Method for sealing the edge of a filter medium to a filter assem

Details Method for sealing the edge of a filter medium to a filter assem Method for sealing the edge of a filter medium to a filter assem

1994-06-10

1996-04-30

Drodge, Joseph W.

Liquid purification or separation

With repair or assembling means

55497, 55521, 156 731, 2104931, B01D 2907

Patent

active

055121721

ABSTRACT:
Improved filter assemblies are provided having a pleated filter medium attached to a support frame utilizing an improved manufacturing method employing a welding process to seal the pleated edges of the filter medium to an inwardly protruding sealing means provided on the frame around the inside perimeter thereof, forming a final filter assembly exhibiting an essentially leak-proof edge seal.

REFERENCES:
patent: 1832281 (1931-11-01), Davies
patent: 2135863 (1938-11-01), Walker
patent: 3392846 (1968-07-01), Getzin
patent: 3397518 (1968-08-01), Rogers
patent: 3815754 (1974-06-01), Rosenberg
patent: 3873288 (1975-03-01), Wachter et al.
patent: 4169059 (1979-09-01), Storms
patent: 5167740 (1992-12-01), Michaelis et al.
patent: 5215609 (1993-06-01), Sanders
patent: 5376270 (1994-12-01), Spearman
International Search Report Dated Nov. 7, 1995 for PCT App. No. PCT/CA95/00345.

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