Means for capacitive measurement of displacements
US4449179A · kind A · utility
14Cited by
7References
5Claims
0Family size
Inventor
Key dates
| Filing date | May 26, 1981 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | May 26, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2415
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The means for the capacitive measurement of displacements includes a scale in the form of a belt (10) movable longitudinally in relation to a measuring device which is provided with several groups of electrodes (22 to 25) connected by lines (27) to an electronic means. The belt (10) is made of metal and is provided with a plurality of regularly spaced rectangular openings (11). The belt (10) constitutes, with the transmitting electrodes (22 to 25) and a receiving electrode (29) situated relative to the transmitting electrodes, a differential condenser permitting the accomplishment of capacitive measurement of displacements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.