Safety pressure relief apparatus
US4236648A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1979 |
| Grant date | Dec 2, 1980 |
| Priority date | — |
| Expiry date | Mar 5, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K17/1613
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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 suppor…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.