Sealed paper container
US4865203A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Feb 5, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D5/543
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sealed paper container filled with contents has a trunk of square to rectangular cross section. The trunk has a horizontal breakable portion formed in its three side walls close to their upper ends and removable by tearing by hand. The remaining side wall is provided at the same level as the breakable portion with a portion for forming a joint between the container body and the closure to be formed by removing the breakable portion. The breakable portion and the joint forming portion serve as a boundary to provide a closure forming portion thereabove and a container body forming portion therebelow. The container body forming portion has an engaging member secured to the inner side of its upper end, extending along the three side walls and projecting upward therefrom for engaging the closure to be formed by removing the breakable portion. The upward projection of the engaging member extends along the lower end of the closure forming portion on the inner side thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.