Liquid filter with bypass passage

Details Liquid filter with bypass passage Liquid filter with bypass passage

1989-05-08

1991-08-06

Dawson, Robert A.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid pressure responsive by-pass

210136, 2104165, 210440, 210443, 210456, B01D 2710

Patent

active

050375393

ABSTRACT:
A liquid filter for filtering the lubricating oil of an internal combustion engine includes a bypass passage permitting liquid to flow from the outlet to the inlet in a direction opposite to normal flow through the filter when the engine is initially filled with oil by a pressure lubrication fill process. When the engine is first started, a valve responds to normal engine oil pressure to close the bypass passage.

REFERENCES:
patent: 3231089 (1966-01-01), Thornton
patent: 3332554 (1967-07-01), Humbert, Jr.
patent: 3467256 (1969-09-01), Humbert, Jr. et al.
patent: 3557957 (1971-01-01), Baldwin
patent: 3695437 (1972-10-01), Shaltis
patent: 3726403 (1973-04-01), Shaltis
patent: 3774764 (1973-11-01), Baldwin
patent: 3957640 (1976-05-01), Stack
patent: 3984318 (1976-10-01), Bumb
patent: 4144168 (1979-03-01), Thornton
patent: 4755289 (1988-07-01), Villani

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