Push/pull valve for two or three way operation

Details Push/pull valve for two or three way operation Push/pull valve for two or three way operation

1975-05-05

1977-01-04

Cohan, Alan

Motors: expansible chamber type

With motive fluid valve

Unitary inlet and exhaust valve for single working chamber

13762568, F16K 1107

Patent

active

040006859

ABSTRACT:
A valve for introducing air or other fluid into a fluid actuated mechanical device has an L-shaped passage through a valve stem. The valve stem is movable lengthwise between open and closed positions. In a fully open position the L-shaped passage delivers fluid from a source of fluid under pressure to a channel in a housing. In closed position the delivery end of the L-shaped passage is blocked. The valve stem also provides means for venting fluid from the channel while the L-shaped passage is blocked, when the stem is in an intermediate position.

REFERENCES:
patent: 1080273 (1913-12-01), Fountain
patent: 2291563 (1942-07-01), Rotter et al.
patent: 2906492 (1959-09-01), Conrad
patent: 2940465 (1960-06-01), Frantz
patent: 3146793 (1964-09-01), Boys et al.
patent: 3545479 (1970-12-01), Loe

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