Safety device for an enclosure door

Details Safety device for an enclosure door Safety device for an enclosure door

1994-06-06

1996-04-16

Lindsey, Rodney M.

Closure fasteners

Bolts

Emergency operating means

292DIG32, 292DIG65, E05B 6510

Patent

active

055075398

ABSTRACT:
A device (10) for preventing the opening of a door (52) into an enclosed space (50) if the atmosphere in the space is hazardous. A sensor or sensors (31) monitor the atmosphere in the space and provide a controller (32) with a signal proportional to atmospheric conditions. If the controller determines that a hazardous condition exists, it produces a signal that actuates a lock that prevents the door from being opened. In a preferred embodiment, the device prevents the opening of a door of a transport container if the proportion of oxygen in the atmosphere of the interior of the container is less than a predetermined value.

REFERENCES:
patent: 3352585 (1967-11-01), Crosswell et al.
patent: 3871694 (1975-03-01), White
patent: 3883164 (1975-05-01), Galbreath et al.
patent: 4164095 (1979-08-01), Musacchia
patent: 4829774 (1989-05-01), Wassibauer et al.
patent: 4866963 (1989-09-01), Leininger
patent: 5072973 (1991-12-01), Gudgel et al.
patent: 5332547 (1994-07-01), Olson et al.
patent: 5355781 (1994-10-01), Liston et al.

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