초록 ▼

An electrically assisted bicycle is disclosed, including a modified elongated frame, such that the storage battery and motor may be mounted at a low level between the pedals and the rear wheel for a more stable and smooth ride and to lessen the likelihood of wheel hop, and to make the vehicle easier

An electrically assisted bicycle is disclosed, including a modified elongated frame, such that the storage battery and motor may be mounted at a low level between the pedals and the rear wheel for a more stable and smooth ride and to lessen the likelihood of wheel hop, and to make the vehicle easier to hold upright at rest. The motor and pedals are efficiently coupled so that either or both simultaneously may power the driven wheel; and either power source can remain stationary, causing no drag, while the other propels the vehicle.

대표청구항 ▼

An electrically powered bicycle having a frame member including a generally conventional arrangement and dimensioning of a head tube, a front fork depending downward from the head tube, a bottom bracket for rotatably supporting a chain wheel with pedals coupled to the chain wheel, a seat support and

An electrically powered bicycle having a frame member including a generally conventional arrangement and dimensioning of a head tube, a front fork depending downward from the head tube, a bottom bracket for rotatably supporting a chain wheel with pedals coupled to the chain wheel, a seat support and frame members extending at least between the bottom bracket and the seat support and the bottom bracket and the head tube, a generally horizontal chain stay, a rear wheel, means for rotably supporting said rear wheel from said chain stay, an elongated generally horizontal frame member extending between said bottom bracket and said chain stay, a battery, means for supporting said battery on said elongated frame member, an electric motor, means for supporting said electric motor on said elongated frame member, a drive shaft, a first sprocket disposed about said drive shaft, means for driving said drive shaft from said electric motor, means for driving said rear wheel from said first sprocket, and means for driving said first sprocket only from said drive shaft, only from said pedals and concurrently from both said drive shaft and said pedals.