Motor having rotational sensor
US6707188B2 · kind B2 · utility
18Cited by
42References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2001 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Jan 19, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotational sensor of a motor includes a sensor magnet and a sensing element. The sensor magnet is secured to a driving-side rotator of a clutch, which is connected to a rotatable shaft of the motor, to rotate integrally therewith. The sensing element measures a rotational speed of the sensor magnet. Furthermore, the sensing element is secured to a motor case in such a manner that the sensing element opposes the sensor magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.