Stationary bike

A stationary bike comprising:

• a first shaft fixed on a frame, having a pedal rod respectively fixed at two sides of said first shaft, a first transmitting wheel fixed firmly on said first shaft to rotate together, and a flywheel fixed on said first shaft beside said first transmitting wheel:
• a second shaft fixed on said frame and located opposite to said first shaft, having a second transmitting wheel in line to said first transmitting wheel, a one-way bearing fitted between said second transmitting wheel and said second shaft to keep said second transmitting wheel in place, said second shaft rotating clockwise in case of said one-way bearing rotating clockwise, said second shaft being immovable in case of said one-way bearing rotating counterclockwise;
• said transmitting wheel connected to said first transmitting wheel by means of a moving member;
• a third, a fourth and a fifth transmitting wheel fixed orderly of said second shaft, said third transmitting wheel and said second transmitting wheel fitted on said second shaft with the same one-way bearing and fixed with each other to rotate together, said fourth and said fifth transmitting wheel rotating together with said second shaft, and said fifth transmitting wheel connected to said flywheel fixed on said first shaft:
• a third shaft also fixed on said frame and located in a space between said first and said second shaft, a sixth transmitting wheel fixed on said third shaft in line to said third transmitting wheel on said second shaft, a one-way bearing fitted between said sixth transmitting wheel and said third shaft to keep said sixth transmitting wheel in place, said third shaft being immovable in case of said one-way bearing rotating clockwise;
• said third shaft rotating counterclockwise in case of said one-way bearing rotating counterclockwise;
• further, a seventh transmitting wheel fixed on said third shaft and engaging with said fourth transmitting wheel on said second shaft so as to let said seventh and said fourth transmitting wheel rotate in opposite direction:
• said flywheel always rotating clockwise whether said pedal rods are rotated clockwise or counterclockwise, without need of waiting said flywheel stop gradually with inertia and then said pedal rods rotated counterclockwise.