Patent 9302738 was granted and assigned to Pinion on April, 2016 by the United States Patent and Trademark Office.
A transmission unit for a vehicle driven by muscle power. The transmission unit has one through shaft and one output shaft, as well as at least two sub-transmissions and at least one intermediate shaft. In the transmission unit at least one of the intermediate shafts and the output shaft is formed as a hollow shaft which is arranged coaxially to another shaft of the transmission unit.