| 主权项 |
1. A dual-drive velocipede, comprising:
a frame having a rear wheel rotatably mounted therein, and a foot-pedal mechanism connected to the rear wheel via a drive train that transfers energy from the feet of a rider to the rear wheel; a steering assembly including a front fork having a front wheel rotatably mounted therein, a steering tube connected to the front fork, and a pivot joint pivotally connecting the steering tube to a front portion of the frame, and a front drive transmission system that transfers energy from the arms of a rider to the front wheel, including:
a case member connected to one of the steering tube and the front fork;a horizontally-oriented crank shaft rotatably mounted in the case member;a pair of hand cranks mounted on opposite ends of the hand crank shaft, anda gear train including a vertically-oriented drive shaft that connects a rotational output of the crank shaft to the front wheel,wherein the case member is connected to the upper end of the front fork, the front fork has left and right fork members disposed on opposing sides of the front wheel, and one of said fork members provides a housing for the vertically-oriented drive shaft of the gear train, andwherein the fork member that provides the housing for the vertically-oriented drive shaft of the gear train is a hollow tubular member that surrounds the drive shaft, and the front fork is a dual crown, triple tree fork. |
