초록 ▼

Step pedal apparatus includes a pair of step pedals pivotally connected to a frame. The frame supports a front wheel and a rear drive wheel. The step pedals are coupled to a shaft for rotating the shaft on their downward pivoting through a pair of one way clutches. The step pedals operate independen

Step pedal apparatus includes a pair of step pedals pivotally connected to a frame. The frame supports a front wheel and a rear drive wheel. The step pedals are coupled to a shaft for rotating the shaft on their downward pivoting through a pair of one way clutches. The step pedals operate independently of each other. The shaft is disposed between the step pedals and the rear wheel and is coupled to the rear wheel by a chain and a pair of sprockets. One sprocket is secured to and rotatable with the shaft and the other sprocket is coupled to the rear drive wheel. The step pedals are stabilized by a pair of arms coupled respectively to the step pedals and to the frame. The step pedals are indepedently coupled to the clutches by chains or cables extending between the frame and the clutches and rotate the clutches in response to the downward pivoting of the step pedals. A convex configuration of tracks in which the chains or cables move in response to the downward pivoting movement of the pedals provides smooth power strokes to the one way clutches.

대표청구항 ▼

Step pedal apparatus includes a pair of step pedals pivotally connected to a frame. The frame supports a front wheel and a rear drive wheel. The step pedals are coupled to a shaft for rotating the shaft on their downward pivoting through a pair of one way clutches. The step pedals operate independen

Step pedal apparatus includes a pair of step pedals pivotally connected to a frame. The frame supports a front wheel and a rear drive wheel. The step pedals are coupled to a shaft for rotating the shaft on their downward pivoting through a pair of one way clutches. The step pedals operate independently of each other. The shaft is disposed between the step pedals and the rear wheel and is coupled to the rear wheel by a chain and a pair of sprockets. One sprocket is secured to and rotatable with the shaft and the other sprocket is coupled to the rear drive wheel. The step pedals are stabilized by a pair of arms coupled respectively to the step pedals and to the frame. The step pedals are indepedently coupled to the clutches by chains or cables extending between the frame and the clutches and rotate the clutches in response to the downward pivoting of the step pedals. A convex configuration of tracks in which the chains or cables move in response to the downward pivoting movement of the pedals provides smooth power strokes to the one way clutches.