BICYCLE WITH REAR DRIVE ASSEMBLY FOR ELLIPTICAL MOVEMENT

摘要

A bicycle with a rear drive assembly configured to allow pedal boards to be pivotable while moving in an elliptical trajectory and which allows a cyclist to ride in an erect position is disclosed. A front end of each of the pedal boards is pivotably connected to an end of a crank and each of the pedal boards is connected to or integral with a guide rod extending rearwardly from the pedal board. The guide rods are supported by a rear drive assembly comprising a transverse tube that is horizontally connected to a frame of the bicycle. A roller is mounted at each end of the transverse tube. Each roller has a groove which accommodates the cross-section of the guide rod.

主权项

1. A bicycle with a rear drive assembly configured to allow pedal boards to be pivotable while moving in an elliptical trajectory, the bicycle comprising:
a front wheel; a rear wheel having a ratchet mounted thereon for driving the rear wheel; a tubular frame including a front handlebar that controls the front wheel via a fork which is operatively connected between the handlebar and the front wheel; a central drive assembly including a sprocket and cranks extending from the sprocket; a chain surrounding the sprocket and extending toward a rear portion of the tubular frame in order to drive the ratchet; pedal boards having front and rear ends, wherein the front end of each of the pedal boards is pivotably connected to an end of the crank; a guide rod extending rearwardly from each of the pedal boards; a rear drive assembly comprising:
a transverse tube connected to the tubular frame in a vicinity of the rear wheel; anda primary roller mounted at each end of the transverse tube, each primary roller having a groove along a perimeter of the primary roller that accommodates a cross-section of the guide rod; wherein the pedal boards are pivotable while moving in an elliptical trajectory.