DIFF Subgroup
B21D 22/20 Deep-drawing (special deep-drawing arrangements in, or in connection with, presses B21D24/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Deep-drawing
CPC: Deep-drawing (special deep-drawing arrangements in, or in connection with, presses B21D24/00)
Full Title
Full titles differ between systems:
IPC:
Shaping without cutting, by stamping, spinning, or deep-drawing > Deep-drawing
CPC:
Shaping without cutting, by stamping, spinning, or deep-drawing (otherwise than using rigid devices or tools or yieldable or resilient pads B21D26/00) > Deep-drawing (special deep-drawing arrangements in, or in connection with, presses B21D24/00)
Of 11 combined children, 6 exist in both systems.
5 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B21D 22/22 with devices for holding the edge of the blanks (B21D22/24 - B21D22/30 take precedence; shaping over a die without external former B21D11/02) +1 CPC IPC+CPC Available in IPC and CPC
- B21D 22/24 involving two drawing operations having effects in opposite directions with respect to the blank IPC+CPC Available in IPC and CPC
- B21D 22/26 for making peculiarly, e.g. irregularly, shaped articles IPC+CPC Available in IPC and CPC