Filtration apparatus having stress relief groove

Details Filtration apparatus having stress relief groove Filtration apparatus having stress relief groove

1992-02-28

1993-12-14

Lithgow, Thomas M.

Liquid purification or separation

With repair or assembling means

21032175, 21032184, 210446, 210455, 55511, 156 731, B01D 2500, B01D 2708

Patent

active

052699170

ABSTRACT:
A filtration apparatus formed by ultrasonically welding a top section to a base section with a filtration membrane interposed there between. One of the top section or base section has a plurality of radially extending energy directors and the other of the top section or base section has a circumferentially extending energy director in contact with the radially extending energy directors where ultrasonic welding is effected. The groove cosiverts some of the peeling load into texisle load.

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patent: 5108709 (1992-04-01), Bugar

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