Making chains or chain links of special shape

Introduced: September 1968

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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B21L 11/005 CPC only CPC only
B21L 11/02 each link being formed of a single member of which both ends are bent or shaped to engage the middle portions of the next link IPC+CPC Available in IPC and CPC
B21L 11/10 the chain links having opposed correspondingly shaped cylindrical and hook-like parts of which one parts forms a hinge-like support for the adjacent link (B21L11/02 takes precedence) IPC+CPC Available in IPC and CPC
B21L 11/12 Forming bead chains IPC+CPC Available in IPC and CPC
B21L 11/14 Making chain links with inserted or integrally-formed studs IPC+CPC Available in IPC and CPC