Fuel filter assembly with flow restriction valve

Details Fuel filter assembly with flow restriction valve Fuel filter assembly with flow restriction valve

2007-10-09

2010-12-21

Menon, Krishnan S (Department: 1797)

Liquid purification or separation

With repair or assembling means

C210S235000, C210S429000, C210S430000, C210S437000

Reexamination Certificate

active

07854839

ABSTRACT:
A “no filter, no run” filtration system that is designed to verify that an appropriate filter cartridge is installed. A flow control valve is provided on a standpipe to control the flow of fuel into the standpipe. The valve has a component that has a first position at which any flow through the flow passage past the valve is insufficient to permit engine operation, and a second position at which a greater amount of flow through the flow passage is permitted by the valve in an amount sufficient to permit engine operation, and the component rotates about the longitudinal axis when it moves from the first position to the second position and from the second position to the first position.

REFERENCES:
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patent: 6554139 (2003-04-01), Maxwell et al.
patent: 6884349 (2005-04-01), Jiang
patent: 2007/0084432 (2007-04-01), Jensen et al.
U.S. Appl. No. 11/854,019, filed Sep. 12, 2007, title: Filtration System With A Variable Restriction Orifice, inventor: Forrest et al., 27 pages.
U.S. Appl. No. 11/935,619, filed Nov. 6, 2007, title: Fuel Filter Assembly With Flow Restriction Sleeve, inventor: Bagci et al., 25 pages.
International Search Report of PCT/US2008/070744, dated Jan. 5, 2009.
Written Opinion of the International Searching Authority of PCT/US2008/070744, dated Jan. 5, 2009.

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