Forced cooled electric motor
US4092556A · kind A · utility
18Cited by
9References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1975 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Aug 14, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor comprising a rotor, a stator and a commutator means for controlling energization of the rotor or the stator is equipped with ducts which open opposite the surface of contact between the brushes and the commutator of said commutator means for directing jet of a cooling medium through the ducts directly onto the commutator means so as to prevent the efficiency drop of the motor due to heat generated therein and to forcibly blow out sparks occurring at the commutator means, in order to provide a forced cooled electric motor which is small in size and weight and yet can produce a high power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.