Airtight door assembly

Details Airtight door assembly Airtight door assembly

1986-12-23

1988-02-02

Kannan, Philip C.

Movable or removable closures

Closure seal; e.g., striker gasket or weatherstrip

Inflatable or fluid pressure responsive

49 14, 49 61, 49394, E06B 716, E05C 1900

Patent

active

047221518

ABSTRACT:
There is provided a new and useful airtight door assembly comprising a door; an inflatable seal disposed around the perimeter of the door and including means for connecting the seal to a compressed fluid supply; a pneumatic door locking device including means for connecting the device to a compressed fluid supply; and means for simultaneously charging the compressed fluid to the seal and the locking device through the means for connecting.

REFERENCES:
patent: 3347200 (1967-10-01), Mege
patent: 3747275 (1973-07-01), May et al.
patent: 4073521 (1978-02-01), Mena
patent: 4284980 (1981-08-01), Hoinski
patent: 4304070 (1981-12-01), Musacchia
patent: 4335075 (1982-06-01), Kackos
patent: 4426358 (1984-01-01), Johansson
patent: 4441278 (1984-04-01), Covey, III
patent: 4631876 (1986-12-01), Saum

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