Patent ID: 9266583
Filing Date: 2016-02-23
CPC Classification: B62M,F16D

Claim Text:
1. A drive device configured to be operated in a hybrid fashion by an electric motor and by muscle force, the drive device comprising: a drive housing, in which a hollow shaft is mounted, which is connected to a chain wheel of a chain transmission of an electric bicycle, a pedal crank shaft, which is arranged coaxially in respect to the hollow shaft and which is connected at both ends to pedal cranks, a first clutch, which is arranged between the hollow shaft and the pedal crank shaft and is configured to be shifted depending on a rotation direction and an electric motor, whose output is connected to the hollow shaft via a second clutch which is configured to be shifted depending on the rotation direction, wherein the hollow shaft can be coupled to the pedal crank shaft in both rotation directions of the pedal crank shaft.