Automatically-actuated safety device with a double-seated valve to regulate the flow rate of a fluid
US6962165B2 · kind B2 · utility
8Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2003 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Apr 16, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87555
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A safety device for insertion into a pipeline (K) in which fluid circulates in an upstream (X−) and a downstream (X+) direction, comprises a tube (1) that provides the fluid with a central circulatory passage (CC) regulated by a central valve (3) that closes in the event of an excessive flow of this fluid. There is an annular valve closure member (4) which is elastically malleable, mounted to the external periphery of the tube (1), and provides the fluid with a peripheral circulatory passage which it selectively obstructs by subjecting a radial expansion in the event of an excessive flow of fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.