cans or tins; Closing same in a permanent manner (making outlet arrangements B21D51/38; welding or soldering B23K)

Introduced: September 1968

Title

Titles differ between systems:

IPC: cans or tins; Closing cans or tins in a permanent manner

CPC: cans or tins; Closing same in a permanent manner (making outlet arrangements B21D51/38; welding or soldering B23K)

Full Title

Full titles differ between systems:

IPC:

Making hollow objects > characterised by the use of the objects > cans or tins; Closing cans or tins in a permanent manner

CPC:

Making hollow objects (from thick-walled or non uniform tubes B21K21/00) > characterised by the use of the objects (making heat exchangers B21D53/02) > cans or tins; Closing same in a permanent manner (making outlet arrangements B21D51/38; welding or soldering B23K)

CPC subdivides this area 5x more granularly than IPC with 8 additional codes.

8 codes are CPC-only extensions.

Child Classifications

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B21D 51/2607 CPC only CPC only
B21D 51/2615 +3 CPC CPC only CPC only
B21D 51/2646 CPC only CPC only
B21D 51/2653 +1 CPC CPC only CPC only
B21D 51/2669 CPC only CPC only
B21D 51/2676 CPC only CPC only
B21D 51/2684 CPC only CPC only
B21D 51/2692 CPC only CPC only
B21D 51/28 Folding the longitudinal seam IPC+CPC Available in IPC and CPC
B21D 51/30 Folding the circumferential seam IPC+CPC Available in IPC and CPC