Device for sensing the direction of rotation of a hand tool comprising an electric motor
US7600577B2 · kind B2 · utility
12Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2006 |
| Grant date | Oct 13, 2009 |
| Priority date | — |
| Expiry date | Dec 26, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/937
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for sensing a direction of rotation of a hand tool having an electric motor, has a rotatably supported brush plate provided in the electric motor and located in different positions depending on a direction of rotation of the electric motor; and at least one sensor which senses the different positions of said brush plate to determine a direction of rotation, wherein said sensor is configured as a contactless sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.