Patent ID: 6959828

Claim:
Non-fragmenting pressure relief apparatus comprising: a rupture disc having a central section and a peripheral flange section, said central section of the rupture disc having opposed faces, said central section of the disc being provided with a rupturable line of weakness having a segment extending around a major part of the central section of the disc, said segment of the line of weakness having opposed terminal extremities; a pair of reinforcing panels secured to one face of the central section of the rupture disc, each of said panels being aligned with a respective terminal extremity of the line of weakness segment, each of said reinforcing panels being provided with an end region line of weakness in disposition presenting an extension of respective terminal extremities of the line of weakness segment, said end region lines of weakness being in spaced relationship to define a unitary hinge portion of the central section of the disc therebetween, each end region line of weakness having an outermost end, said end region lines of weakness converging toward one another and then diverging away from one another as said outermost end of the end region lines of weakness are approached.