Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1983-08-12
1986-06-10
Cohan, Alan
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
13762541, 13762542, 13762547, 251297, F16K 3700, F16K 11085
Patent
active
045937176
ABSTRACT:
The disclosure relates to a four-way valve, incorporating a fail-safe pivotal valve stem, a finger knob indicating simultaneously both closed and opened ports, and three connector fittings oriented in a Y configuration about the centrally located valve stem body for connection with various types of tubing or catheters. A number of channels bored into the valve stem are oriented to connect various ports within the valve housing in a number of combinations depending on the valve stem position. Detent means are provided to lock the valve stem in a selected position and prevent inadvertent opening or closing of a selected port or ports.
REFERENCES:
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patent: 2680455 (1954-06-01), Raiteri
patent: 3048192 (1962-08-01), Murphy, Jr.
patent: 3115896 (1963-12-01), Roberts et al.
patent: 3157201 (1964-11-01), Littmann
patent: 3238968 (1966-03-01), Pecis
patent: 3385321 (1968-05-01), Ehrens et al.
patent: 3586049 (1971-06-01), Adamson
patent: 3633621 (1972-01-01), Myers
patent: 3678960 (1972-07-01), Leibinsohn
patent: 4219021 (1980-08-01), Fink
Cohan Alan
Rivell John A.
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