Static structures (e.g. – buildings) – Combined
Patent
1975-10-29
1977-05-03
Purser, Ernest R.
Static structures (e.g., buildings)
Combined
52 2, 49477, E06B 723
Patent
active
040206076
ABSTRACT:
The sealing device disclosed herein is designed for providing an air tight seal between a door casing and the sides of a vehicle positioned adjacent the casing. It comprises an elongated rigid angular profile having flanges which define a channel-shaped space therebetween and a resilient and collapsible pad structure fastened in the channel-shaped space between the flanges of the angular profile. The pad structure includes a collapsible spongy material enclosed in an air tight envelope, and the interior of the pad communicates with a vacuum source. In its distended position, the material inside the pad structure will cause the pad to expand a considerable distance beyond the flanges of the angular profile so as to abut the sides of the vehicle thereby providing an air tight seal. When a vacuum is applied to the collapsible material, the pad structure will collapse and be retracted almost completely into the channel-shaped space between the flanges of the profile. The sealing device is then in its inoperative position leaving a free space between the profile and the walls of the vehicle.
REFERENCES:
patent: 2701899 (1955-02-01), Krupp
patent: 2763038 (1956-09-01), Hagerty
patent: 3042980 (1962-07-01), Brinsmade
patent: 3161229 (1964-12-01), Sanders
patent: 3303615 (1967-02-01), O'Neal
patent: 3424222 (1969-01-01), Stoner
patent: 3516471 (1970-06-01), Harkins
patent: 3693831 (1972-09-01), West
Purser Ernest R.
Raduazo Henry
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