Patent ID: 6938512

Claim:
A lubricating system for an automatic transmission adapted to change a speed change ratio between an input shaft of the transmission and an output shaft connected to an axle in response to activation of a driving power source, the automatic transmission comprising at least one planetary gear set and plural friction engagement elements that are adapted to be engaged or disengaged, the at least one planetary gear set comprising a sun gear connected to the input shaft to rotate together with the input shaft, a ring gear, at least one rotatable pinion gear arranged between the sun gear and the ring gear, and a planetary carrier supporting the at least one pinion gear for rotation and fixed to a casing of the transmission, the lubricating system comprising: an oil pump which pumps oil to generate oil pressure in response to the activation of the driving power source; and an introducing passage which is provided at the planetary carrier and receives the oil from the oil pump and directs the oil for purposes of lubrication.