Spherical paper package
US4172549A · kind A · utility
Inventor
Key dates
| Filing date | Mar 28, 1978 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Mar 28, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D5/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A spherical paper package and a blank for making the same. One version of the blank has, arranged alternately and in parallel, a plurality of side sheets and folding sheets. The sheets are divided into three equal parts longitudinally by two transverse folding lines and are equally divided vertically by a plurality of longitudinal folding lines. Two diagonal folding lines are provided at the upper and lower portions of each of the folding sheets. The package is formed by folding the upper and lower portions of the folding sheets towards the center along the transverse folding lines. In another version, the transverse folding lines of the first version are replaced with transverse fold lines dividing each of the folding sheets in half. The fold lines cooperate with diagonal folding lines to form isosceles triangles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.