Apparatus for ventilating controlled areas

Details Apparatus for ventilating controlled areas Apparatus for ventilating controlled areas

1989-01-03

1990-03-06

Joyce, Harold

981154, F24F 708

Patent

active

049055780

ABSTRACT:
The apparatus includes a device adapted for removing contaminated air from a controlled area, cleansing this air using suitable filtration devices, and returning air having a safe level of contaminants mixed with a portion of fresh air or solely fresh air to the controlled area. The apparatus further includes barrier means for preventing contaminants from exiting the controlled area except through the air removal device which can be located either inside or outside of the controlled area.

REFERENCES:
patent: 1858024 (1932-05-01), Moore
patent: 2898836 (1959-08-01), Lockheed
patent: 3107974 (1963-10-01), Potapenko
patent: 3211075 (1965-10-01), Robson
patent: 3402654 (1968-09-01), Berst
patent: 4485729 (1984-12-01), Crittenden et al.
patent: 4604111 (1986-08-01), Natale
patent: 4817864 (1989-04-01), Payne

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