Digital display measuring apparatus
US4578868A · kind A · utility
38Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Mar 30, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2403
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A digital display measuring system includes a movable and stationary members between which an object to be measured is located, these members respectively supporting transmitter and receiver electrodes which define a variable capacitor having its electrostatic capacity which is adapted to change as the movable member is displaced relative to the stationary member. The change of electrostatic capacity is detected and converted into an electrical signal which is digitally indicated on a display to show the mechanical displacement of the movable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.