Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
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.
Alsobrooks Daniel E.
Codling Daryl O.
Finkbeiner Steven P.
Denion Thomas E.
Orbital Walbro Corporation
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