Bimetallic spiral wound gasket

Details Bimetallic spiral wound gasket Bimetallic spiral wound gasket

1985-07-09

1987-06-16

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 1, 277204, F16J 1512

Patent

active

046731873

ABSTRACT:
A temperature-sensitive gasket comprised of an annular ring formed by alternating layers of a spirally wound bimetallic strip and an adjacent strip of soft filler material, such as Teflon. When viewed in cross-section, the bimetallic strip has a centrally located V-shaped fold in an otherwise flat surface. Differences in the relative rates of thermal expansivity between the convex surface and the concave surface of the bimetallic strip cause the edges of the strip to spread apart, providing a reversably tighter seal between the surfaces adjacent the gasket. The spiral wound bimetallic and filler strips are also used in combination with annular compression rings.

REFERENCES:
patent: 1857961 (1932-05-01), Lamb
patent: 2520089 (1950-08-01), Lippincott
patent: 3361430 (1968-01-01), Reid
patent: 3604716 (1971-09-01), Webert
patent: 4445694 (1984-05-01), Flaherty
Brochure entitled "Sepco Metallic Gaskets" by Fluorocarbon, Sepco Metallic Gasket, Houston, Tex., p. 20, dated 9/1984.

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