Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
1999-01-13
2000-11-07
Look, Edward K.
Expansible chamber devices
Collapsible chamber wall portion
Wall portion formed of flexible material
92103F, 92103SD, F16J 300
Patent
active
06142062&
ABSTRACT:
The present invention provides a diaphragm member for use in certain valve assemblies. Such diaphragm member comprises a generally circular diaphragm having a first predetermined diameter and having a first surface and a second surface. Such generally circular diaphragm is formed from at least one layer of a preselected elastomeric material. Such generally circular diaphragm includes a nonflexing center portion, a generally annular flexure portion extending around an outer periphery of such nonflexing center portion and a non flexing outer portion extending around an outer periphery of such generally annular flexure portion, such non flexing outer portion is engageable with a body portion of such valve assembly. Such diaphragm member further includes a generally circular insert member, having a second predetermined diameter, disposed within the first surface of such nonflexing center portion of such generally circular diaphragm. Such generally circular insert member has a plurality of apertures formed through such generally circular insert member, such plurality of apertures provide a predetermined open area for receiving a predetermined rubber compound for bonding such generally circular insert member to such nonflexing center portion of such generally circular diaphragm.
REFERENCES:
patent: 4295631 (1981-10-01), Allen
patent: 5836571 (1998-11-01), Streitman et al.
Lazo Thomas E.
Look Edward K.
Westinghouse Air Brake Company
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