Front-and-rear-wheel-drive vehicle
US8448542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2012 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Mar 15, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19126
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A front-and-rear-wheel-drive vehicle includes first and second electric drive motors which drive front and rear wheels, the second electric drive motor has a maximum torque greater than that of the first electric drive motor, a first speed reducer which reduces rotation of the first electric drive motor, a second speed reducer which reduces rotation of the second electric drive motor at a speed reduction ratio smaller than that of the first speed reducer, the speed reduction ratios of the first and second speed reducers are set in a manner that a maximum rate of rotation of one of the front and rear wheels corresponding to that of the second electric drive motor is greater than a maximum rate of rotation of the other wheel corresponding to that of the first electric drive motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.