Provided is an electric drive riding greens mower. The mower includes a frame which is supported for movement upon a plurality of ground engaging wheels and upon which are supported a motor generator set and a plurality of reel lawn mowers. An electric motor provides driving torque to enable movement...http://www.google.fr/patents/US5794422?utm_source=gb-gplus-shareBrevet US5794422 - Electric drive mower with motor generator set
