Indicator device with electric control of displacement of a fluid
US4636785A · kind A · utility
157Cited by
5References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1984 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Mar 22, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F9/372
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The displacement of a fluid is controlled electrically in a device employed primarily for storage and display of digital data. The device comprises a capillary space delimited by two confinement plates, the internal faces of which are fitted with electrodes connected to an electric generator. The capillary space is shared by two immiscible fluids and at least one displaceable fluid marker is created within the capillary space in the form of a globule of the fluid which has the highest dielectric permittivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.