Fire barrier gasket seal

Details Fire barrier gasket seal Fire barrier gasket seal

1991-12-31

1995-04-18

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277227, 277235R, 285187, F16L 5500

Patent

active

054072140

ABSTRACT:
A gasket seal comprises a hollow metallic annular member with hollow interior filled with a thermally expanding material and exterior surface surface thereof lined with a resilient layer of sealing material; wherein the contact pressure between the resilient layer of sealing material and metallic surfaces sealed by the gasket seal, that is imposed by the fastening employed in joining the metallic surfaces, provides the sealing under normal conditions, while the additional contact pressure exerted by the thermal expansion of the thermally expanding material contained in the hollow metallic annular member as a result of an elevated temperature provides the sealing in case of fire.

REFERENCES:
patent: 1635482 (1927-07-01), Joyce
patent: 2074388 (1937-03-01), Gordon
patent: 2299813 (1942-10-01), Franks
patent: 2459720 (1949-01-01), Poltorak
patent: 3989285 (1976-11-01), Yancey
patent: 4156533 (1979-05-01), Close et al.
patent: 4223897 (1980-09-01), Stab et al.
patent: 4756561 (1988-07-01), Kawata et al.
patent: 4776600 (1988-10-01), Kohn
patent: 4795174 (1989-01-01), Whitlow

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