Patent ID: 9441719
Filing Date: 2016-09-13
CPC Classification: F16D,F16H

Claim Text:
1. A lock-up device for a torque converter, the lock-up device being disposed between a front cover and a turbine in the torque converter to mechanically connect the front cover and the turbine, the lock-up device comprising: a clutch part disposed in a power transmission path from the front cover to the turbine, the clutch part being configured to be in a clutch-on state of transmitting a power from the front cover to the turbine in a set posture; and a release part configured to be actuated by a hydraulic pressure being increased in a space on a turbine-side of the piston to turn the clutch part from the clutch-on state to a clutch-off state and to block transmission of the power from the front cover to the turbine, the clutch part including the release part including a piston configured to release pressing of the pressing member when the hydraulic pressure is applied to the release part.