Patent 7850556 was granted and assigned to Campagnolo on December, 2010 by the United States Patent and Trademark Office.
In a bicycle equipped with front derailleur and rear derailleur controlled each by a corresponding electrical actuator, there is provided an intermediate connecting unit, mounted underneath the crank case of the bicycle, having an input and two outputs connected to the two electrical actuators of the derailleurs. The connections can be permanent or detachable.