Composite diaphragm having two layers wherein the first layer is

Details Composite diaphragm having two layers wherein the first layer is Composite diaphragm having two layers wherein the first layer is

1997-12-09

1999-09-14

Denion, Thomas E.

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92103R, 92103F, 92103SD, F01B 1900

Patent

active

059505230

ABSTRACT:
A composite flexible diaphragm for a diaphragm pump. The diaphragm has a diaphragm body with an outer perimeter, a center axis, and first and second exterior surfaces. The body has a perimeter flange portion extending around the body adjacent the outer perimeter. The body also has a disc portion extending radially outward from the center axis. The body has a convoluted flex portion disposed between the perimeter flange portion and the disc portion. The composite flexible diaphragm has a first layer of a chemically resistant material defining the first exterior surface. The diaphragm also has a second layer of flexible material which is bonded to the first layer and defines the second exterior surface of the diaphragm. The first layer of chemically resistant material has a reduced material thickness in the area of the flex portion of the diaphragm body.

REFERENCES:
patent: 2460168 (1949-01-01), Caserta
patent: 2730131 (1956-01-01), Asp et al.
patent: 4741252 (1988-05-01), Harter et al.
patent: 4864918 (1989-09-01), Martin
patent: 5165869 (1992-11-01), Reynolds
patent: 5217797 (1993-06-01), Knox et al.
patent: 5349896 (1994-09-01), Delaney, III et al.
patent: 5634391 (1997-06-01), Eady

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