3D roller key
US6555768B2 · kind B2 · utility
25Cited by
6References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2000 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Jun 12, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/054
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to encoder-switch assemblies, such as electromechanical roller-key assemblies comprising an encoder part and two or more actuator switches. The encoder part operates in accordance to magnetic, optical and/or electromechanical principles and provides one or several electrical output signals indicating the instantaneous change of angular position of a rotating roller or tuning wheel. The actuator switches provide two or more electrical output signals indicating a plurality of positions of the roller-key or wheel of the assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.