Vehicular hydraulic system with dual relief valve
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United States of America Patent
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-
Aug 3, 2010
Grant Date -
Mar 20, 2008
app pub date -
Sep 19, 2007
filing date -
Sep 20, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicular hydraulic system having a hydraulic pump and first and second hydraulic applications arranged in series. A dual relief valve defines first and second flow channels, a passageway and a bypass port. The first flow channel is disposed between the hydraulic pump and the first hydraulic application and the second flow channel is disposed between the first hydraulic application and the second hydraulic application. A first valve member controls fluid flow through the passageway and allows fluid flow from the first to the second flow channel through the passageway when fluid pressure within the first flow channel exceeds a first threshold pressure. A second valve member controls fluid flow through the bypass port and allows fluid flow from the second flow channel to a return line through the bypass port when fluid pressure within the second flow channel exceeds a second threshold pressure.
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Family
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Cited Art Landscape
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