Title:
STATOR FOR ULTRASONIC MOTOR AND MANUFACTURE THEREOF
Document Type and Number:
Japanese Patent JP3117817
Kind Code:
B2
Abstract:
PURPOSE: To enhance rotational efficiency of rotor by increasing density at the oscillating section of at least stator formed through sintering, and to enhance torque and output while simplying manufacture of stator and reducing cost.
CONSTITUTION: This is a stator for an ultrasonic motor wherein AC voltage is applied on a piezoelectric element 10a to oscillate an annular stator 10 which then rotates an annular rotor 17 contacting therewith on the top surface thereof. The stator 10 is made of a sintered alloy and slits 15 are formed radially, at substantially constant intervals, in the top surface thereof to provide a pectinated oscillating section 16 wherein the oscillating section 16, in the direction perpendicular to the radial direction of the stator 10, is formed substantially in square.
Inventors:
Motoyasu Tanino
Yoshitaka Takemura
Takao Suzuki
Yoshitaka Takemura
Takao Suzuki
Application Number:
JP30419092A
Publication Date:
December 18, 2000
Filing Date:
November 13, 1992
Export Citation:
Assignee:
アスモ株式会社
株式会社デンソー
株式会社デンソー
International Classes:
B22F5/00; B22F5/10; H01L41/09; H02N2/00; H02N2/12; (IPC1-7): H02N2/00
Domestic Patent References:
| JP3198674A | ||||
| JP2197272A | ||||
| JP4109878A | ||||
| JP4109879A | ||||
| JP63143096U |
Attorney, Agent or Firm:
Hironobu Onda