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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
NOTE
-
This subclass does not cover non-mechanical operations on non-metallic materials unless such operations are specially mentioned in this subclass.

In this subclass, the following expressions are used with the meanings indicated:
"combined operations" excludes the assembling of parts if it is an essential feature of the next metal-working operation, since it is not regarded as an operation per se.

"working of metal" and equivalent expressions include non-mechanical treatment of metal so far as it is not provided for in any other class or subclass, for example in C21D, C22C, C22F, C23. Thus, combinations of such non-mechanical treatment with other metal-working are classified in this subclass.


Attention is drawn to the Notes following the title of class B23.

Setting gems or the like on metal parts, e.g. diamonds on tools
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Restoring or reconditioning objects (straightening or restoring form of sheet metal, metal rods, metal tubes, metal profiles, or specific articles made therefrom B21D 1/00, B21D 3/00; repairing defective or damaged objects by casting techniques B22D 19/10; procedures or apparatus covered by a single other subclass, see the relevant subclass)
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.
{
Repairing turbine components, e.g. moving or stationary blades, rotors, (B23P 6/045 takes precedence)
}
B23P 6/005
. .
{
using only replacement pieces of a particular form
}
B23P 6/007
. .
{
using only additive methods, e.g. build-up welding
}
B23P 6/02
.
Pistons or cylinders
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.
Repairing fractures or cracked metal parts or products, e.g. castings
. .
{
of turbine components, e.g. moving or stationary blades, rotors, etc.
}
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Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings (treatment covered by a single other subclass, see the relevant subclass, e.g. B24C, C21D 7/00, C22F 1/00); Features of such surfaces not otherwise provided for, their treatment being unspecified
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.
Treating or finishing by applying pressure, e.g. knurling (B23P 9/04 takes precedence)
. .
{
to inner walls of holes by using axially moving tools
}
.
Treating or finishing by hammering or applying repeated pressure
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Connecting metal parts or objects by metal-working techniques, not covered wholly by either B21J or B23K(connecting sheet metal or metal tubes, rods, or profiles B21D 39/00;
{
objects produced by methods not important per se, see the relevant subclasses dealing with the objects, e.g. B21F 15/00; B21L 19/00
}
; hand tools for connecting wire or strip B25B 25/00; connecting metal parts by adhesives F16B 11/00)
B23P 11/005
.
{
by expanding or crimping
}
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B23P 11/02
.
by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
B23P 11/022
. .
{
by using pressure fluids
}
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B23P 11/025
. .
{
by using heat or cold
}
. . .
{
for mounting tools in tool holders
}
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B23P 13/00
Making metal objects by operations essentially involving machining but not covered by a single other subclass (making specific objects B23P 15/00)
B23P 13/02
.
in which only the machining operations are important
B23P 13/04
.
involving slicing of profiled material
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Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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B23P 15/001
.
{
valves or valve housings (welding B23K; valve housings per se F16K)
}
B23P 15/002
. .
{
poppet valves
}
B23P 15/003
.
{
bearings (see also F16C 33/00)
}
B23P 15/005
.
{
keys (making keys without essentially removing material, e.g. by punching B21D 53/42; milling grooves in keys B23C 3/35)
}
B23P 15/006
.
{
turbine wheels
}
B23P 15/007
.
{
injection moulding tools
}
B23P 15/008
.
{
Rocket engine parts, e.g. nozzles, combustion chambers
}
B23P 15/02
.
turbine or like blades from one piece
B23P 15/04
.
turbine or like blades from several pieces
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B23P 15/06
.
piston rings from one piece
B23P 15/065
. .
{
from metal strip
}
B23P 15/08
.
piston rings from several pieces
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B23P 15/10
.
pistons
. .
{
Enlarging pistons
}
B23P 15/12
.
gratings
{
(making gratings by methods covered by other subclasses B21D 47/005)
}
.
gear parts, e.g. gear wheels
B23P 15/16
.
plates with holes of very small diameter, e.g. for spinning or burner nozzles
B23P 15/18
.
brake shoes
B23P 15/20
.
railroad requirements, e.g. buffers
B23P 15/22
.
cartridges or like shells
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B23P 15/24
.
dies (B21C 3/18, B21C 25/10, B21D 37/20 take precedence)
B23P 15/243
. .
{
Honeycomb dies
}
B23P 15/246
. .
{
Laminated dies
}
B23P 15/26
.
heat exchangers
{
or the like (making heat exchangers by methods covered by other subclasses B21D 53/02)
}
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B23P 15/28
.
cutting tools (sawing tools B23D 63/00, B23D 65/00; files or rasps B23D 73/00)
B23P 15/30
. .
lathe or like tools
B23P 15/32
. .
twist-drills
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B23P 15/34
. .
milling cutters
B23P 15/36
. . .
for thread-cutting
B23P 15/38
. .
planing or slotting tools (B23P 15/30 takes precedence)
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B23P 15/40
. .
shearing tools
B23P 15/403
. . .
{
razor blades
}
B23P 15/406
. . .
{
rotary or plane die cutters
}
B23P 15/42
. .
broaching tools
B23P 15/44
. .
scraping or shaving tools
B23P 15/46
. .
reaming tools
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B23P 15/48
. .
threading tools (milling cutters for thread-cutting B23P 15/36)
B23P 15/50
. . .
dies
B23P 15/52
. . .
taps
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Metal-working operations, not covered by a single other subclass or another group in this subclass
B23P 17/02
.
Single metal-working processes; Machines or apparatus therefor
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B23P 17/04
