Closing device for fluid passage
US7185668B2 · kind B2 · utility
3Cited by
15References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2004 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Jan 27, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1963
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve device for automatically closing a gas pipe when a fire breaks out. The valve device includes a gas thermosensitive generating composition, which decomposes and generates a large amount of gas within a short period when exposed to a high temperature. The valve body is driven with pressure of the gas generated by the gas generating composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.