Device for detecting defects of web
US5287742A · kind A · utility
8Cited by
9References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 4, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Sep 4, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0278
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A plurality of probes 3 or 10 are arranged in a conveying path of a web 1 or 9 comprising a slit sheet or a nonwoven fabric for contact with the web 1 or 9. The probes 3 or 10 are rotatably supported and arranged so that if a defect portion exists in the web 1 or 9, the probes 3 or 10 rotate to the defect portion of the web and protrude under the web, and when the probes 3 or 10 protrude under the web, a detecting means 6b outputs a defect detection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.