Cooling apparatus for motor means to protect commutator from dust and moisture in cooling air
US4626720A · kind A · utility
30Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1984 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | Nov 30, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Cooling air is introduced through an opening in a wall portion of the motor housing radially opposing the commutator. A deflecting surface is provided for deflecting the cooling air entering the motor through the opening away from the commutator and toward the armature so as to prevent direct contact of dust and moisture in the cooling air with the commutator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.