Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid pressure responsive by-pass
Patent
1995-06-12
1998-01-27
Savage, Matthew O.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid pressure responsive by-pass
210136, 210232, 210443, 210450, 210453, B01D 35147, B01D 35153
Patent
active
057118728
ABSTRACT:
A reusable oil filter assembly adapted for use in filtering the lubricating oil of an engine configured to receive an oil filter, including a filter housing having an open end and a closed end, a filter mount disposed between the filter housing and the engine for receiving the unfiltered oil from the engine and returning filtered oil to the engine. The filter mount includes a first plate, a second plate, and an anti-drain back seal disposed between the first plate and the second plate. The anti-drain back seal prevents both the oil disposed in the engine from flowing out into the filter assembly and the oil disposed in the filter assembly from flowing into the engine when the engine is turned off. The first plate, the second plate and the anti-drain back seal are
fittingly, rather than integrally, mated together, thus facilitating service, repair and replacement of the assembly. A reusable filter cartridge registers with the filter mount inside the chamber to receive from the engine unfiltered oil from regions exterior of the cartridge and to return to the engine filtered oil from regions interior of the cartridge.
REFERENCES:
patent: 2358933 (1944-09-01), Lance
patent: 2633146 (1953-03-01), Wittt
patent: 3473666 (1969-10-01), Humbert, Jr.
patent: 3807561 (1974-04-01), Cullis
patent: 4622136 (1986-11-01), Karcey
patent: 4717472 (1988-01-01), Oberg
patent: 5066391 (1991-11-01), Faria
patent: 5548893 (1996-08-01), Koelfgen
Jones John A.
Kanovitz Robert
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