Patent ID: 8602148
Filing Date: 2013-12-10
Classification: B62M,Y10T

Abstract:
1. A portable removable apparatus for powering a bicycle driven by a bicycle chain, the apparatus comprising: a portable and removable drive unit for propelling the bicycle, the drive unit including an electric motor and an output shaft rotatable by the electric motor with a sprocket coaxially affixed to the shaft and adapted to engage to an inner side of a portion of the bicycle chain; a bracket adapted to be fixed to a frame of the bicycle and to be in bearing contact with the output shaft for supporting the output shaft; and at least one additional support for supporting the drive unit on the bicycle frame so as to substantially eliminate lateral torque on the drive unit when the drive unit is engaged with the chain and is operating such that the output shaft is pulled against the bracket and the drive unit is pulled against said at least one additional support.