Bleed system
US5979488A · kind A · utility
9Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Jul 9, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87265
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved bleed system for a double block and bleed plug-type valve which employ a safety check valve which automatically shuts off bleed system flow upon ruptures or upon an inadvertently open manual bleed valve during normal plug valve operation. An integral component combines the safety check valve and other bleed system components in a unitary device which is especially resistant to plumbing damage incidents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.