Valves and valve actuation – Reciprocating valve – Diaphragm
Patent
1997-07-18
1998-11-17
Lee, Kevin
Valves and valve actuation
Reciprocating valve
Diaphragm
251368, 92 99, F16K 31126
Patent
active
058365710
ABSTRACT:
The present invention provides a combination disc diaphragm assembly which comprises a disc portion having a first configuration and includes a round center portion having a first diameter and a first thickness. It further includes a round outer portion connected to and extending outwardly from an outer periphery of such center portion adjacent a bottom surface. The outer portion has a second diameter which is greater than such first diameter. The outer portion has a second thickness which is less than the first thickness. The disc also has a domed shaped cavity formed in the bottom surface and having a first radius. There is a diaphragm member having a second configuration and a third diameter which is greater than the second diameter of the disc. The diaphragm has a first side with a dome shaped projection disposed on a center portion. The domed shaped projection has a second radius. The first side of the diaphragm has a generally flat surface adjacent the dome shaped center. The diaphragm also has a second side having a dome shaped cavity formed in a center portion. The domed shaped cavity has a third radius. There is further a connection to the bottom surface of the disc portion and to a surface of the dome shaped projection and flat surface adjacent the domed shaped projection of the first side of the diaphragm for bonding the first side of the diaphragm member to the bottom portion of the disc portion.
REFERENCES:
patent: 2916255 (1959-12-01), Koehler
patent: 3771907 (1973-11-01), Neumann et al.
patent: 4375882 (1983-03-01), Schreiber, Jr.
patent: 5490659 (1996-02-01), Whiteside
Kushnir, Jr. Lawrence M.
Markos Ronald M.
Streitman Lawrence R.
Lee Kevin
Westinghouse Air Brake Company
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