Cylindrical filters

Details Cylindrical filters Cylindrical filters

1996-06-05

1999-01-26

Walker, W. L.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

2104932, 2104935, 21049701, 428 3691, 428 59, B01D 2907

Patent

active

058634320

ABSTRACT:
A cylindrical filter is formed from a sheet of filter material which includes two connected layers of filter media. Opposed edges of the sheet are joined to form the cylinder by separating the media adjacent the edges and then sealing together the first of the separated layers followed by sealing the second of the separated layers. The two seals are spaced inwardly of the edges and are spaced from one another. In this way, failure of one seal does not result in failure of the cylindrical filter.

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patent: 4963258 (1990-10-01), Yagishita
patent: 5015377 (1991-05-01), Silvera

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