IPC 7 English version B21D 41/00-B21D 55/00

B21D04100-B21D05500

SECTION B – PERFORMING OPERATIONS; TRANSPORTING

B 21

MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (casting, powder metallurgy B22; shearing B23D; working of metal by the action of a high concentration of electric current B23H; soldering, welding, flame-cutting B23K; other working of metal B23P; punching sheet material in general B26F; processes for changing of physical properties of metals C21D, C22F; electroforming C25D 1/00)

B 21 D

WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING (operations of the kind involved in the manufacture of such products B21B, B21C; working or processing of wire B21F; cutting or severing devices or machines in general B26; presses in general B30B)

41/

Application of procedures in order to alter the diameter of tube ends (B21D 39/00 takes precedence)

41/

Enlarging

41/

Reducing; Closing

43/

Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices (cutting devices associated with the tool, see the relevant group for the tool)

43/

Advancing work in relation to the stroke of the die or tool

43/

by means in mechanical engagement with the work

43/

specially adapted for multi-stage presses

43/

by positive or negative engaging parts co-operating with corresponding parts of the sheet or the like to be processed, e.g. carrier bolts or grooved section in the carriers

43/

by rollers

43/

by one or more pairs of rollers for feeding sheet or strip material [2]

43/

by grippers

43/

for feeding sheet or strip material [2]

43/

by chains or belts

43/

by linearly moving tables [2]

43/

by turning devices, e.g. turn-tables

43/

by gravity, e.g. chutes

43/

by means in pneumatic or magnetic engagement with the work

43/

Storage arrangements; Piling or unpiling (in general B65G)

43/

Devices for piling sheets

43/

Devices for removing sheets from a stack

43/

Stops

43/

Associations of cutting devices therewith

45/

Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass

45/

Ejecting devices [2]

45/

interrelated with motion of tool [2]

45/

Stripping-off devices [2]

45/

interrelated with motion of tool [2]

45/

Combined ejecting and stripping-off devices [2]

Processing sheet metal or metal tubes, or processing metal profiles according to any of the preceding groups, in the manufacture of finished or semi-finished articles

47/

Making rigid structural elements or units, e.g. honeycomb structures

47/

beams or pillars [2]

47/

by expanding [2]

47/

composite sheet metal profiles

49/

Sheathing or stiffening objects (by winding wire or tape thereon B65H 54/00, B65H 81/00; specially adapted for manufacturing conductors or cables H01B 13/26)

51/

Making hollow objects (from thick-walled or non-uniform tubes B21K 21/00)

51/

not characterised by the particular use (cans or tins B21D 51/26)

51/

built-up objects, e.g. objects with rigidly-attached bottom or cover

51/

folded objects

51/

ball-shaped objects

51/

conically or cylindrically shaped objects

51/

objects with corrugated walls

51/

Flattening hollow objects for transport or storage; Re-forming same (making tubes from doubled flat material B21C 37/14)

51/

characterised by the particular structure or use (making heat exchangers B21D 53/02)

51/

vessels, e.g. tubs, vats, tanks, sinks, or the like

51/

barrels

51/

pots, e.g. for cooking

51/

high-pressure containers, e.g. boilers, bottles

51/

cans or tins; Closing same in a permanent manner (making outlet arrangements B21D 51/38; welding or soldering B23K) [2]

51/

Folding the longitudinal seam

51/

Folding the circumferential seam

51/

by rolling

51/

by pressing

51/

collapsible or like thin-walled tubes, e.g. for toothpaste

51/

Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels

51/

Making outlet openings, e.g. bung holes

51/

Making or attaching spouts

51/

Making closures, e.g. caps (folded of thin metal foils in the way of making paper caps B31D 5/00; making closures in conjunction with applying same B67B)

51/

Placing sealings or sealing material

51/

Making crown caps

51/

Making screw caps

51/

boxes, cigarette cases, or the like

51/

cartridge cases, e.g. for ammunition, for letter carriers in pneumatic-tube plants

53/

Making other particular articles (making chains or chain parts B21L)

53/

heat exchangers, e.g. radiators, condensers (making finned or ribbed tubes by fixing strip material or the like to tubes B21C 37/22) [2]

53/

of sheet metal

53/

of metal tubes

53/

of both metal tubes and sheet metal (connecting tubes in openings B21D 39/06)

53/

parts of bearings; sleeves; valve seats or the like

53/

cages for bearings

53/

belts, e.g. machine-gun belts

53/

rings, e.g. barrel hoops

53/

of hollow or C-shaped cross-section, e.g. for curtains, for eyelets

53/

washers, e.g. for sealing

53/

with means for preventing rotation

53/

nuts or like thread-engaging members

53/

wheels or the like

53/

gear wheels

53/

wheel rims

53/

wheel covers

53/

brake drums

53/

clips, clamps, or like fastening or attaching devices, e.g. for electric installation

53/

locksmith's goods, e.g. handles

53/

hinges, e.g. door hinge plates

53/

keys

53/

fancy goods, e.g. jewellery products (making wire fabrics B21F)

53/

haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples

53/

buttons, e.g. press-buttons, snap fasteners

53/

metal slide-fastener parts

53/

fastener elements; Attaching such elements so far as this procedure is combined with the process for making the elements

53/

slides

53/

stops

53/

end-pieces for laces or ropes

53/

cutlery wares; garden tools or the like

53/

spoons; table forks

53/

knives; scissors; cutting blades (B21D 53/72 takes precedence; handle portions B21D 53/70)

53/

spades; shovels (handle portions B21D 53/70)

53/

rakes, garden forks, or the like (handle portions B21D 53/70)

53/

handle portions (B21D 53/72 takes precedence)

53/

sickles; scythes

53/

frames for openings, e.g. for windows, doors, handbags

53/

writing or drawing instruments, e.g. writing pens, erasing pens

53/

propeller blades; turbine blades

53/

dustproof covers; safety covers

53/

perforated music sheets; pattern sheets, e.g. for control purposes, stencils

53/

other parts for engines, e.g. connecting-rods

53/

other parts for bicycles or motorcycles

53/

other parts for vehicles, e.g. cowlings, mudguards

53/

axle-housings

53/

other parts for aircraft

55/

Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass (for presses in general B30B; safety devices in general F16P)

B21D 21/00 - B21D 39/20