Patent attributes
A fluid transmission device is capable of transmitting power between a first rotating element and a second rotating element by kinetic energy of a fluid and capable of transmitting power between the first rotating element and the second rotating element via a lock-up clutch. The device includes a first damping mechanism and a coupling mechanism. The first damping mechanism is disposed in a path for transmitting power between the first rotating element and the second rotating element via a lock-up clutch for restraining variations in rotation of the second rotating element. The coupling mechanism is configured to release the first damping mechanism from the first rotating element and the second rotating element when the lock-up clutch is released and couple the first damping mechanism to the first rotating element and the second rotating element when the lock-up clutch is engaged.
