Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis

Introduced: September 1968

CPC subdivides this area 2x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

Child Classifications

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F01B 3/0002 +3 CPC CPC only CPC only
F01B 3/0032 +4 CPC CPC only CPC only
F01B 3/0079 CPC only CPC only
F01B 3/0082 +3 CPC CPC only CPC only
F01B 3/02 with wobble-plate IPC+CPC Available in IPC and CPC
F01B 3/04 the piston motion being transmitted by curved surfaces +1 CPC IPC+CPC Available in IPC and CPC
F01B 3/10 Control of working-fluid admission or discharge peculiar thereto +2 CPC IPC+CPC Available in IPC and CPC