Oil filter apparatus

Details Oil filter apparatus Oil filter apparatus

1981-01-19

1981-12-08

Therkorn, Ernest G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Fluid pressure responsive

210130, 210136, 210168, 210180, B01D 2710

Patent

active

043046630

ABSTRACT:
An electronic oil filter apparatus comprising an oil filter (20) and a bypass valve (22). Pressure build up within the filter (20) caused by clogging of the filter results in opening the bypass valve (22) allowing dirty oil to flow around the filter. When the valve is actuated in response to excess pressure build up, a low voltage switching device allows current to flow to a signal means (74) thereby indicating a need to change the filter.

REFERENCES:
patent: 2536663 (1951-01-01), Schaer
patent: 2776056 (1957-01-01), Douglas
patent: 3425511 (1969-02-01), Severin
patent: 3474906 (1969-10-01), Tennis
patent: 3644915 (1972-02-01), McBurnett
patent: 4189351 (1980-02-01), Engel
patent: 4205703 (1980-06-01), Silverwater
patent: 4246109 (1981-01-01), Manders

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