Filter unit

Details Filter unit Filter unit

1989-02-07

1991-03-12

Cashion, Jr., Merrell C.

Gas separation

With means securing or retaining separating media

Fastening means pierces or penetrates media

55495, 55501, 55509, 55511, 55513, 210483, 428192, B01D 2900, B01D 3900

Patent

active

049990381

ABSTRACT:
The present invention relates to a filter unit having a sheet of filtering material mounted on a first frame and a second frame received within and below the first frame. The second frame is configured such that the filtering material is tightly held between the first and second frames and the filtering material is stretched by the second frame. In accordance with one of the aspects of the present invention, the second frame is provided with ear members. The ear members are sized such that the ears penetrate the filtering material and hold the first frame tightly between the ear members. The ear members reinforce the first frame by the second frame, through a mechanical interconnection of the frames and also, prevent slippage of the filtering material. In accordance with another of the aspects of the present invention, preferably, a coating of rubber covering the second frame further prevents slippage of the filtering material between the frames by insuring a tight fit between the first and second frames and the filtering material.

REFERENCES:
patent: 2981367 (1961-04-01), Sprouse

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