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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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WORKING AND PROCESSING OF WIRE (
{
reducing diameter by
}
rolling of metal B21B; by drawing, auxiliary operations used in connection with metal working without essentially removing material B21C)
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Guide Heading:
Wire working characterised by operations performed
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Bending wire other than coiling; Straightening wire
B21F 1/002
.
{
by means of manually operated devices, e.g. pliers
}
B21F 1/004
.
{
by means of press-type tooling
}
B21F 1/006
.
{
in 3D with means to rotate the tools about the wire axis
}
B21F 1/008
.
{
in 3D with means to rotate the wire about its axis
}
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B21F 1/02
.
Straightening
B21F 1/023
. .
{
in a device rotating about the wire axis
}
B21F 1/026
. .
{
Straightening and cutting
}
B21F 1/04
.
Undulating
B21F 1/06
.
Bending wire-eyes
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Coiling wire into particular forms
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B21F 3/02
.
helically
B21F 3/027
. .
with extended ends formed in a special shape, e.g. for clothes-pegs
B21F 3/04
. .
externally on a mandrel or the like
B21F 3/06
. .
internally on a hollow form
B21F 3/08
.
to flat spiral
B21F 3/10
.
to spirals other than flat, e.g. conical
B21F 3/12
.
of interconnected helical springs
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Upsetting wire
{
or pressing operations affecting the wire cross-section
}
(in the manufacture of nails or pins B21G 3/12)
B21F 5/005
.
{
Upsetting wire
}
Twisting wire; Twisting wire together (for connections of limited size B21F 15/04)
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Straining wire (straining pre-stressing wires for concrete E04G 21/12; connections or attachments adapted for straining F16G 11/00;
{
bundling machines or tools B65B 13/00
}
)
B21F 9/002
.
{
to maintain tension in the wire, e.g. to pull the wire taut
}
B21F 9/005
.
{
to affect the material properties of the wire
}
B21F 9/007
.
{
to induce a plastic deformation of the wire
}
B21F 9/02
.
by tools adapted also for making connections
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Cutting wire (hand cutting tools B26B)
B21F 11/005
.
{
springs
}
Splitting wire
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Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire (tools for both straining and connecting B21F 9/00; jacketing or reinforcing B21F 17/00; manufacture of wire network B21F 27/00; in making bands B21F 43/00)
{
bundling machines or tools B65B 13/00; for semiconductors H01L 24/85
}
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B21F 15/02
.
wire with wire
B21F 15/04
. .
without additional connecting elements or material, e.g. by twisting
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B21F 15/06
. .
with additional connecting elements or material
{
(B21F 27/08 takes precedence)
}
B21F 15/08
. . .
making use of soldering or welding
{
(B21F 27/10 takes precedence)
}
B21F 15/10
.
wire with sheet metal
Jacketing or reinforcing articles with wire (by winding B65H 54/00, B65H 81/00; by braiding D04C)
Metallic coating of wire (by extruding B21C 23/24; by soldering or welding, e.g. cladding or plating B23K; by other non-mechanical means C23; electroplating C25D)
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Feeding wire in wire-working machines or apparatus (applicable also to feeding rods or strips B21D 43/00)
B21F 23/002
.
{
Feeding means specially adapted for handling various diameters of wire or rod
}
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B21F 23/005
.
{
Feeding discrete lengths of wire or rod
}
B21F 23/007
. .
{
using pick-up means, e.g. for isolating a predefined number of wires from a bundle
}
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Guide Heading:
Wire working characterised by the particular articles produced
Making barbed wire
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Making wire network, i.e. wire nets (meshed-ring network B21F 31/00; in making bands B21F 43/00; using looms D03D)
B21F 27/005
.
{
Wire network per se
}
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B21F 27/02
.
without additional connecting elements or material at crossings, e.g. connected by knitting
B21F 27/04
. .
Manufacturing on machines with rotating blades or formers
B21F 27/06
. .
