Gas separation – With means facilitating transportability or handling of...
Patent
1990-12-19
1992-01-14
Hart, Charles
Gas separation
With means facilitating transportability or handling of...
55 97, 553851, 55472, 55DIG3, 134111, 134201, B01D 5000
Patent
active
050807013
ABSTRACT:
A self-contained, portable spot abatement unit (10) facilitates the spot removal or abatement of asbestos material, or other material containing particulate contaminants. The unit includes a portable work chamber (12) having vacuum (VP1, VP2) and filtration (F1F2) means coupled thereto for establishing a negative air pressure therewithin. The unit has overall dimensions that permit easy passage through conventional door openings, yet the work space provided within the work chamber is sufficiently large to allow a worker to perform whatever tasks need to be performed at a desired work site. A first telescoping top frame (20, 52) allows the work chamber to expand in order to contact finished ceilings up to 13 feet from a finished floor. A second telescoping frame (22, 56) used in one embodiment, allows the work space to be further extended, e.g., to pass through an opening (54) in a finished ceiling up to 18 feet from the finished floor. A hand-held collection bag (144) may also be used within the work chamber. The extended work space provides a negative air pressure volume wherein work may be performed from finished floor to a contamination site (i.e., a site where contact with asbestos or similar materials is made). Suitable negative air machines mount beneath the unit and couple the outside air to the sealed work chamber through a manifold so that all air must exit the work chamber through appropriate filters adapted to capture all asbestos or other contaminate fibers.
REFERENCES:
patent: 4682448 (1987-07-01), Healey
patent: 4765352 (1988-08-01), Strieter
patent: 4774974 (1988-10-01), Teter
patent: 4787922 (1988-11-01), Kulitz
patent: 4911191 (1990-03-01), Bain
patent: 4979967 (1990-12-01), Walter et al.
Dibenedetto Thomas
Howard Darrell W.
Sayer Cecil L.
Sherrard Sam J.
Commercial Decontamination, Inc.
Hart Charles
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