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US 5,349,896 AGranted
Pump diaphragm
AssigneeW. L. Gore & Associates, Inc.
InventorsWilliam E. Delaney, III, John M. Connelly, Jr., Fred C. Sicker
Life of this patent
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Abstract
A flexible pump diaphragm for pumping fluids is described in which the diaphragm has a number of ribs or troughs located radially across its circumferential flexure portion.
Claims1
A pump diaphragm having a circularly-configured body having a convex face side and a concave air-pressure receiving side consisting of a composite in which the convex face side is mace of polytetrafluoroethylene and the concave air-pressure receiving side is made of a resilient elastomeric material;
- said body having a central opening for receiving a piston rod;
- said body having a generally annular flexure portion that flexes in operation;
- said body having on the face side a plurality of radially disposed uniformly spaced ribs extending radially outwardly across said flexure portion.
Dependencies are inferred from the claim text.