Gas separation – With separating media bypass or system gas pressure relief – Pressure relief means to or from atmosphere
Reexamination Certificate
2005-09-14
2009-08-11
Griffin, Walter D (Department: 1797)
Gas separation
With separating media bypass or system gas pressure relief
Pressure relief means to or from atmosphere
C210S188000, C210S436000, C210S438000
Reexamination Certificate
active
07572306
ABSTRACT:
A filter system includes a filter configured to regulate fuel pressure as well as automatically vent air from the filter. A pressure regulator valve is positioned in the top of a standpipe of the filter. The filter includes a filter cartridge with top and bottom end caps. The top end cap of the filter cartridge has a hole with radial sealing gasket, which seals against the top of the standpipe to prohibit flow from bypassing the filter cartridge. This arrangement exposes the regulator valve to the fuel and/or air at the top of the filter housing. Pressure in the housing opens the valve, allowing air and/or fuel to be vented through the standpipe, and back to the fuel tank.
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DeWeese Clinton T.
England Ricky
Hawkins Charles W.
Wieczorek Mark T.
Cummins Filtration IP Inc.
Griffin Walter D
Hamre Schumann Mueller & Larson P.C.
Orlando Amber
Schelkopf J. Bruce
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