Stepping motor for stable control of position of driven body
US6144120A · kind A · utility
19Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Jun 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/1732
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stepping motor is provided with a plate spring for pressing a housing and a rotor against each other. One of the housing and the rotor is provided with a projection. Variations in position, which is inherent in position control by a related art stepping motor, due to lack of a retaining force subsequent to an initial position setting or due to variations in rotating speed of the motor, are eliminated. Thus the motor is suitably used for controlling of the position of, for example, an HID lamp unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.