Variable speed AC electric drive vehicle
US5293947A · kind A · utility
56Cited by
11References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1991 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Sep 3, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/7072
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An externally powered electric vehicle with an on-board variable speed AC drive motor drawing power from an overhead trolley line. The vehicle may include an auxiliary power source in the form of a battery or internal combustion engine for powering the vehicle when the vehicle is disconnected from the trolley line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.