Negative pressure filtration device

Details Negative pressure filtration device Negative pressure filtration device

1989-12-13

1992-03-17

Hart, Charles

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

553852, 55356, 55500, B01D 4600

Patent

active

050964747

ABSTRACT:
A negative pressure filtration device is used in conjunction with a containment enclosure for the removal of hazardous material such as asbestos insulation surrounding pipes in habitable buildings. The inventive negative pressure filtration device generates a negative pressure within the containment enclosure, which negative pressure is quantitatively adjustable and capable of being continuously monitored by the user. Advantageously, the negative pressure filtration device is small, lightweight, portable, battery-operated and reliable, for use in a wide variety of hazardous material removal scenarios. The portability and versatility of the negative pressure filtration device is achieved through the use of operational vacuum pressures and air flow volumes much smaller than those of known systems.

REFERENCES:
patent: 3924605 (1975-12-01), Weinman et al.
patent: 4154251 (1979-05-01), Doyel
patent: 4704951 (1987-11-01), Pruchon
patent: 4732592 (1988-03-01), Spengler
patent: 4784675 (1988-11-01), Leber et al.
patent: 4786295 (1988-11-01), Newman
patent: 4865634 (1989-09-01), Griffis

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