Fluid shutoff apparatus
US6907898B2 · kind B2 · utility
5Cited by
10References
18Claims
0Family size
Inventors
Key dates
| Filing date | Apr 8, 2003 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Jan 15, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87338
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid shutoff apparatus utilizes a float [121] of a float chamber [115] connected to a float-operated valve [113] to provide positive shutoff of fluid to a downstream load upon excessive flow from the fluid outlet [109] of the apparatus. The float-operated valve is shut when fluid discharge from the apparatus is greater than the flow rate from a flow-limiting valve [103] connected to a fluid inlet [107], decreasing the fluid level in the float chamber. The volume of the float chamber prevents inadvertent shutoff of fluid due to normal perturbations in flow to the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.