Scoring rule
US6071225A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31F1/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A resilient scoring rule for a rotary cutting die produces a creased or indented line in cardboard or paperboard along which line the board is subsequently folded when formed into a final product, such as a container. The scoring rule has a longitudinally extending, centrally disposed projecting web and opposed, cantilevered, symmetrical inwardly directed left and right ears having ends generally adjacent the central web. A pair of outwardly extending flanges raise the edge adjacent regions of the rule off the cutting die surface and function as mounting features which cooperate with staples or other retaining devices. An alternate embodiment scoring rule includes a pair of center projections or ribs flanked by a pair of cantilevered ears.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.