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:
Dec. 26, 2000
Filed:
Apr. 07, 1998
Applicant:
Inventors:
Masahiko Komoda, Toyokawa, JP;
Toshiaki Miyamoto, Toyohashi, JP;
Kazumasa Kubota, Toyohashi, JP;
Motoyasu Yano, Toyohashi, JP;
Assignee:
Asmo Co., Ltd., Kosai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N / ;
U.S. Cl.
CPC ...
31032313 ; 31032312 ;
Abstract
An ultrasonic motor having a stator in which at least a longitudinal vibration is generated and a rotor rotatably mounted on the stator. Slanted slits are formed on the cylindrical surface of the rotor, which convert a part of the longitudinal vibration in the stator into a twisting vibration that gives the rotor a rotational force. The slits are slanted to the rotational direction of the rotor. The rotor is rotated at a higher speed because of the slits. The form of the slits may be selectively varied according to desired characteristics of the ultrasonic motor.