Patent ID: 8857840
Filing Date: 2014-10-14
Classification: B62K,B62M,Y10T

Abstract:
1. An improved drive system for a personal vehicle comprising: a frame having a steerable front wheel and a rear wheel connected to a drive axle; a crank arm connected to said drive axle by a drive linkage so that when said crank arm rotates, said drive axle causes said rear wheel to rotate thereby providing locomotion; a roller rotatably attached to said crank arm; a pedal pivotally attached to said frame having a cavity for receiving said roller; a contoured wear bar carried by an upper surface of said cavity for contacting the perimeter of said roller; a major arch included in said contoured wear bar contacting said roller when said pedal is on a down stroke; and, a major front slope included in said wear bar for contacting said roller when said pedal is in its upstroke to place the pedal at its highest most position.