Oil filter with multiple function valve

Details Oil filter with multiple function valve Oil filter with multiple function valve

1988-07-25

1989-10-10

Cintins, Ivars

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid pressure responsive by-pass

210138, 210440, B01D 2710

Patent

active

048729760

ABSTRACT:
An elastomeric valve member coacts with a valve seat and an apertured plate to control the flow of oil between the inlet and outlet of an oil filter for an internal combustion engine. When the engine is shut down, the valve member seals against both the valve seat and the plate to hold oil in the filter and prevent such oil from returning to the crankcase via the inlet. Under normal running conditions, the valve member unseals with respect to the plate to permit oil to flow between the inlet and outlet by way of the filter element of the filter. If the pressure differential between the inlet and the outlet exceeds a predetermined value, the valve member unseals with respect to the valve seat to enable the oil to bypass the filter element and to flow directly from the inlet to the outlet.

REFERENCES:
patent: 2995249 (1961-08-01), Boewe et al.
patent: 3036711 (1962-05-01), Wilhelm
patent: 3231089 (1966-01-01), Thornton
patent: 4127484 (1978-11-01), Walulik et al.

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