Pressure relief device for internally pressurized fluid container
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United States of America Patent
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Apr 30, 1985
Issued Date -
N/A
app pub date -
Jan 25, 1984
filing date -
Jul 16, 1980
priority date (Note) -
Expired
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Abstract
A pressure relief device for a metal container having a generally cylindrical side wall and being of the type adapted to contain fluids under pressure. The device includes a concave closure element circumferentially joined to one end of the container side wall. The closure element is deep drawn of tempered steel, with a generally convex tab member integrally formed in a central area thereof. The tab member is partially circumscribed by a weakened line of reduced material thickness, and the closure element has a structural integrity which reacts to an overpressurization of the fluid in the container by undergoing a partial eversion which initiates a fracture along the weakened line accompanied by an outward deflection of the tab member, thereby permitting the overpressurized fluid contents to escape through the fracture.
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