The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 1980
Filed:
Mar. 05, 1979
Loren E Wood, Tulsa, OK (US);
Calvin C Forsythe, Tulsa, OK (US);
John L Strelow, Broken Arrow, OK (US);
Edward H Short, III, Tulsa, OK (US);
Jerome D Allen, Tulsa, OK (US);
Miner E Clift, Broken Arrow, OK (US);
Black, Sivalls & Bryson, Houston, TX (US);
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.