Safety valve for a liquid tank
US6230732A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1999 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | May 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0874
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Safety valve for venting a liquid tank, comprising means for ventilating the tank, including when the latter is inclined, for preventing liquid from being ejected if the tank is inclined or if waves of liquid are produced, for automatically closing in the event of inversion, for adjusting the useful volume and for allowing gas to escape during filling. As a preference, it also comprises means for ventilating it in the event of a depression or overpressure. The valve is characterized in that a flexible seal equips the seat of a valve element. As a preference, the head of the valve also comprises means for preventing dirt from getting into the tank. The valve is well suited to fuel tanks for diesel-engine motor cars.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.