| 摘要 |
A gearing system for a vehicle comprises a first rotational input 20, a second rotational input 14 and a rotational output 32. The first rotational input and second rotational input transmit a rotation to the rotational output, wherein one of the first rotational input and second rotational input is connected to the rotational output through a one way clutch 60, and wherein the other of the first rotational input and second rotational input is connected to the rotational output through an overrunning clutch 48, wherein said one way clutch and said overrunning clutch are coupled. The one way clutch and the overrunning clutch may be coupled by a bracket member which may take the form of a cylindrical mounting 52. The one way clutch may be a sprag clutch and the overrunning clutch may be a freewheel assembly. The vehicle may be an electric bicycle, but may also be another dual propulsion vehicle such as a hybrid car. |
