Tubular filter element with biasing element and method of making

Details Tubular filter element with biasing element and method of making Tubular filter element with biasing element and method of making

1988-09-26

1989-08-29

Fisher, Richard V.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

2104932, 2104935, 2104972, 55492, 55497, 55498, 55500, 55510, 55521, 55DIG5, 264DIG48, 493941, B01D 2706

Patent

active

048614793

ABSTRACT:
A tubular filter element for liquid filters comprises a perforated support pipe. Disposed around the inside of the support pipe is a tubular filter layer which comprises a folded sheet of filter material. Within each end of the filter element a spring washer is disposed for biasing the end of the tubular filter layer outwardly against the inside of the support pipe. In this pre-biased state, the ends of the filter element are joined to disks by means of a hardenable casting material.

REFERENCES:
patent: 2801751 (1957-08-01), Thomas
patent: 2895174 (1959-07-01), Hockett
patent: 2988227 (1961-06-01), Harms
patent: 4322230 (1982-03-01), Schaen et al.
patent: 4512892 (1985-04-01), Ganzi et al.

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