Air filtering apparatus

Details Air filtering apparatus Air filtering apparatus

1974-08-16

1976-02-03

Lutter, Frank W.

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

55472, 55485, 55385A, 55486, 55DIG34, 116 70, 116DIG25, 340239F, 340240, 417313, B01D 4610

Patent

active

039362841

ABSTRACT:
An air filtering apparatus is disclosed utilizing a prefilter at the inlet side and a HEPA type filter at the outlet side. The interior chamber of the apparatus is divided into two subchambers with a blower forceably pumping air from the inlet chamber to the outlet chamber. A first indicator means is responsive to a predetermined decrease in pressure in the inlet chamber for indicating when the prefilter needs changing, and a second indicator means is responsive to a predetermined increase in pressure in the outlet chamber indicating when the HEPA type filter requires changing. A plurality of the apparatuses may be utilized in an air filtering system controlled remotely by radio transmitting and receiving devices.

REFERENCES:
patent: 2065970 (1936-12-01), Hartzell
patent: 2723388 (1955-11-01), Jacobs
patent: 3172743 (1965-03-01), Kowalewski
patent: 3363539 (1968-01-01), Taylor et al.
patent: 3626545 (1971-12-01), Sparrow
patent: 3812370 (1974-05-01), LaViolette

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