Indexing mechanism

Details Indexing mechanism Indexing mechanism

1975-09-22

1977-10-18

Adee, John

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Maintaining stream pressure or flow

55352, 55354, 210387, B01D 2902

Patent

active

040545210

ABSTRACT:
The invention relates to a continuous and controlled filter device that filters gases and liquids while maintaining a low differential pressure across the filter element. The device automatically advances clean filter medium into the filter seat or window when the differential pressure rises to a predetermined level replacing dirty filter medium with clean filter medium. The advance of the filter medium is effected by a fluid pressure operated expansible device cooperating with an indexing device for positioning the filter medium as a function of the pressure differential extending thereacross. The indexing device may include a ratchet structure for positively positioning preselected portions of the filter medium across the flow passage through which the fluid being filtered is passed.

REFERENCES:
patent: 3332215 (1967-07-01), Revell
patent: 3379206 (1968-04-01), Whiting
patent: 3465707 (1969-09-01), Kashiwaba
patent: 3552098 (1971-01-01), Cochran
patent: 3855126 (1974-12-01), Smith

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