Apparatus for sensing the thickness of a moving sheet of film
US5225785A · kind A · utility
25Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1992 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Nov 12, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2417
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotatable capacitance sensor preferably constructed of a generally cylindrical body mounted on bearings to a carriage assembly. The body has a number of parallel, spaced apart conductive plates having edges extending through the exterior body surface, and alternate ones of the plates are connected via a bearing to a conductor in one part of the carriage assembly, and the remaining ones of the plates are connected via a bearing to a second conductor in another part of the carriage assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.