Method of measuring thickness of long sheet material and thickness measuring system
US10870948B2 · kind B2 · utility
1Cited by
2References
4Claims
0Family size
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Key dates
| Filing date | Feb 22, 2017 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | May 29, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8663
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of measuring the thickness of long sheet material wound on to a reel spool while being pressed by a reel drum, includes: measuring the increase in the roll diameter of the wound roll formed from the long sheet material in a non-contact manner; measuring the number of rotations of the reel spool; and determining the thickness of the long sheet material by calculation using the measured increase in the roll diameter and the number of rotations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.