The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2002
Filed:
Feb. 02, 2001
Takashi Fukui, Aichi-ken, JP;
Kouichi Ikeda, Okazaki, JP;
ASMO Co., Ltd., , JP;
Abstract
An ultrasonic motor includes a stator, which includes a piezoelectric element, and a rotor, which opposes the stator. The piezoelectric element vibrates the stator to rotate the rotor. The rotor has an annular thin section. An elastic ring is secured to the thin section. The mass of the elastic ring is selected from a predetermined range of masses. The motor speed at which a predetermined level of noise is produced by the motor is substantially constant for the range of the masses. This reliably damps undesirable vibration of the motor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile