Vent cap
US6886579B2 · kind B2 · utility
1Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2003 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Mar 29, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87378
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vent cap is provided for releasing gas from containers, while preventing spillage of the contents therein when the container is tipped from a vertical position. The vent cap has a ball bearing mounted in a ball bearing containment chamber on the top thereof which, when the container is in an upright vertical position, allows release of gases from the container but, when the container is tipped, allows a piston disposed within the vent cap to close off gas release ducts formed in the vent cap, thus effectively preventing spillage of the containers contents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.