Patent ID: 8840127
Filing Date: 2014-09-23
Classification: B62M,F16H,Y10T

Abstract:
1. A bicycle, comprising: a frame; a wheel attached to the frame; a spiral cone pulley having an axially tapered profile attached to the bicycle, the spiral cone pulley including a pulley axis of rotation, the spiral cone pulley including the shape of a disk having a first pulley side and a second pulley side, the first pulley side including the axially tapered profile; a first linkage guide disposed on the first pulley side, the first linkage guide forming a first guide channel, the first linkage guide advancing radially toward the pulley axis of rotation along the axially tapered profile of the first pulley side in the axial direction away from the second pulley side; a first tension linkage disposed on the spiral cone pulley, wherein the first tension linkage is received in the first guide channel; and a second linkage guide disposed on the first pulley side, wherein the second linkage guide includes a second guide channel, wherein the wheel is configured to turn when the first tension linkage is pulled in a direction away from the wheel.