Patent ID: 6178983
Filing Date: 2001-01-30
Classification: F16K,Y10T

Abstract:
A pressure relief assembly, comprising:an inlet support member defining an inlet bore for conducting a pressurized fluid;an outlet support member defining an outlet bore for relieving the pressurized fluid;a rupture disk having a rupturable portion including a convex surface and a corresponding concave surface defining a dome area and a flange for sealing engagement between the inlet and outlet support members to align the concave surface with the outlet bore and the convex surface with the inlet bore, the rupturable portion including a score line having a first and a second end, the score line creating a line of weakness along which the rupturable portion will tear when the pressurized fluid exceeds a predetermined level; anda safety member disposed between the rupture disk and the outlet support member, the safety member including a flange and a hinge having a knuckle extending downwardly into the dome area and extending laterally across the dome area to an outer edge comprising three segments, wherein at least two of the segments are substantially linear, each of the segments are joined at an angle relative to the adjoining segment, and at least one of the segments is positioned inside the area circumscribed by the score line or inside the area circumscribed by an arc connecting the two ends of the score line, the hinge further including a tongue extending from the knuckle into the outlet bore in a direction generally perpendicular to the flange of the safety member.