Head locking means for slitter scorer
US4237761A · kind A · utility
10Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 23, 1978 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | May 23, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9377
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A corrugated paperboard slitter scorer has slitting and scoring heads movable individually or as a group along an expandable shaft by way of a master shifter. The expandable shaft provides a friction drag to maintain a head in position until all heads are simultaneously locked to the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.