Patent ID: 8919254

Claim:
A vessel, comprising: a body defining an internal cavity; a cylindrical insert to close and seal a cylindrical opening in the body, the insert and opening having coaxial longitudinal axes; and a joint material forming a joint between the body and the insert, the joint material creating a conditionally secure attachment, wherein at least one of the body and the insert has formed on a surface thereof one or more circumferential annular rings and one or more grooves that are parallel to the longitudinal axes and intersect the one or more annular rings, the rings and grooves collectively defining a void between the body and the insert, the joint material being disposed within the void, wherein the joint material is selected so as to be injectable into and set within the void and so that it softens when exposed to a predetermined temperature, and wherein the joint permits the insert to become displaced from the body by pressure within the internal cavity when the predetermined temperature is exceeded, thereby allowing contents of the vessel to escape in a controlled manner and the pressure to be reduced.