Fluid handling – Destructible or deformable element controlled – Heat destructible or fusible
Patent
1992-06-25
1994-06-14
Rivell, John
Fluid handling
Destructible or deformable element controlled
Heat destructible or fusible
137 79, 220 894, 228184, F16K 1738
Patent
active
053201272
ABSTRACT:
A safety valve for a sealed vessel, for releasing pressurized gas from the sealed vessel in an abnormally heated state defined by a critical temperature. The safety valve includes an end plate for the vessel, the end plate having opposite concave and convex surfaces. A bore perforates the plate at a low point of the concave surface. A central portion of the plate surrounding the bore is bent toward the bore so as to define a cavity which opens toward the concave surface. An alloy material, having a melting point which is lower than the critical temperature, is provided in the cavity and plugs the bore so that if the temperature of the pressurized gas exceeds the critical temperature, the alloy material melts thereby opening the valve and relieving the pressure within the vessel.
REFERENCES:
patent: 2251345 (1941-08-01), Triplett
patent: 3168210 (1965-02-01), Williams
patent: 3245578 (1966-04-01), Sutton
patent: 4232796 (1980-11-01), Hudson, Jr. et al.
patent: 4240573 (1980-12-01), Hudson, Jr.
patent: 4628953 (1986-12-01), Correll et al.
patent: 4744383 (1988-05-01), Visinic et al.
Yamashita Akiyoshi
Yanagihara Hiromu
Ajia Kinzoku Kogyo Co., Ltd.
Rabin Steven M.
Rivell John
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