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US 4,860,859 AGranted
Brake device
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsKouhei Yamatoh, Masami Ogura
Life of this patent
Estimating the term…
Abstract
A brake device comprising an ultrasonic motor having a rotor rotatable by an elastic traveling wave generated by a piezoelectric vibrator on a stator of the motor, and torque converting means for converting a rotating torque produced by said ultrasonic motor into a pressing force for pressing a friction member against a member to be braked, which pressing force is transmitted to said friction member.
Claims9
A brake device arranged to press a friction member against a member to be braked, thereby applying a braking action to said member to be braked, said brake device comprising;
- an ultrasonic motor including a stator, a rotor and a piezoelectric vibrator mounted on the stator to generate an elastic travelling wave to drive said rotor;
- and
- torque converting means for converting a rotating torque produced by said ultrasonic motor into a pressing force for pressing the friction member against the member to be braked, said pressing force being transmitted to said friction member.
A brake device comprising:
- an ultrasonic motor including a stator having a pieozelectric vibrator mounted thereon and a rotor driven by an elastic traveling wave generated from said piezoelectric vibrator;
- torque converting means having a speed reducing gearing for increasing a torque, in which a rotating torque produced by said ultrasonic motor is converted by said torque converting means into a pressing force for pressing a friction member against a member to be braked, said pressing force being transmitted to said friction member.
Dependencies are inferred from the claim text.