Container with extensible pouring spout
US4313553A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Oct 2, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D5/068
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The drawings and description disclose a container having the usual fold-in end panels and roof panels interconnected by front and rear sets of fold-back panels, with inner sealing rib panels extending vertically from the fold-back panels and confined between oppositely disposed outer sealing rib panels extending vertically from the roof panels, supplemented by fold-over lip panels attached to and folded over onto the inner sealing rib panels, serving to provide a stiffer spout to facilitate the opening process, while eliminating a raw edge on the pouring lip and greatly diminishing fiber tear and delamination of the pouring surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.