Filter design

Details Filter design Filter design

1991-06-20

1992-04-14

Dawson, Robert A.

Liquid purification or separation

Diverse distinct separators

Including a filter

2104935, 2104971, 21049701, B01D 2706

Patent

active

051045346

ABSTRACT:
The invention is a filter including a housing within which are positioned annular, concentrically mounted filter elements that are folded in opposite helical pleats so that the inside pleats of the outer filter element touch the outer pleats of the inner filter element in a crisscross fashion. Being positioned in this manner, the filter elements support each other and form channels between them through which filtered material passes before exiting the filter. The invention also including a housing within which is positioned pairs of annular filter elements consecutively numbered with capped ends for selective fluid passage between the inner surface of the odd elements and the outer surface of the even elements.

REFERENCES:
patent: 2627350 (1953-02-01), Wicks
patent: 4909937 (1990-03-01), Hoffman et al.

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