Three-position, self-centering valve for control of fluid actuat

Details Three-position, self-centering valve for control of fluid actuat Three-position, self-centering valve for control of fluid actuat

1976-07-12

1978-03-28

Nilson, Robert G.

Fluid handling

Systems

With selective motion for plural valve actuator

91465, 137596, 13762569, F16K 1116

Patent

active

040809927

ABSTRACT:
A pair of fluid valves are formed in a common valve body. Movable pistons in the respective valves are normally biased by the fluid pressure input to closed positions whereby button-like or rod-like extensions of the pistons protrude through a top wall of the valve body to urge a pivotal valve operator to a neutral centered position. By manually pivoting the operator against one or the other of the extensions the respective pistons may be moved to open the respective valves.

REFERENCES:
patent: 1521628 (1925-01-01), Jones
patent: 2936001 (1960-05-01), Lull
patent: 3149537 (1964-09-01), Fink
patent: 3279748 (1966-10-01), Coulter
patent: 3318333 (1967-05-01), McCollum
patent: 3766944 (1973-10-01), Distler
patent: 3939757 (1976-02-01), Jablonsky

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