Patent ID: 9181994
Filing Date: 2015-11-10
Classification: B60B,B60Y,F16D

Abstract:
1. A freewheel hub for a bicycle, comprising: a hub axle; a hub housing rotatably mounted on the hub axle; a sprocket arrangement rotatably mounted on the hub axle; and a freewheel coupling arranged between the hub housing and the sprocket arrangement, the freewheel coupling having a first coupling ring which couples to the hub housing and a second coupling ring which couples to the sprocket arrangement; the first and second coupling rings each having respective tooth systems facing one another which are arrangeable into and out of mutual torque-transmitting engagement, at least one of the first and second coupling rings axially displaceable relative to the hub axle; the first and second coupling rings each having a respective stepped wall thickness profile with a section of greater wall thickness and a section of reduced wall thickness, wherein the respective tooth systems in a central radial region of each of the first and second coupling rings is formed in the section of greater wall thickness; the section of reduced wall thickness of one of the first and second coupling rings formed radially inside the tooth system and the section of reduced wall thickness of the other of the first and second coupling rings formed radially outside the tooth system.