut} [2013-01]
B27B 33/142
. .
{Cutter elements} [2013-01]
B27B 33/144
. . .
{having cutting inserts or exchangeable cutting teeth} [2013-01]
B27B 33/145
. . .
{having plural teeth on a single link} [2013-01]
B27B 33/147
. .
{with incorporated lubricating means} [2013-01]
B27B 33/148
. .
{with means permitting replacement of cutter elements} [2013-01]
B27B 33/16
.
Saw wires; Twisted saw strips [2013-01]
B27B 33/20
.
Edge trimming saw blades or tools combined with means to disintegrate waste [2013-01]