Fluid handling – Destructible or deformable element controlled – Heat destructible or fusible
Patent
1985-07-09
1987-04-21
Shoap, Allan N.
Fluid handling
Destructible or deformable element controlled
Heat destructible or fusible
49475, 49480, 49489, 251174, 251315, 277 26, 277152, 277205, E06B 100, F16J 1512, F16K 1740, F16K 4300
Patent
active
046588477
ABSTRACT:
A self-actuating temperature sensitive seal comprised of a bimetallic C-ring. Differences in the relative rates of thermal expansivity of the inner face and the outer face of the C-ring cause the C-ring to expand or contract in response to temperature variations. Expansion of the C-ring will create a seal, and contraction of the C-ring will remove the seal between the surfaces surrounding the C-ring. The bimetallic ring may also be used in combination with a spring-biased soft seal made of a fluorocarbon polymer, such as Teflon, to form a fire-safe composite seal. In cryogenic applications, the bimetallic C-ring can provide a seal by itself, or as a biasing element within a surrounding soft jacket.
REFERENCES:
patent: 1857961 (1932-05-01), Lamb
patent: 3361430 (1968-01-01), Reid
patent: 3604716 (1971-09-01), Webert
patent: 3831950 (1974-08-01), Bentley et al.
patent: 3901517 (1975-08-01), Heathcott
patent: 4286614 (1981-09-01), Kaeal et al.
patent: 4304409 (1981-12-01), Orlowski
patent: 4327895 (1982-05-01), Blumenkranz et al.
patent: 4519412 (1985-05-01), Grazioli
Fluorocarbon Metallic C-Rings brochure, 1983 by The Fluorocarbon Co.
Aeroquip Omniseal Catalog 115, 1972 by Aeroquip Corp.
Shoap Allan N.
The Fluorocarbon Company
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