Liquid purification or separation – Casing divided by membrane into sections having inlet – Each section having inlet
Patent
1991-07-19
1992-08-25
Dawson, Robert A.
Liquid purification or separation
Casing divided by membrane into sections having inlet
Each section having inlet
21032184, 210406, 2104161, 210455, 422 99, 422101, 604406, B01D 6300
Patent
active
051416395
ABSTRACT:
A vacuum filter assembly for filtering a feed liquid includes a filter membrane held in a cover attachable to the filtrate container. The cover is formed with a feed liquid nipple on one side of the filter membrane, a filtrate outlet tube on the other side of the filter body, and a vacuum port. A portion of the surface of the membrane is non-wettable by the feed liquid to facilitate restarting the filtration if the filtration is interrupted. Also, the vacuum port includes a vacuum tube covered at its end by another membrane having pores permeable by air but not by the feed liquid, for fixing the maximum level of the filtrate within the filtrate container.
REFERENCES:
patent: 2879207 (1959-03-01), Poitras
patent: 4523934 (1985-06-01), Joshua
patent: 4614585 (1986-09-01), Mehra et al.
patent: 4673501 (1987-06-01), Wells et al.
Kraus Menahem A.
Vitkuske Dan
Yonath Jacob
Dawson Robert A.
Fortuna Ana M.
Gelman Sciences Inc.
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