Deflator

Details Deflator Deflator

1990-01-02

1991-04-16

Rivell, John

Fluid handling

Inflatable article

137855, 251342, 446222, F16K 1518, F16K 3144

Patent

active

050074490

ABSTRACT:
A relatively thin, disk shaped device containing a slot in its face, which slot narrows as it reaches the center of the disk so that when it engages the valve stem of a cut-check valve, the valve is deformed without damage a sufficient degree so that the cut-check valve is unseated allowing air to pass either way through the cut-check valve.

REFERENCES:
patent: 1104028 (1914-07-01), Watson
patent: 1256388 (1918-02-01), Stevens
patent: 1319280 (1919-10-01), Hill
patent: 1396646 (1921-11-01), Mellor
patent: 2271370 (1942-01-01), Gora
patent: 2396906 (1946-03-01), Windson
patent: 2734308 (1956-02-01), Gassaway
patent: 2755060 (1956-07-01), Twyman
patent: 2942614 (1960-06-01), Lardner
patent: 2946555 (1960-07-01), Cantor
patent: 3056408 (1962-10-01), Brown
patent: 3257695 (1966-06-01), Frame
patent: 3925852 (1975-12-01), Wood
patent: 4307869 (1981-12-01), Mittleman
patent: 4690375 (1987-09-01), Vorhis

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