Vent valve for closed tank
US11346455B2 · kind B2 · utility
0Cited by
1References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 2, 2019 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jul 29, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A vent valve for a closed tank, the vent valve being provided in an upper surface of the closed tank storing liquid, may include an upper housing provided with an upper air hole disposed outside the closed tank; a lower housing provided with a lower air hole disposed inside the closed tank; and a valve core provided in a housing space area surrounded by the upper housing and the lower housing and providing a ventilation path through which only gas passes between the upper air hole and the lower air hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.