초록 ▼

A power assist apparatus which includes a battery pack that connects with a motor housing with the battery pack being removably mounted on the frame of the bicycle and the motor housing being mounted on a mounting plate which is carried by one of the support wheels of the bicycle. The power assist a

A power assist apparatus which includes a battery pack that connects with a motor housing with the battery pack being removably mounted on the frame of the bicycle and the motor housing being mounted on a mounting plate which is carried by one of the support wheels of the bicycle. The power assist apparatus is designed to not only assist in the manual operation of the bicycle but also as a sole source of power for the bicycle. The mounting plate is to be affixed to the frame of the bicycle upon the desired location being selected for the mounting plate. The motor assembly operates a drive gear, pulley or sprocket which connects to a driven gear, pulley or sprocket which is mounted in conjunction with one of the support wheels of the bicycle. The motor housing may be disconnectable from the mounting plate as also the battery pack is capable of being disengaged from the frame of the bicycle permitting the bicycle to be used as a conventional bicycle without the power assist apparatus. The motor assembly is indexed to the axle of the support wheel maintaining accurate alignment in all operating conditions and upon repeated engagements and disengagements of the support wheel from the bicycle frame.

대표청구항 ▼

[ What is claimed is:] [1.] In combination with a bicycle, said bicycle having a frame mounted on at least one support wheel, said support wheel being rotatable within a plane of rotation, said support wheel having an axle with said axle being mounted on said frame, said axle having a first axis of

[ What is claimed is:] [1.] In combination with a bicycle, said bicycle having a frame mounted on at least one support wheel, said support wheel being rotatable within a plane of rotation, said support wheel having an axle with said axle being mounted on said frame, said axle having a first axis of rotation which is perpendicular to said plane of rotation, a power assist apparatus to be mounted in conjunction with said bicycle, said power assist apparatus comprising:a driven gear mounted on said support wheel, said driven gear defining a rotational plane, said rotational plane being parallel to said plane of rotation, said driven gear having a center point, said center point coinciding with said first axis of rotation;a motor assembly having an output shaft, said motor assembly being mounted on a mounting plate, said mounting plate being supportingly mounted on said axle, said axle being freely rotatable relative to said mounting plate, said mounting plate being fixed by securing means to said frame, said output shaft having a second axis of rotation, a drive gear mounted on said output shaft, said drive gear being in engagement with said driven gear, said drive gear being indexed to said axle by said second axis of rotation being parallel and spaced from said first axis of rotation, said motor assembly being electrically operated to rotate said drive gear and hence said driven gear which produces a power assist to rotate said support wheel; andsaid mounting plate being pivotally adjustable to various angular positions about said first axis of rotation prior to being affixed to said frame by said securing means to one of said angular positions.