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US 2008/0297003 A1Published application
Ultrasonic Motor
AssigneePENTAX Corporation
InventorYuichi KUROSAWA
Life of this patent
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Abstract
An ultrasonic motor includes a stator that includes a comb body with a plurality of circumferentially-arranged comb-like projections and a piezoelectric body integrally mounted on the comb body, a rotor rotatable with respect to the stator, the rotor having a contact surface that establishes pressure contact with the stator, and a resin film formed with predetermined hardness on the contact surface of the rotor, the resin film containing a solid lubricant.
Claims12
An ultrasonic motor, comprising:
- a stator that includes a comb body with a plurality of circumferentially-arranged comb-like projections and a piezoelectric body integrally mounted on the comb body;
- a rotor rotatable with respect to the stator, the rotor having a contact surface that establishes pressure contact with the stator;
- and
- a resin film formed with predetermined hardness on the contact surface of the rotor, the resin film containing a solid lubricant.
1 more element
An ultrasonic motor, comprising:
- a stator that includes a comb body with a plurality of circumferentially-arranged comb-like projections and a piezoelectric body integrally mounted on the comb body;
- a rotor rotatable with respect to the stator, the rotor having a contact surface that establishes pressure contact with the stator;
- and
- a resin film formed from one of phenol epoxy resin and polyamide-imide resin with predetermined hardness more than pencil hardness “F” on the contact surface of the rotor, the resin film containing a solid lubricant.
1 more element
Dependencies are inferred from the claim text.