Filter system

Details Filter system Filter system

1995-02-02

1997-01-14

Chiesa, Richard L.

Gas separation: apparatus

Electric field separation apparatus

And serially arranged nonelectrical separator

15347, 15353, 55323, 55528, 55DIG39, 95 69, 96 61, 96 63, 96 68, 96 69, B03C 3011

Patent

active

055934790

ABSTRACT:
A vacuum cleaner having a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary mechanism driven by the motor for creating a vacuum in the chamber, an outlet for exhausting air from the chamber, which air flows in a selected path from the air inlet, through the chamber and out the air exhaust outlet and a disposable porous sheet filter layer in the chamber for removing solids particles from the air. The vacuum cleaner also has a fiber filter between the filter layer and the motor where the fiber filter has an electrically charged non-woven material for removing very fine air particles in the chamber, intersecting the air path and generally coterminous with the disposable filter layer.

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4 page ad by 3M, 1990 "Some of our Best Ideas are Collecting Dust".

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