Driving device for a moving body

A driving device for a moving body comprising:

• a drive shaft normally rotated in one direction by a drive source;
• a follower shaft in engagement with said drive shaft to transmit a driving force to the moving body;
• first connecting means loosely mounted on said drive shaft to connect and disconnect the driving force of said drive shaft to said follower shaft;
• accumulator means for accumulating a backwardly moving force for said moving body by utilizing the movement of the moving body resulting from the rotation of said follower shaft in a forward direction;
• and
• one-way connecting means loosely mounted on said drive shaft to connect with said drive shaft only when a rotational speed of said follower shaft in the backward direction is greater than that of the drive shaft;
• said follower shaft being driven into reverse rotation by said accumulator means upon disconnection of said first connecting means and the speed of the reverse rotation of said follower shaft being controlled by operation of said one-way connecting means so as not to exceed the driving speed of said drive shaft, thereby maintaining a constant rotational speed thereof.