Exercise device e.g. exercise bike for gym, includes multi-speed gearing set that extends upwardly to contact rocking bar and extends downwardly to be engaged with driving wheel

摘要

A step board (1) includes a rear wheel (13) and a front turning gudgeon along a horizontal direction. A multi-speed gearing set extends upwardly to contact a rocking bar (15), and also extends downwardly so as to be engaged with a driving wheel. An Independent claim is also included for multi-speed gear set.