Drums

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Producing pneumatic or solid tyres or parts thereof > Pneumatic tyres or parts thereof > Building tyres > by the flat-tyre method, i.e. building on cylindrical drums > Drums

CPC:

Producing pneumatic or solid tyres or parts thereof (producing inner tubes B29D23/24; constructional form of tyres or parts thereof B60C; connection of valves to inflatable elastic bodies B60C29/00; testing of tyres G01M17/02) > Pneumatic tyres or parts thereof > Building tyres > by the flat-tyre method, i.e. building on cylindrical drums > Drums

CPC subdivides this area 4x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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B29D 2030/241 2nd only CPC only CPC only
B29D 30/242 +1 CPC CPC only CPC only
B29D 30/244 +3 CPC CPC only CPC only
B29D 30/26 Accessories or details, e.g. membranes, transfer rings since 1985 +9 CPC IPC+CPC Available in IPC and CPC