Oil filter with bypass valve

Details Oil filter with bypass valve Oil filter with bypass valve

2011-07-19

2011-07-19

Smith, Duane (Department: 1776)

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid pressure responsive by-pass

C210S090000, C210S094000, C210S167020, C210S172100, C210S172200, C210S257200, C210S416500, C210S430000, C210S436000, C210S472000, C137S557000, C137S559000

Reexamination Certificate

active

07981279

ABSTRACT:
An oil filter assembly has a bypass valve and a cover formed with an orifice. In order to provide a simple contamination indicator for the oil filter, there is provided a deflection device that deflects an oil jet emerging through the orifice when the bypass valve is open on the outside of the cover. The oil jet can thus be deflected into a region observable through a filling orifice. A contaminated oil filter can therefore be reliably detected on occasion of a quick visual check, by observing the deflected oil jet.

REFERENCES:
patent: 3464556 (1969-09-01), Cullen
patent: 3501005 (1970-03-01), Thomas et al.
patent: 3545616 (1970-12-01), Aspinwall et al.
patent: 3786920 (1974-01-01), Raymond
patent: 4853125 (1989-08-01), Hanabusa
patent: 2002/0125178 (2002-09-01), Smith et al.
patent: 2006/0124099 (2006-06-01), Richards

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