Valve device for a packaging configured to hold a product releasing a gas
US9944447B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 2014 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Nov 16, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7882
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A valve device for a packaging configured to hold a product releasing a gas. The valve device comprises, in an embodiment, a first inner film provided with a first opening and a second outer film covering the first opening. Between the first inner and the second outer film a first chamber is provided. The first opening provides a gas communication between the first chamber and the interior of the packaging. The first and second films define a channel being in fluid communication with the first chamber. Further, the valve device comprises a second chamber, and the channel connects the first and second chamber. The second chamber comprises a second opening being in fluid communication with the exterior of the packaging. At least one of the first and second chambers comprises a liquid and at least one spacer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.