Motors: expansible chamber type – With motive fluid valve – Pilot valve
Patent
1976-08-19
1978-07-04
Cohen, Irwin C.
Motors: expansible chamber type
With motive fluid valve
Pilot valve
91418, 251 635, 251357, 251358, F15B 1304, F16K 146
Patent
active
040981711
ABSTRACT:
An improved pneumatic piston apparatus is provided wherein a movable poppet valve member employs at least one composite member exposed to air pressure which varies dynamically during the operation of the apparatus. Delamination of the composite member and resultant malfunction of the poppet valve are avoided by a novel construction in accordance with the principles of the present invention, which excludes the dynamically varying air pressure from access to the interface between the layers of the separate materials comprising the composite member. The effect achieved by the novel construction is further enhanced by the manner in which the composite member is retained on the poppet valve member. Unwanted movement of the piston conjointly with the motion of the poppet valve member is precluded in the invention by providing an air space therebetween.
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Cohen Irwin C.
Pneutek, Inc.
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