Liquid purification or separation – Processes – Separating
Patent
1993-10-15
1995-08-15
Dawson, Robert A.
Liquid purification or separation
Processes
Separating
210452, 210455, B01D 2927
Patent
active
054416507
ABSTRACT:
A method and apparatus for filtering a material that flows through a filter housing having a housing chamber, a material inlet port, a material outlet port, and an annular shoulder disposed in the housing chamber. A non-sealing filter element having a fluid pervious filter bag fixed to a non-sealing shape retaining filter collar assembly including an annular sleeve, an outturned annular flange, and a fluid pervious annular filter element disposed on the annular shoulder of the housing chamber. The fluid pervious annular filter element may be a separate element interposing the outturned annular flange of the non-sealing shape retaining filter collar assembly and the annular shoulder of the filter housing to filter material not filtered by the fluid pervious filter bag. Alternatively, the outturned annular flange and the annular sleeve of the non-sealing shape retaining filter collar assembly may be comprised of a fluid pervious material to filter material not filtered by the fluid pervious filter bag.
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Dawson Robert A.
Le Sac Corporation
Walker W. L.
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