of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Rotary-piston machines or pumps > of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

CPC:

Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C3/00; with the working-chamber walls at least partly resiliently deformable F04C5/00; with fluid ring or the like F04C7/00; rotary-piston pumps specially adapted for elastic fluids F04C18/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) > of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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F04C 2/082 +3 CPC CPC only CPC only
F04C 2/10 of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member since 1980 +3 CPC IPC+CPC Available in IPC and CPC
F04C 2/12 of other than internal-axis type since 1980 +2 CPC IPC+CPC Available in IPC and CPC