Patent ID: 7708666
Filing Date: 2010-05-04
Classification: B62M

Abstract:
1. An internal transmission hub assembly comprising: a stationary hub shaft configured to non-rotatably attach to a bicycle frame, the stationary hub shaft defining an axis of rotation; a shift control sleeve disposed adjacent to the stationary hub shaft for limited circumferential movement relative to the stationary hub shaft about the axis of rotation, the shift control sleeve configured to control operation of at least one sun gear disposed about the stationary hub shaft, the shift control sleeve including a base sleeve and at least one pawl control arm, the base sleeve having a first end and a second end; a sleeve guide rotatably disposed about a first portion of the stationary hub shaft, the sleeve guide supporting the first end of the base sleeve of the shift control sleeve, the first end of the base sleeve is welded to the sleeve guide; and a shifting key guide rotatably disposed about a second portion of the stationary hub shaft supporting the second end of the base sleeve of the shift control sleeve, the second end of the base sleeve is welded to the shifting key guide.