Pump, control valve and diaphragm
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United States of America Patent
Stats
-
Oct 15, 1996
Grant Date -
N/A
app pub date -
Nov 3, 1994
filing date -
Mar 5, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A double acting, fluid actuated pump is disclosed. The pump includes a pair of diaphragms interconnected by a piston. Each diaphragm is formed of resilient material and comprises a central portion for attachment to the piston, a peripheral portion for attachment to a surrounding housing and an intermediate conical portion extending between the central portion and the peripheral portion. A first hinge merges the intermediate portion with the central portion. A second hinge merges the intermediate portion with the peripheral portion. Each hinge comprises an annular protuberance extending out of an extension of the cone of the intermediate portion such that a portion of the first hinge and a corresponding portion of the second hinge project from opposite sides of the cone to provide a reliable, fatigue resistant, diaphragm. Valving for the pump is also disclosed.
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