Receptacles – Container attachment or adjunct – Pressure relief means
Patent
1979-03-05
1980-12-02
Pollard, Steven M.
Receptacles
Container attachment or adjunct
Pressure relief means
B65D 2500
Patent
active
042366488
ABSTRACT:
The present invention relates to a safety pressure relief apparatus comprised of a reverse buckling rupture disk having a concave-convex portion connected to an annular flat flange portion by a curved transition connection and a support member having an annular flat flange portion for engaging the annular flat flange portion of the rupture disk and for supporting the transition connection thereof. The support member includes a partially circular cutting edge positioned interiorly of the transition connection and forming, in conjunction with a non-cutting interior edge, an opening in the support member so that when the concave-convex portion of the rupture disk reverses itself, the cutting edge partially severs the disk whereby a portion thereof bends about an unsevered hinge portion and passes through the opening in the support member. The hinge portion of the rupture disk is supported by the non-cutting interior edge of the support member. An improved serrated cutting edge is included having rounded notches between adjacent teeth thereby providing a cutting edge with fewer stronger teeth extending a shorter distance so that the available flow area through the opening in the support member is increased.
REFERENCES:
patent: 2095828 (1937-10-01), Nerad
patent: 2336490 (1943-12-01), Vico
patent: 3294277 (1966-12-01), Wood
patent: 3484817 (1969-12-01), Wood
Allen Jerome D.
Clift Miner E.
Forsythe Calvin C.
Short, III Edward H.
Strelow John L.
Black, Sivalls & Bryson
Pollard Steven M.
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