Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1983-12-23
1985-10-01
Cohan, Alan
Fluid handling
Systems
Flow path with serial valves and/or closures
13763705, 25112903, 74625, F16L 2900, F16K 3105
Patent
active
045439923
ABSTRACT:
A fluid coupling assembly is provided for fluid transfer with relatively small pressure loss between a pair of fluid flow conduits and with little or no fluid spillage upon subsequent conduit separation. The coupling assembly comprises male and female valve units mounted respectively on the flow conduits and matingly engageable to align valve unit flow paths for fluid transfer between the flow conduits. The flow path of each valve unit is normally closed by an externally finned, motor-driven poppet valve having a valve head contoured for seated reception onto a valve seat and for substantially flush surface abutting engagement with the valve head of the other poppet valve to define a substantially minimum residual volume between the valve heads when the two valve units are matingly engaged. With the valve units engaged, the two poppet valves are independently retracted from their respective valve seats to open positions by a pair of drive motors to permit fluid transfer with relatively small pressure loss between the flow conduits, followed by drive motor operation to return the poppet valves to their closed positions prior to valve unit separation. Each drive motor is coupled to the associated poppet valve by a drive linkage including selectively operable manual override means for manually opening and closing the associated poppet valve in the event of drive motor failure.
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Cohan Alan
Fox John C.
Lowrey Stuart O.
Paul James W.
TRW Inc.
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