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.

Abstract: A method of sealing a pressure vessel so that pressurized gas in the vessel is released if the temperature of the gas approaches a critical temperature. An end plate having a concave upper surface and a convex lower surface, is provided with a bore perforating the plate at a low point of the concave surface. A central portion of the plate surrounding the bore bending downwardly to the bore so as to define a cavity in the plate. The plate is oriented with the concave surface facing in an upward direction. An alloy pellet, having a melting point which is lower than the critical temperature, is provided onto the concave surface so that the pellet is gravitationally drawn to rest in the cavity. The end plate is then heated at a temperature higher that the melting point of the pellet so that the pellet is melted and plugs the bore. The end plate is then cooled to solidify the melted pellet in the cavity and in the bore.

Abstract: A method of manufacturing a metal container by attaching a body formed integral with a top cover to a bottom plate formed separately. The body and bottom plate are sealably attached together with an adhesive and by a tight curl. The tight curl is formed toward the interior of the container and not exposed outside, thus making it pleasing to the eye.

Abstract: A metal container and a method of manufacturing the same as disclosed herein are provided by attaching a body formed integral with a top cover to a bottom plate formed separately. The body and bottom plate are sealably attached together with an adhesive and by a tight curl. The tight curl is formed toward the interior of the container and not exposed outside, which makes it very pleasing to the eye.