Integrity protection for pressurized bi-directional systems
US8322357B2 · kind B2 · utility
16Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 2009 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Jul 7, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8733
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Excess flow valve devices, which are responsive to pressure and flow conditions in a bi-directional system, including structures to restrict flow in one direction through openings of a stopper of an excess flow valve based on balancing forces from at least a spring and a frictional force caused by the flow. Bi-directional system employing at least one pressure delayer responsive to pressure and flow impulses to protect a tank valve of a storage tank or a regulator during a refill phase or a discharge phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.