Air pressurizers/conditioners especially for work cabs in a poll

Details Air pressurizers/conditioners especially for work cabs in a poll Air pressurizers/conditioners especially for work cabs in a poll

1983-03-03

1985-01-08

Wayner, William E.

Automatic temperature and humidity regulation

Thermostatic

Expanding solid

98 15, 55274, 236 94, B60H 300

Patent

active

044921519

ABSTRACT:
The operative within a work cab is protected from a polluted atmosphere by provision on the cab of an air pressurizer/conditioner which comprises an air treatment unit and a turbo-fan assembly. The air treatment unit (12) takes the general form of a parallelepipedic box having on one of its front faces a suction orifice 10a extending over the greater part of this face to allow access to the front face of the coarse filter element (15) and to the front face of the fine filter element (16), these said faces being attached mechanically and without a leak to an intermediate leak-proof frame. The turbo-fan assembly (19) is located inside the box downstream of the filter elements (15, 16 and 17) so that the air passes through the said filter elements as a result of suction and is delivered purified into the working cab (11) through a diffuser (24). A pressurizer is provided with a pressurization monitoring device and a toxicity detector (32) for the air forced into the cab.

REFERENCES:
patent: 2267824 (1941-12-01), Griffith
patent: 3657992 (1972-04-01), Minnick, Jr.
patent: 3726104 (1973-04-01), Howland
patent: 3766844 (1973-10-01), Donnelly et al.
patent: 3771365 (1973-11-01), Schempp
patent: 3868896 (1975-03-01), Doll et al.
patent: 4120527 (1978-10-01), Lawrence

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