Unhooking dirty filter alarm

Details Unhooking dirty filter alarm Unhooking dirty filter alarm

1981-03-26

1982-04-20

Adee, John

Liquid purification or separation

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

Fluid pressure responsive

116 70, 210 91, B01D 2710

Patent

active

043258247

ABSTRACT:
An unhooking dirty filter alarm for a filter comprising a filter head, canister and tubular filter element. The filter head has a bypass valve therein. Linkages to the outside of the filter element rotate a pointer indicating whether or not the filter element has been bypassed. The linkages are arranged not to restore the pointer after the bypassing condition has abated to thereby latch the information that the filter was bypassed.

REFERENCES:
patent: 3150633 (1964-09-01), Holl
patent: 3410411 (1968-11-01), Dence
patent: 3487929 (1970-01-01), Samale et al.
patent: 3491077 (1976-03-01), Moore
patent: 3950248 (1976-04-01), Brown et al.

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