Method of erecting flat folded cases
US4163414A · kind A · utility
23Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1977 |
| Grant date | Aug 7, 1979 |
| Priority date | — |
| Expiry date | Feb 23, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2120/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Flat folded four-panel case is set up in a vertical takedown plane. The case is pulled out of the plane and manipulated to cause the four panels to move relative to each other so that the case assumes a diamond shape. The case is then partially erected. Next, one of the panels is held fixed (with the others being free to move) and a bottom flap is folded inwardly. This transmits forces to the panels so that the diamond shape changes to a square shape and the case is fully erected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.