Patent ID: 7474949

Claim:
A continuously variable transmission, comprising: a power train whose speed ratio is variably changeable; a control valve assembly which outputs an oil pressure signal with which the speed ratio of said power train is changeable; a mechanical feedback mechanism including an actuator for speed-change control, operable in accordance with an electric signal, said actuator having a solenoid section, a speed-change control valve which controls an oil pressure to be supplied to said power train, a speed ratio sensor moved in mechanical relation to a part of said power train in accordance with a change in the speed ratio of said power train, and a linking member for linking said actuator, said speed-change control valve and said speed ratio sensor; and an oil bath containing oil in which only at least a part of the solenoid section of said actuator is immersed, said oil bath being disposed to said control valve assembly and separate from an oil pan containing oil which is to be supplied into the power train to lubricate parts of the power train.