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AssigneesHolon Co., Ltd., Riken, KYOCERA Corporation
InventorsMasaya Iwaki, Tomoko Iwaki, Koji Akashi, Norimichi Anazawa, Ken-ichi Kobayashi
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[Purpose] The present invention relates to an ultrasonic motor having a stator which includes a piezoelectric element for moving a rotor in a prescribed direction by applying a predetermined ultrasonic voltage thereto, and the rotor which is fixed to the stator by a frictional force, and a method for manufacturing an ultrasonic motor, and it has for its purpose to attain decrease of dust appearance by enhancement of a wear resistance, a different hardness, or the like in such a way that a contact part of at least either of a stator and a rotor which constitute the ultrasonic motor is irradiated with ions. [Constitution] An ultrasonic motor characterized in that either or both of contact parts of a stator and a rotor is/are irradiated with ions, thereby to enhance a wear resistance of the contact part or parts.
In an ultrasonic motor having a stator which includes a piezoelectric element for moving a rotor in a prescribed direction by applying a predetermined ultrasonic voltage thereto, and the rotor which is fixed to the stator by a frictional force;
In a method for manufacturing an ultrasonic motor which has a stator that includes a piezoelectric element for moving a rotor in a prescribed direction by applying a predetermined ultrasonic voltage thereto, and the rotor that is fixed to the stator by a frictional force;
Dependencies are inferred from the claim text.