Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid pressure responsive by-pass
Patent
1994-03-04
1995-05-02
Savage, Matthew O.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid pressure responsive by-pass
210136, 210223, 210232, 210444, 210450, 210453, 210DIG17, B01D 2710
Patent
active
054116597
ABSTRACT:
A reusable liquid filtering system and a disposable liquid filter used in the liquid filtering system are provided for use with an internal combustion engine or pump. The liquid filter includes first and second end members and a liquid bypass valve is connected to and projects outwardly from the first end member whereby excessive oil pressure will result in opening of the bypass valve so that an emergency oil flow bypass is thereby provided. The disposable liquid filter is removably positioned within a container of the reusable liquid filtering system. A base is removably connected to the engine or pump and to an open end of the container for allowing removal and replacement of the liquid filter and for allowing neat and spill-free drainage of oil from the container when the base and the container have been removed from the engine or pump and when the base has been removed from the container.
REFERENCES:
patent: 3036711 (1962-05-01), Wilhelm
patent: 3305095 (1967-02-01), Hathaway
patent: 3333703 (1967-08-01), Scavuzzo et al.
patent: 3984318 (1976-10-01), Bumb
patent: 4067810 (1978-01-01), Sullivan
patent: 4622136 (1986-11-01), Karcey
patent: 5066391 (1991-11-01), Faria
Kettlestrings Donald A.
Savage Matthew O.
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