Wedgewire filter and method of manufacture

Details Wedgewire filter and method of manufacture Wedgewire filter and method of manufacture

1989-07-03

1991-11-12

Dawson, Robert A.

Liquid purification or separation

Filter

Movable medium

291638, 29557, 166234, 209393, 210498, B23D 1304

Patent

active

050645366

ABSTRACT:
An improved filter of the type including closely spaced wedgewire windings defining a permanent filter media by allowing liquid flow through the gaps, in which the outer face of the wedgewire strands are ground away to eliminate the radiused corners on each strand, which corners create a small convergent region intermediate adjacent strands of wedgewire tending to trap solids and clog the filter when particles sizes are present in a range tending to wedge in those regions, particularly when gelatinous substances are also present.

REFERENCES:
patent: 1040342 (1912-10-01), Johnson
patent: 2288883 (1942-07-01), Bixby
patent: 3037630 (1962-06-01), Bixby
patent: 3221819 (1965-12-01), Dickinson et al.
patent: 3327865 (1967-06-01), Thompson
patent: 4283278 (1981-08-01), Savage et al.
patent: 4407720 (1983-10-01), Bratten
patent: 4670143 (1987-06-01), Bratten
Catalog No. 148 by Edward E. Johnson, Inc., "Well Screens", Copyright 1947, 210-497.1.

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