Electric motors
US4177396A · kind A · utility
8Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1977 |
| Grant date | Dec 4, 1979 |
| Priority date | — |
| Expiry date | Nov 1, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/25
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A d.c. electric motor has a permanent magnet stator and a wound rotor both mounted within a body. An end cover is fixed to the body and carries a thermal switch which is disposed inside the body adjacent to the windings and controls the supply current to the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.