Multi-tooth pawl type gearing mechanism

摘要

A multi-tooth pawl type gearing mechanism for a freewheel of a bicycle wheel hub includes a cassette body having an inner rotor member with an axis. A gear ring shaped and dimensioned for attachment to a wheel hub of a bicycle wheel is also provided allowing for the transferring of power from the gear ring to the bicycle wheel. The gear ring surrounds the inner rotor member and includes an inner surface. A series of pawls, wherein each pawl includes a first end and a second end, are positioned between the inner rotor member and the gear ring for transmitting power therebetween in a unilateral direction as the inner rotor member is rotated. When the inner rotor member is rotated in a first direction the pawls are brought into engagement with the inner surface of the gear ring thereby transmitting rotation of the inner rotor member to the gear ring and when the inner rotor member is rotated in an opposite second direction the pawls slide over the inner surface of the gear ring and rotation of the inner rotor member is not transmitted to the gear ring.