.
characterised by the nature of the material involved or the kind of product independently of its shape
. .
Making steel wool or the like
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Machines for simply fitting together or separating metal parts,or metal and non-metal parts, whether or not involving some deformation (connecting metal parts or objects by metal-working procedures B23P 11/00, B21J, B23K); Tools or devices therefor so far as not provided for in other classes (hand tools in general B25)
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.
{
Article feeders for assembling machines (screws or nuts being carried by a disposable strip or disc B25B 23/045)
}
B23P 19/002
. .
{
orientating the articles
}
B23P 19/003
. .
{
Escapement mechanisms used therewith
}
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B23P 19/004
. .
{
Feeding the articles from hoppers to machines or dispensers
}
B23P 19/005
. . .
{
by using flowing gases
}
B23P 19/006
. .
{
Holding or positioning the article in front of the applying tool
}
B23P 19/007
. .
{
Picking-up and placing mechanisms
}
B23P 19/008
.
{
the parts being continuously transported through the machine during assembling or disassembling
}
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.
for connecting objects by press fit or for detaching same
B23P 19/021
. .
{
Railroad wheels on axles
}
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B23P 19/022
. .
{
Extracting or inserting relatively long parts
}
B23P 19/024
. . .
{
tube bundles
}
B23P 19/025
. .
{
For detaching only
}
B23P 19/027
. .
using hydraulic or pneumatic means (B23P 19/033 takes precedence)
. .
using vibration
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.
for assembling or disassembling parts
B23P 19/041
. .
{
for disassembling pallets
}
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B23P 19/042
. .
{
specially adapted for combustion engines (shape of casings adapted to facilitate fitting or dismantling of engine parts for combustion engines F02F 7/0046)
}
B23P 19/043
. . .
{
for inserting piston-connecting rods assemblies in cylinders
}
B23P 19/045
. . .
{
for assembling valve cotters and retainers of engine valves
}
B23P 19/046
. .
{
Disassembling lids from drums, e.g. by unfolding, for reconditioning or recovery
}
. .
{
for flexible profiles, e.g. sealing or decorating strips in grooves or on other profiles by devices moving along the flexible profile (hand tools therefor B25B 27/0092)
}
B23P 19/048
. .
{
Springs
}
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. .
Screw or nut setting or loosening machines
. . .
{
for pipes or pipe-couplings
}
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. . .
{
Pierce nut setting machines
}
B23P 19/063
. . . .
{
Deforming the nut only
}
B23P 19/064
. . . .
{
Deforming the support material only, e.g. the sheet or plate
}
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B23P 19/065
. . .
{
Arrangements for torque limiters or torque indicators in screw or nut setting machines (for hand tools B25B 23/14)
}
B23P 19/066
. . . .
{
by electrical means
}
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. . .
{
Bolt tensioners (for hand tools B25B 29/02)
}
B23P 19/068
. . . .
{
by using heating means
}
B23P 19/069
. . .
{
Multi-spindle machines
}
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B23P 19/08
. .
Machines for placing washers, circlips, or the like on bolts or other members
B23P 19/082
. . .
{
for placing washers on nuts
}
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. . .
{
for placing resilient or flexible rings, e.g. O-rings, circlips
}
. . . .
{
Non-metallic protective bellows
}
B23P 19/088
. . . .
{
Piston rings in piston grooves
}
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B23P 19/10
.
Aligning parts to be fitted together
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. .
{
using remote centre compliance devices
}
B23P 19/105
. . .
{
using sensing means
}
B23P 19/107
. .
{
using oscillating, rotating or vibrating movements
}
B23P 19/12
. .
Alignment of parts for insertion into bores
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Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
B23P 21/002
.
{
the units stationary whilst being composed
}
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B23P 21/004
.
{
the units passing two or more work-stations whilst being composed
}
B23P 21/006
. .
{
the conveying means comprising a rotating table
}
B23P 21/008
.
{
the assembling machines or tools moving synchronously with the units while these are being assembled
}
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Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass (if the particular kinds of operation are not essential B23Q 37/00 to B23Q 41/00;
{
working by laser beam combined with other working of metal B23K 26/0093
}
)
B23P 23/02
.
Machine tools for performing different machining operations (lathes, e.g. capstan lathes, B23B; combined horizontal boring and milling machines B23B 39/02)
B23P 23/04
.
for both machining and other metal-working operations
B23P 23/06
.
Metal-working plant comprising a number of associated machines or apparatus
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Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress
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B23P 25/003
.
{
immediately preceeding a cutting tool
}
B23P 25/006
. .
{
Heating the workpiece by laser during machining
}
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B23P 2700/00
Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
B23P 2700/01
.
Aircraft parts
B23P 2700/02
.
Camshafts
B23P 2700/03
.
Catalysts or parts thereof
B23P 2700/04
.
Connecting rods
B23P 2700/05
.
Cooking vessels
B23P 2700/06
.
Cooling passages of turbine components, e.g. unblocking or preventing blocking of cooling passages of turbine components
B23P 2700/07
.
Crankshafts
B23P 2700/08
.
Fittings for doors and windows of buildings
B23P 2700/09
.
Heat pipes
B23P 2700/10
.
Heat sinks
B23P 2700/11
.
Joints, e.g. ball joints, universal joints
B23P 2700/12
.
Laminated parts
B23P 2700/13
.
Parts of turbine combustion chambers
B23P 2700/14
.
Suspension elements of automobile vehicles
B23P 2700/50
.
Other automobile vehicle parts, i.e. manufactured in assembly lines
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013