Patent ID: 7166051
Filing Date: 2007-01-23
Classification: F16H,Y10T

Abstract:
1. A speed transmission apparatus, arranged between a drive engine and a drivable receiving device, comprising a rotary casing ( a first epicyclic gear train ( said first and said second epicyclic gear trains forming a double gear train located between said driving input connected to the drive engine and an output shaft ( the first epicyclic gear train comprising a first sun gear ( the second epicyclic gear train comprising a second sun gear ( a first rotation transmission which is arranged at an intermediate output of the first epicyclic gear train, and which comprises said interposed output shaft ( a second rotation transmission arranged at an intermediate input of second epicyclic gear train and which comprises said interposed input shaft ( a first electric motor brake ( control means electrically connected to and controlling the first and second motor brakes so as to be able continuously to modify the speed of rotation of said interposed output and input shafts on which the electric motor brakes act and, thus, also the transmission ratio between said input rotation speed and said output rotation speed.