Filter cap

Details Filter cap Filter cap

1994-08-31

1996-08-27

Bushey, C. Scott

Gas separation

With means securing or retaining separating media

Hinged or pivoted retainer or clamp on backing frame or in...

55502, 55508, B01D 4600

Patent

active

055497233

ABSTRACT:
The invention disclosed here is a filter cap device for releasably mounting large filters to a barrier wall. The filter cap has an oversize radius overlapping a filter opening in the wall. A plurality of hand-operated outboard locking devices releasably connect the cap to the wall. Likewise, a plurality of hand-operated inboard locking devices releasably connect the cap to the filter. The cap has a central opening which defines an air passageway from the filter through the wall. When it is desired to replace a filter, the filter cap and filter can be removed from the opening as a single unit, followed by disconnecting the used filter from the filter cap. A replacement filter is then attached to the cap and the entire unit is reinstalled.

REFERENCES:
patent: 1968016 (1934-07-01), Dabadie
patent: 3377783 (1968-04-01), Young
patent: 3830043 (1974-08-01), Nielsen et al.
patent: 3951627 (1976-04-01), Barr, Jr. et al.
patent: 4089664 (1978-05-01), Noland
patent: 4323376 (1982-04-01), Rosenquest
patent: 4345924 (1982-08-01), Margraf
patent: 4415343 (1983-11-01), Margraf
patent: 4504288 (1985-03-01), Kreft
patent: 4775469 (1988-10-01), Zimmerly
patent: 4948504 (1990-08-01), Kierdorf et al.
Daniel J. Terry, Sketches of Prior Art System, Figs. 1-3.

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