Encoder
US6973731B2 · kind B2 · utility
6Cited by
13References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2003 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Jan 3, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/252
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an encoder including a rotary member and a fixed member. The fixed member is provided with an electrode having A-channel, B-channel and C-channel patterns, the rotary member is provided with contacts which are to be opposed to the electrode. A-C state switches from OFF to ON at each rotation of the rotary member for one click angle from a stable click position in both CW and CCW direction. During CW rotation for one click angle, B-C state remains unchanged from OFF; during CCW rotation for one click angle, B-C state switches twice between ON and OFF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.