Manufacturing on twister-gear machines
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B21F 27/08
.
with additional connecting elements or material at crossings
B21F 27/10
. .
with soldered or welded crossings
{
(resistance spot welding machines for manufacturing of metallic grids or mats B23K 11/008)
}
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B21F 27/12
.
Making special types or portions of network by methods or means specially adapted therefor
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B21F 27/121
. .
{
of tubular form, e.g. as reinforcements for pipes or pillars
}
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B21F 27/122
. . .
{
by attaching a continuous stirrup to longitudinal wires
}
B21F 27/124
. . . .
{
applied by rotation
}
B21F 27/125
. . .
{
by attaching individual stirrups to longitudinal wires
}
B21F 27/127
. . .
{
by bending preformed mesh
}
B21F 27/128
. .
{
of three-dimensional form by connecting wire networks, e.g. by projecting wires through an insulating layer
}
B21F 27/14
. .
Specially bending or deforming free wire ends
B21F 27/16
. .
for spring mattresses
B21F 27/18
. .
of meshed work for filters or sieves
B21F 27/20
. .
of plaster-carrying network
B21F 27/22
. .
of network for wire-reinforced glass or the like
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Making fencing or like material made partly of wire (B21F 25/00, B21F 27/00 take precedence)
B21F 29/02
.
comprising bars or the like connected by wires
Making meshed-ring network from wire
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Tools or devices specially designed for handling or processing wire fabrics or the like
B21F 33/002
.
{
Coiling or packing wire network
}
B21F 33/005
.
{
Cutting wire network
}
B21F 33/007
.
{
Connecting wire network
}
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B21F 33/02
.
Mounting of wire network on frames
B21F 33/025
. .
{
Mounting of mattress innersprings on borderframes
}
B21F 33/04
.
Connecting ends of helical springs for mattresses
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Making springs from wire (by coiling wire B21F 3/00; making resilient rings B21F 37/02)
B21F 35/003
.
{
Multi-filament springs, e.g. made of stranded, braided, cable or multi-filament material
}
B21F 35/006
.
{
Double twist coil springs
}
B21F 35/02
.
Bending or deforming ends of coil springs to special shape
B21F 35/04
.
Making flat springs, e.g. sinus springs
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Manufacture of rings from wire (in chain making B21L; making of tyre beads B29D 30/48)
B21F 37/02
.
of resilient rings, e.g. key-rings
B21F 37/04
.
of washers (B21F 37/02 takes precedence)
Making wheel spokes from wire
Making umbrella frames or members from wire
Making bands, e.g. bracelets, or wire (making chains B21L; using looms D03D)
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Wire-working in the manufacture of other particular articles (of pins, needles, nails, hairpins B21G; of chains B21L;
{
for semiconductor devices H01L 24/42
}
)
B21F 45/002
.
{
of frames for spectacles
}
B21F 45/004
.
{
Mounting bails on containers
}
B21F 45/006
.
{
of concrete reinforcement fibres
}
B21F 45/008
.
{
of medical instruments, e.g. stents, corneal rings (medical science A61)
}
B21F 45/02
.
of clothes hangers
B21F 45/04
.
of elements, e.g. levers or links, for bottle stoppers
B21F 45/06
.
of flexible shafts or hollow conduits, e.g. for Bowden mechanisms
B21F 45/08
.
of loom heddles
B21F 45/10
.
of cards for fabric-napping machines
B21F 45/12
.
of fishing hooks
B21F 45/14
.
of end-pieces for laces or ropes
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B21F 45/16
.
of devices for fastening or securing purposes
B21F 45/18
. .
of slide fastener elements
B21F 45/20
. .
of springs hooks; of spring safety hooks
B21F 45/22
. .
of paper fasteners or clips (staples B21F 45/24)
B21F 45/24
. .
of staples; of belt-fastening elements
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B21F 45/26
. .
of buttons
B21F 45/28
. . .
of "patent-fastener" or press-button type
Subject matter not provided for in other groups of this subclass
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013