Patent ID: 8215654
Filing Date: 2012-07-10
Classification: B62M,Y10T

Abstract:
1. A linear to rotary transfer drive system for increased torque on a standard bicycle, the transfer drive system comprising: a first linear drive sprocket with a one-way clutch and adapted for mounting on one end of a rotary drive shaft on a bike frame; a second linear drive sprocket with a one-way clutch and adapted for mounting on an opposite end of the rotary drive shaft; a first linear driven idler pulley and a second linear driven idler pulley mounted on an upper pulley shaft, the upper pulley shaft adapted for mounting on the bike frame and disposed above the rotary drive shaft and at a right angle thereto; an endless linear drive chain mounted on the first and second linear drive sprockets and the first and second linear driven idler pulleys; a first pedal attached to the linear drive chain and disposed on one side of the bike frame and between the first linear drive sprocket and the first linear driven idler pulley; and a second pedal attached to the linear drive chain and disposed on an opposite side of the bike frame between the second linear drive sprocket and the first linear driven idler pulley.