| 摘要 |
In a wheelchair, battery operated electric driving means for driving two wheels each mounted on a wheel plate connected to the wheelchair frame. For each driven wheel a motor is carried on the wheel plate and drive is transmitted to a pinion fixed on the wheel through a pivotal gear carrier carrying one or two idler gears in constant mesh with the fixed pinion, but movable into or out of mesh with a motor driven pinion on controlled pivotal movement of the gear carrier. |
