Superconducting electric motors
US4020374A · kind A · utility
4Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1975 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Mar 21, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/88
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A linear motor comprises an electrically conductive tubular track consisting of one or more pairs of helically wound strips and a movable assembly. The movable assembly includes a superconducting field winding freely spinning about an axis close to the axis of the track and at least one auxiliary polyphase winding of normally conducting material coaxial to the field winding and adapted to develop a rotating field when AC currents circulate therein. The auxiliary winding supporting structure is connected to a vehicle to be driven along the track.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.