Power tool with motor air flow path control
US7732955B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2008 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Sep 1, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/145
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In accordance with an aspect of the present disclosure, a power tool has an electric motor having a stator disposed in a field case. The stator has field coils having opposed axial ends that extend axially outwardly from opposed axial ends of a lamination stack of the stator. An armature is disposed in the stator and has a shaft on which a fan is disposed. There are gaps between the opposed axial ends of the respective field coils. The fan baffle includes an air direction member that extends into one of the gaps to direct air flow between the armature and the stator. In an aspect, the fan baffle includes a plurality of such members, one for each gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.