Container system including an air evacuation valve
US5944211A · kind A · utility
57Cited by
16References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1997 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | Aug 26, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/2038
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A container system includes a one-piece, one-way valve. The container system can be evacuated by pressing the lid, thereby forcing air out of the one-way valve. The one-way valve does not allow air to enter the container system. The one-way valve includes an interface or release which allows air to enter the container system when the interface is pressed. The one-way valve is preferably an umbrella-shaped valve made of a silicone or plastic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.