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

Introduced: January 1980

Title

Titles differ between systems:

IPC: 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

CPC: 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

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

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

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

5 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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F04C 18/32 having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members since 1980 +2 CPC IPC+CPC Available in IPC and CPC
F04C 18/34 having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members since 1980 IPC+CPC Available in IPC and CPC
F04C 18/36 having both the movements defined in groups F04C18/22 and F04C18/24 since 1980 IPC+CPC Available in IPC and CPC
F04C 18/38 having the movement defined in group F04C18/02 and having a hinged member (F04C18/32 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
F04C 18/40 having the movement defined in group F04C18/08 or F04C18/22 and having a hinged member since 1980 IPC+CPC Available in IPC and CPC