Power plants – Combustion products used as motive fluid – With safety device
Patent
1986-03-03
1988-04-26
Nilson, Robert G.
Power plants
Combustion products used as motive fluid
With safety device
137519, 137538, 220 85F, 220 85R, 220 85V, 244135R, B64D 4500, B65D 5100, F02G 300
Patent
active
047396121
ABSTRACT:
The invention relates to a shuttle valve designed to retain fluid in a pressurized system when the cap or closure of the filler neck is damaged or left off. In a preferred application, the shuttle valve of the present invention is designed to be installed in the filler neck of an oil storage tank incorporated in a turbine engine of an airplane or other high speed vehicle. The valve head comprises a piston which is disposed to move slideably and is biased by gravity, or other means, to seat in normally closed position near the inner end of a cylindrical sleeve which is suspended coaxially from an annular flange in the mouth of the filler neck. The cylindrical sleeve has an axial length which substantially exceeds that of the piston, which in one embodiment is a hollow cylinder closed at one end. The outer side wall of the sleeve has a plurality of openings spaced-apart around its circumference, which are exposed when the valve head piston is seated at the base of the sleeve in its normally open position, and which are closed when the piston is forced toward the outer end of the sleeve in response to a pressure differential created by the breather pressure of the operating engine.
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patent: 4366669 (1983-01-01), Jones
Nilson Robert G.
Pugh Martha G.
WS Corporation
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