Liquid purification or separation – Filter – With pump – gas pressure – or suction source
Patent
1997-11-20
1999-02-09
Lithgow, Thomas M.
Liquid purification or separation
Filter
With pump, gas pressure, or suction source
210117, 210136, 210436, 2104161, B01D 3501, B01D 3526
Patent
active
058689311
ABSTRACT:
A fuel filter assembly employs a hand primer and a disposable filter cartridge mounted to a filter base. The filter cartridge and filter base define a fuel flow path through the filter assembly. The filter base includes a sump for receiving fuel that has traversed the filter element. The hand primer includes a deformable member composed of an elastomeric material that cooperates with a base plate to define a cavity. The base plate is disposed intermediate the deformable member and the base sump to separate the cavity from the fuel flow path. The base plate has a plurality of orifices to selectively provide fluid communication between the cavity and the sump. A discharge passage in fluid communication with cavity provides means for discharging air from the fuel filter assembly.
REFERENCES:
patent: 3389801 (1968-06-01), Sieger
patent: 4437986 (1984-03-01), Hutchins
patent: 4470301 (1984-09-01), Hutchins
patent: 4500425 (1985-02-01), Thornton
patent: 4515690 (1985-05-01), Yasuhara
patent: 4539108 (1985-09-01), Izutani
patent: 4956081 (1990-09-01), Hodgkins
patent: 5207898 (1993-05-01), Hodgkins
patent: 5362392 (1994-11-01), Jensen
patent: 5578221 (1996-11-01), Janik
patent: 5643446 (1997-07-01), Clausen
Janik Leon P.
Williams Michael J.
Lithgow Thomas M.
Stanadyne Automotive Corp.
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