Multilayer container package for dispensing a liquid product
US6719173B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Mar 25, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2205/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A package for dispensing a liquid product that includes an outer shell having a flexible resilient sidewall, a base wall and a finish surrounding an outlet opening. An inner bag-shaped liner is disposed within the outer shell, and is unattached to the sidewall and the base wall of the outer shell so as to be collapsible with respect to the outer shell as product is dispensed from the liner. A dispensing structure is secured to the finish. An opening in the base wall of the outer shell vents the volume between the shell and the liner to atmosphere. An atmospheric vent valve includes a base secured over the base wall of the outer shell, a valve pocket within the base having an atmospheric vent opening, and a valve disk received in the valve cup so that air pressure holds the valve disk against the base over the atmospheric vent opening when the container sidewall is squeezed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.