of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Rotary-piston machines or engines > of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

CPC:

Rotary-piston machines or engines (with axes of co-operating members non parallel F01C3/00; with the working-chamber walls at least partly resiliently deformable F01C5/00; with fluid ring or the like F01C7/00; rotary-piston machines or engines in which the working fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F01B13/00) > of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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F01C 1/0207 +3 CPC CPC only CPC only
F01C 1/04 of internal-axis type +1 CPC IPC+CPC Available in IPC and CPC
F01C 1/06 of other than internal-axis type (F01C1/063 takes precedence) IPC+CPC Available in IPC and CPC
F01C 1/063 with coaxially-mounted members having continuously-changing circumferential spacing between them since 1980 IPC+CPC Available in IPC and CPC