Patent Classification Explorer PCE

DIFF Subgroup

F16K 15/02

with guided rigid valve members

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Check valves > with guided rigid valve members

CPC:

Check valves (valves specially adapted for inflatable balls A63B41/00) > with guided rigid valve members

Of 6 combined children, 4 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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F16K 15/021 +1 CPC CPC only CPC only
F16K 15/025 +1 CPC CPC only CPC only
F16K 15/03 with a hinged closure member +4 CPC IPC+CPC Available in IPC and CPC
F16K 15/04 shaped as balls +3 CPC IPC+CPC Available in IPC and CPC
F16K 15/06 with guided stems +2 CPC IPC+CPC Available in IPC and CPC
F16K 15/08 shaped as rings IPC+CPC Available in IPC and CPC