Rupturable low pressure relief apparatus
US4434905A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1982 |
| Grant date | Mar 6, 1984 |
| Priority date | — |
| Expiry date | Mar 31, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1774
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Rupturable pressure relief apparatus are provided which are less subject to damage and premature failure as a result thereof and which reliably rupture at very low pressure differentials. The apparatus are adapted to be clamped between conventional pipe flanges or annular support members and are basically comprised of a first circular rupturable member formed of solid flexible material and a second circular rupturable member also formed of flexible material positioned adjacent the first rupturable member. The second rupturable member includes a solid annular flange portion and a plurality of arcuate slots circumscribing a substantially circular central portion wth rupture tabs between the arcuate slots. Knife means having a cutting edge forming at least a portion of a circle are positioned adjacent the second rupturable member on the side thereof opposite from the first rupturable member so that when the second rupturable member ruptures, the first rupturable member is severed by the knife means. Alternate embodiments add addtional rupturable members and knife means to cause the apparatus to rupture in either directon at low pressure differentials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.