Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor
Patent
1992-06-18
1994-01-11
Bertsch, Richard A.
Pumps
Expansible chamber type
Having pumping chamber pressure responsive distributor
417567, 137852, F04B 2102
Patent
active
052775607
ABSTRACT:
A ring valve assembly for use in a reciprocating type fluid pump with a piston cylinder and a cylinder head includes a ring valve having a fluid seal surface for selectively closing a fluid passage of a cylinder head and an annular ring retainer having a fulcrum edge and tapered top surface. The retainer is positioned beneath the ring valve and a slight clearance is designed in such that the ring valve experiences as a first stage of movement/deflection slight vertical travel. Continued operation of the fluid pump results in a second stage of deflection where the ring valve deflects into a frustoconical shape and lays against the tapered surface of the retainer, pivoting about the fulcrum edge.
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Ritchie Nathan
Streutker Dan L.
Bertsch Richard A.
Holset Engineering Company, Inc.
Korytnyk Peter
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