Pressure sensitive cap closure and valve
US5850908A · kind A · utility
45Cited by
6References
10Claims
0Family size
Inventor
Key dates
| Filing date | Oct 29, 1997 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | Oct 29, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D47/283
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A closure cap valve apparatus for mounting on the top of a beverage container. A piston valve within the cap is biased towards closure to prevent spillage. Additionally, pressure increase within the container is directed to increase sealing force of seals positioned on the piston and thus prevents the release of pressure from the container, allowing the closure to be used for carbonated beverages. The piston is displaced from the closed position, even when the container internal pressure is increased, by the user sucking on a mouth piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.