Claims
- 1. A valve construction comprising a housing, a wall movable in said housing so as to define a chamber which is variable in volume, said wall including therein a port affording flow through said wall, a valve member movable relative to said port between open and closed positions, said valve member being normally retained in said closed position during movement of said wall in the direction minimizing the volume of said chamber, a stationary member located for engagement with said valve member so as to initially displace said valve member from said closed position in response to wall movement minmizing the volume of said chamber, whereby to initially open said port, and spring means engaged with said valve member and compressed in response to movement of said valve member in the direction minimizing the volume of said chamber, said spring means being operable, after initial opening of said port, to displace said valve member to said open position, whereby to fully open said port.
RELATED APPLICATIONS
This is a division of Application Ser. No. 410,497 filed Aug. 23, 1982, now U.S. Pat. No. 4,539,949, which, in turn, is a continuation in-part of Application Ser. No. 324,145, filed Nov. 23, 1981, now U.S. Pat. No. 4,383,504, and of Application Serial No. 314,224, filed Oct. 23, 1983, now U.S. Pat. No. 4,473,340, and of Application Ser. No. 309,558 filed Oct. 8, 1981, now U.S. Pat. No. 4,381,741.
US Referenced Citations (5)
Divisions (1)
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Number |
Date |
Country |
Parent |
410497 |
Aug 1982 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
324145 |
Nov 1981 |
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