Electric motor operated impeller
US5401145A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1994 |
| Grant date | Mar 28, 1995 |
| Priority date | — |
| Expiry date | Feb 22, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor operated impeller has a drive motor having a motor shaft, a stator and a rotor rotated about a rotary axis, an impeller housing having a receiving casing which extends in direction of the rotary axis of the rotor and accommodating the electric drive motor. The receiving casing has a wall against which the stator of the drive motor radially abuts a bottom and an opposite edge. A support supports the shaft of the motor and is provided with throughflow openings for cooling air. The wall of the casing has at least one channel-shaped expansion extending parallel to the rotary axis and formed so that the expansion is open toward the edge of the casing and closed toward the bottom of the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.