Patent ID: 7658300
Filing Date: 2010-02-09
Classification: F17C

Abstract:
1. A vessel for containing hazardous pressurized material, comprising: a generally tubular body portion and at least a first end member defining an interior region containing a lethally-inhaled substance, wherein the generally tubular body portion has first and second ends that are inwardly chimed toward a centerline of the vessel; wherein the at least a first end member has a domed center portion and substantially uniformly thick walls, wherein the domed center portion is convexly curved with respect to the interior region having a radius of curvature from a center to a circumferential edge of the at least a first end member whereby the at least a first end member is adapted to concavely invert under pressure thereby increasing a volume of the vessel and automatically reducing pressure of the lethally-inhaled substance, wherein the at least a first end member forms a lap weld joint with an interior surface of the generally tubular body portion that is retracted with respect to the first and second ends such that the lap weld joint is formed within the interior region of the generally tubular body portion; and, wherein the at least a first end member is fusion welded to the generally tubular body portion at the lap weld joint.