| 摘要 |
The invention relates to driven means and particularly a driven means capable of use indoors. Indoor transportation means such as are used in hospitals, airports and other large public buildings, and floor cleaning equipment for use in such locations have the disadvantage of requiring large and/or multiple banks of batteries, with limited life between charges and a limited range. Mains driven, e.g., cleanning devices have the disadvantage of requiring an extremely long cable, and are cumbersome to use and are slow. Outdoors, known electric vehicles solve pollution problems but need large or multi-bank batteries and again have limited life between charges and a limited range. The invention seeks to overcome these disadvantages by providing a driven means comprising an electric motor connected to driven wheels, a generator to power the motor, and a gas driven engine to drive the generator. Any ancillary items of equipement on the driven means may also be driven by the electric motor. |
