Composite diaphragm for diaphragm pumps
First Claim
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1. A composite diaphragm for diaphragm pumps comprising:
- a) an elastomer body shaped as a circular disk, the body comprising;
i) a dish edge having a clamping area;
ii) a bottom section;
iii) a flexible diaphragm section connecting said dish edge with said bottom section;
iv) a plurality of naps disposed on said elastomer body; and
b) a polytetraflouroethylene (PFTE) coating disposed on a product side of the body, said coating being in a form of a plane ring surface in an area of said flexible diaphragm section, wherein said naps are coated by said coating.
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Abstract
A composite diaphragm for diaphragm pumps comprises an elastomer body and a polytetrafluoroethylene (PFTE) coating on its back side. The elastomer body has a shape of a circular dish that has an edge region with a clamping area, a bottom and a flexible section of the diaphragm that connects the edge of the dish with the bottom. The flexible section of the diaphragm comprises a multitude of naps forming elevations on the coated side of the elastomer body. The PFTE coating is a plane ring surface with the area of the flexible section of the diaphragm.
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Citations
16 Claims
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1. A composite diaphragm for diaphragm pumps comprising:
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a) an elastomer body shaped as a circular disk, the body comprising;
i) a dish edge having a clamping area;
ii) a bottom section;
iii) a flexible diaphragm section connecting said dish edge with said bottom section;
iv) a plurality of naps disposed on said elastomer body; and
b) a polytetraflouroethylene (PFTE) coating disposed on a product side of the body, said coating being in a form of a plane ring surface in an area of said flexible diaphragm section, wherein said naps are coated by said coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification