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DIFF Subgroup
F04C 18/32

having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members

Introduced: January 1980

Title

Titles differ between systems:

IPC: having both the movement defined in group and relative reciprocation between the co-operating members

CPC: having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members

Full Title

Full titles differ between systems:

IPC:

Rotary-piston pumps specially adapted for elastic fluids > having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members > having both the movement defined in group and relative reciprocation between the co-operating members

CPC:

Rotary-piston pumps specially adapted for elastic fluids (with fluid ring or the like F04C19/00; rotary-piston pumps in which the working-fluid is exclusively displaced by one or more reciprocating pistons F04B) > having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members > having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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  • F04C 18/321 CPC only CPC only
  • F04C 18/322 CPC only CPC only