Push-down compressible pouch with one-way valves on sides
US8328421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2009 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Dec 26, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D33/2508
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Airtight compressible storage containers (e.g., pouches) having one-way valves in the form of respective collapsible channels that run along and adjacent to respective pouch side seals. Each collapsible channel comprises unsealed sections of web material that span the space between a respective side seal and a respective interior seal. Each collapsible channel communicates with a respective air inlet located in the interior volume of the pouch and a respective air outlet located on a periphery of the pouch. When the contents of the pouch are compressed by a user pushing down on pouch, air from the storage chamber containing the compressible contents can be forced into the air inlet, through the open channel and out the air outlet until the desired amount of air has been removed from the pouch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.