Electric motor having a spherical rotor and its application apparatus
US5413010A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1992 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Jul 31, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1282
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-freedom electric motor has a broad operational range and a wide space for accommodating an article. The electric motor includes a spherical rotor, a plurality of magnets disposed on an outer surface of the rotor with polarities of the respective adjacent magnetic poles being different from one another, a stator provided along the outer surface of the rotor, and a plurality of magnets opposed to the magnets disposed on an inner surface of the stator. The rotor is supported by a spherical bearing provided on the stator. Either the magnets on the rotor or the magnets on the stator are electromagnets. Electric current are supplied to the electromagnets as controlled by a controller. The multi-freedom electric motor can be employed in a space stabilizer for maintaining the spherical attitude of an article, a control moment gyro for performing an attitude control in space, and an agitating apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.