Diaphragm for pressure regulators and method of making

Details Diaphragm for pressure regulators and method of making Diaphragm for pressure regulators and method of making

1992-11-16

1994-03-08

Denion, Thomas E.

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92 98R, 92100, 92103F, F01B 1900

Patent

active

052918220

ABSTRACT:
A method of making and the product of the method in a diaphragm for use in a pressure regulator, or other similar uses, where leakage around the confined edges of the diaphragm must be avoided. The structure confining the edges of the diaphragm consists of a main housing body having a groove for receiving a rib or the outer periphery of the diaphragm and a secondary housing to clamp the periphery. The central portion of the diaphragm carries a top plate with a bottom groove to receive a rib on the central periphery of the diaphragm and a bottom disc to clamp the inner periphery. Diaphragms are made with a fabric sandwiched between flexible layers of material. This results in a flash edge which may cause wicking and prevents a proper seal in the grooves receiving the ribs. An angled trim on the peripheries allows a proper filling of the grooves and a leak proof seal.

REFERENCES:
patent: 2684829 (1954-07-01), McFarland, Jr.
patent: 4179096 (1979-12-01), Fromfield
patent: 4619436 (1986-10-01), Bonzer et al.
patent: 4705458 (1987-11-01), St. Laurent et al.

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