Patent ID: 9458909
Filing Date: 2016-10-04
CPC Classification: F16D,F16H

Claim Text:
1. A drive power transmission device comprising: a plurality of frictional engagement elements between an input shaft and an output shaft that are capable of forming a first drive power transmission state, in which a first frictional engagement element is engaged while a second frictional engagement element is disengaged, and a second drive power transmission state, in which the first frictional engagement element is disengaged while the second frictional engagement element is engaged, the first frictional engagement element and the second frictional engagement element overlapping axially, and being layered radially in an inner/outer arrangement, a temperature sensor positioned at a periphery of the radially outermost frictional engagement element; and a lubricating oil pathway formed such that a lubricating oil for cooling both of the first and second frictional engagement elements passes through both of the first and second frictional engagement elements in a radial direction from inside of both of the first and second frictional engagement elements to the temperature sensor.