Easy-to-open, pressure-resistant door assembly

Details Easy-to-open, pressure-resistant door assembly Easy-to-open, pressure-resistant door assembly

1981-02-09

1983-06-21

Downey, Kenneth

Movable or removable closures

Mounted for multidirectional or oblique movement

Swings on plural axes; e.g., pivotal link arms

49135, 49153, 49390, 49392, 98 50, E05D 1528

Patent

active

043887791

ABSTRACT:
Between regions of different air pressure, a door pivots on an axis located a substantial distance from the nearest edge; this edge moves inwardly as the door pivots about the door axis in a first phase of opening movement to relieve the difference in pressure on opposite sides of the door; pivot links then carry the door about a second axis, parallel to the first axis, in a second phase movement which moves the entire door outwardly to the open position.

REFERENCES:
patent: 1478303 (1923-12-01), Snyder
patent: 3122799 (1964-03-01), Lunde
patent: 3953940 (1976-05-01), Zaslow
patent: 4055024 (1977-10-01), Frank

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