Rupture disc pressure relief device
US4079854A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1976 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | Aug 9, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1767
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A safe pressure relief assembly of the rupture disc type guards against pressure differentials beyond a predetermined range extending both above and below zero and includes a positive relief disc which is perforated to permit negative flow without rupturing, a sealing disc normally blocking the perforations, a cutting member positioned in spaced relation to the sealing disc and extending a substantial transverse distance thereacross and a sealing disc support member having a stay arrangement projecting into negative supporting engagement with the sealing disc, the stay arrangement having a resistance to collapse sufficient to retain the sealing disc out of contact with the cutting member only up to a predetermined negative pressure. The subcombination of sealing disc, stay arrangement and cutting member is separately useful, especially as a very low pressure relief device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.