Pressure relief valve for filter assembly

Details Pressure relief valve for filter assembly Pressure relief valve for filter assembly

2006-10-10

2008-10-14

Cecil, Terry K (Department: 1797)

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid pressure responsive by-pass

C210S443000, C210S453000, C210S493300, C210SDIG017

Reexamination Certificate

active

07435341

ABSTRACT:
An oil filter assembly includes a pressure relief valve adaptable to wide variety of environments while maintaining ease of assembly and manufacture. The pressure relief valve of this invention also occupies a minimal amount of space within the filter assembly as compared to conventional valve arrangements. In the preferred embodiment, the three-piece filter system comprises a base, a deep pocket filtering media, and a housing shell. The unitary filtering media and cap member are formed as a replaceable component that seats into the housing shell without a center tube or other outside support. When the housing shell is threaded onto the base, the cap member is sandwiched between a ledge on the shell and a seal on the base. The pressure relief valve allows fluid to continue to flow in the event the filter element becomes clogged whereby the valve provides ease of assembly, reduced cost, and reduced valve size.

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Office Action from USPTO dated Feb. 22, 2008 for Serial No. 29/265,352.

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