Rupturable pressure relieving fluid containers

In a fluid container having an integral rupturable pressure relief area formed therein which ruptures and relieves pressurized fluids therethrough at a predetermined pressure level exerted thereon, the improvement comprising:

• said container including a wall of substantially uniform thickness;
• a substantially frustum-shaped indentation in said wall which forms a recess therein exteriorly of said container and a corresponding protuberance interiorly of said container;
• one or more scores formed on the part of said wall containing said indentation which define one or more rupturable detachable blowout areas;
• and
• said frustum-shaped indentation being of a size with respect to the thickness of said wall whereby when a predetermined fluid pressure is exerted from within said container on said wall, said indentation inverts and tears along lines of weakness created by said scores thereby detaching wall portions corresponding to said one or more blowout areas and relieving fluid pressure therethrough.

In a rupture disk assembly for relieving pressurized fluids contained thereby when the pressure of the fluids reaches a predetermined level, the improvement comprising:

• said rupture disk in said assembly including a frusto-conical portion positioned whereby the pressure of said fluids is exerted on the convex side thereof;
• at least one score formed on said frusto-conical portion of said rupture disk defining a rupture detachable blowout area therein;
• and
• said frusto-conical portion being of a size with respect to the thickness of said disk whereby when a predetermined pressure is exerted on said frusto-conical portion, said portion inverts and tears along the line of weakness created by said score thereby detaching a portion of said rupture disk corresponding to said blowout area and relieving pressurized fluids therethrough.