Apparatus for contactless measurement of the thickness of a sheet material
US4301365A · kind A · utility
2Cited by
1References
3Claims
0Family size
Inventors
Key dates
| Filing date | Sep 24, 1979 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Sep 24, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N23/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for contactless measurement of the thickness of a sheet material comprises a radioactive source located in a protective container which has a collimating hole to output a flow of radiation. There is a radiation detector to sense the radiation passed through the material under control, which is electrically connected to a radiation intensity meter, and also compressed air means for delivery of a jet of compressed air to the measurement point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.