Device and method for calibrating a non-destructive sheet strength measuring system
US5111688A · kind A · utility
13Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1991 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Mar 21, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/852
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A running blade is adapted to move at the same speed as a continuously running sheet and to generate a burst perforation through the sheet. The force exerted by the blade against the sheet is measured and used to calibrate a non-destructive sheet strength sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.