High surface to volume structure and method of generating same

Details High surface to volume structure and method of generating same High surface to volume structure and method of generating same

1975-09-02

1977-12-13

Spear, Jr., Frank A.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210351, 210493R, B01D 2902

Patent

active

040627730

ABSTRACT:
A filter assembly and element are disclosed herein for use in filtering biological fluids. The assembly includes a variable volume housing within which is positioned a cylindrically-shaped, high surface area filter. During operation, the housing volume is changed, but the surface area available for filtration remains substantially constant. This permits the filter to be operated with low priming volumes and also to effectively reduce gas bubble entrapment in the filter.
A method of making the element and a method for operating the filter assembly are also disclosed.

REFERENCES:
patent: 1489519 (1924-04-01), Chateau
patent: 2186440 (1940-01-01), Williams
patent: 2330625 (1943-09-01), Reppmann
patent: 3713875 (1973-01-01), Beyer et al.

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