Bi-petal l check-valve construction
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United States of America Patent
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-
Sep 19, 1989
Grant Date -
N/A
app pub date -
Dec 14, 1988
filing date -
Dec 14, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stiffly compliant upstop extends parallel to the hinge axis of a bi-petal check valve and provides essentially a continuous line of contact with the downstream side of each valve member. This line of contact is symmetrically located to span virtually the entire distance between the spaced hinge-suspension points unique to each valve member. And continuity of the respective lines of upstop contact is maintained throughout a terminal range of angular displacement, as the upstop compliantly deforms in approach to the full-open condition of the respective valve members.
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Cited Art Landscape
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