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:
Apr. 01, 1997
Filed:
Jun. 11, 1996
Applicant:
Inventor:
Fumikazu Nishikawa, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N / ;
U.S. Cl.
CPC ...
310316 ; 310323 ;
Abstract
This invention relates to a vibration driven motor apparatus and, more particularly, provides a motor apparatus which has a mode for setting the rate of change in frequency in correspondence with the motor speed, and a mode for setting the rate of change in correspondence with the difference between a resonance state and a current vibration state when the frequency of a driving frequency signal in the motor is changed, and selects one of these modes in correspondence with the motor speed.
Nishikawa, Fumikazu. (1997). Vibration driven motor apparatus (U.S. Patent No. 5616979). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5616979
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile