Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
1990-11-23
1992-05-26
Look, Edward K.
Expansible chamber devices
Collapsible chamber wall portion
Wall portion formed of flexible material
F16J 300
Patent
active
051157241
ABSTRACT:
The present invention is a diaphragm seal for an instrument having a first coupling member with a cavity in communication with the instrument, a pressure-responsive diaphragm attached within the cavity of the first coupling member, an adapter ring fitted to the first coupling member, and a second coupling member connected to the first coupling member. The adapter ring is a rigid cylindrical member having an internal shoulder extending inwardly of the cylindrical member at the end opposite the diaphragm. The adapter ring has a sleeve fitted within the cylindrical member so as to overlie the internal shoulder. The second coupling member has an internal area communicating with the interior of the adapter ring. The adapter ring is interposed between the first and second coupling members. The second coupling member has a lining surrounding the internal area. This lining is in sealed relationship with the sleeve of the adapter ring. The lining and the sleeve are composed of a synthetic resin polymeric material.
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patent: 2679760 (1954-06-01), Harland et al.
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patent: 3645139 (1972-02-01), Zavoda
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patent: 4852466 (1989-08-01), Freeman et al.
patent: 4885983 (1989-12-01), Zavoda
The Seals Book, Machine Design c1961 pp. 98-99.
Look Edward K.
Lopez F. Daniel
Zavoda Manufacturing Co., Inc.
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