Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1992-04-23
1993-07-06
Chamber, A. Michael
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
251 3001, 25112904, 251 31, F16K 3112
Patent
active
052246841
ABSTRACT:
A valve for controlling fluid flow is provided, which permits fluid flow through the valve upon a first exposure to incident light, and prevents fluid flow through the valve upon a second exposure to incident light. The valve includes inlet and outlet passageways that are adapted to divert a portion of the fluid away from a central passageway to shift a plunger between a first position and a second position. In the first position, the plunger permits fluid flow through the valve, and in the second position, the plunger prevents fluid flow through the valve.
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Chamber A. Michael
Griswold Gary L.
Kirn Walter N.
Levine Charles D.
Minnesota Mining and Manufacturing Company
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