Current noise insulated spindle motor
US6740991B2 · kind B2 · utility
2Cited by
42References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2001 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Feb 22, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/24
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The motor apparatus includes a motor and an insulating device. The motor such as a spindle motor is driven with pulse width modulation. Then, the insulating device insulates an object to be protected, which should be protected from a noise current generated from the motor, from the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.