Gas separation – Combined or convertible – In environmental air enclosure
Patent
1991-03-25
1991-12-24
Hart, Charles
Gas separation
Combined or convertible
In environmental air enclosure
55500, 454 58, B01D 4610
Patent
active
050748971
ABSTRACT:
A self contained portable negative pressure control system enclosure for protection from airborne asbestos particles and the like from a work space includes an enclosure formed of portable rigid door frames having spring doors and a weighted transom closure within that communicate with the work space to define multiple non-sealed decontamination chambers. The enclosure is used with a room divider or in an access doorway to the work space which is maintained in a negative air pressure by exhaust blowers equipped with HEPA filters.
REFERENCES:
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patent: H785 (1990-06-01), Merritt
patent: 4312645 (1982-01-01), Mavros et al.
patent: 4604111 (1986-08-01), Natale
patent: 4801312 (1989-01-01), Mateson
patent: 4804392 (1989-02-01), Spengler
patent: 4922806 (1990-05-01), Newman et al.
patent: 5009685 (1991-04-01), Wilson et al.
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