Valve and diaphragm for a pump
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United States of America Patent
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Sep 30, 2014
Grant Date -
May 5, 2011
app pub date -
Feb 20, 2009
filing date -
May 16, 2008
priority date (Note) -
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Abstract
A diaphragm pump (10) having a pump body (11) providing opposing pump chambers (12, 13). Mounted in the body is a piston assembly (14) having pistons (15) joined by a piston rod (16). Each piston (15) is sealingly connected to the body (11) by a diaphragm (22) so that each of the chambers (12, 13) is divided into a first and a second sub-chamber, with the flow of fluid being pumped is governed by a pair of valves (30). Each valve (30) includes a base (31) to which there is movably attached a movable valve member (35).
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