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:
Jun. 26, 2001
Filed:
Mar. 28, 1997
Applicant:
Inventors:
Tadao Takagi, Yokohama, JP;
Takatoshi Ashizawa, Kawasaki, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N 2/00 ;
U.S. Cl.
CPC ...
H02N 2/00 ;
Abstract
An ultrasonic motor includes a vibrator vibrating in conformity with a frequency voltage. A relative motion member effects relative vibration in conformity with the vibration of the vibrator. The vibrator is adapted to vibrate in a first vibration mode and a second vibration mode vibrating in a direction differing from the first vibration mode. The resonance frequency of the first vibration mode is higher than the resonance frequency of the second vibration mode.