Electric propulsion units
US7186156B2 · kind B2 · utility
7Cited by
9References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2002 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Jul 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A propulsion unit for propelling a waterborne vessel includes an electric motor arranged to provide propulsion, and a housing arranged to contain the motor. The interior of the housing is maintained at an increased pressure of above roughly 2 bar to increase the cooling effect of a cooling gas maintained therein. An end region of the housing is provided with a heat exchange mechanism arranged to cool a cooling gas passing thereover. The heat exchange mechanism is associated with the housing such that, in use, water surrounding the housing absorbs heat therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.