Miniature electric motors and method for manufacturing rotors for the same
US4152614A · kind A · utility
18Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1976 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Aug 24, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R39/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved small electric motor for use as a power source for toys, small electric instruments, and portable electric instruments, and a method for manufacturing rotors for such motor. The small electric motor is provided on a rotary shaft with a commutator provided in parallel and feeder brushes in resilient contact with the commutator. The commutator is fitted to the rotary shaft in a manner providing simplicity of assembly, adjustable positioning of the commutator on the rotary shaft, standardization of a magnet case, and favorable performance in the small motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.