Stepper with electrical generator

Abstract

A stepper with electrical generator comprises a base having a pair of frames at front respective sides to receive a left and a right rod. A transmission gear is secured to on one end of a shaft pivoted at respective front ends of the left and right rods. The transmission gear meshes with a driven wheel which is secured on a transmission shaft pivoted to the base. The transmission shaft has an electrical generator secured at one end thereof. A pair of supporting plates extends upwardly from two sides of the base, respectively, with a recess on top thereof adapted to receive a linking unit thereon. The linking unit comprises a pair of cranks at respective ends with their end portions against the bottom of the left and right rods, respectively. The base further comprises a fixed rod at center portion, and the left and right rods also comprise an auxiliary rod, respectively. The fixed rod is connected with the auxiliary rods by elastic rubbers.

I claim:  
     
         1 . A stepper with electrical generator comprising a base having a pair of frames at the front respective sides with a left rod and a right rod connecting thereat, a transmission gear being secured to one end of a shaft pivoted at respective front ends of said left rod and said right rod, said transmission gear being meshed with a driven wheel secured at the center position of a transmission shaft pivoted to the front end of said base, said transmission shaft of said driven wheel having one end secured with a generator; a pair of supporting plates being secured and extending upwardly from two sides of said base, said supporting plates comprising a recess on the top portion of each to receive a linking unit seating thereon, said linking unit comprising a shaft with a pair of cranks secured at respective ends and in opposing directions with each other, one end of each said crank being against the bottom portion of said left rod and said right rod, respectively; said base comprising a fixed rod at center portion thereof, and both of said left rod and said right rod comprising an auxiliary rod, each of said auxiliary rods having connected with one end of an elastic rubber, and the other end of each said elastic rubber being secured to said fixed rod of said base, wherein when a user pressing said left pedal or said right pedal, said cranks being linked to move up and down, thus linking said transmission gear to rotate, which in turn linking said driven wheel and said transmission shaft to rotate, thus bringing said generator to generate electricity.  
     
     
         2 . The stepper with electrical generator, as recited in  claim 1 , wherein said generator comprises a magnet and a coil, and said magnet rotates with respect to said coil to generate electricity.  
     
     
         3 . The stepper with electrical generator, as recited in  claim 1 , wherein said transmission gear comprises a one-way bearing inside and is limited to rotate towards one direction by said one-way bearing.