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:
Feb. 27, 1996
Filed:
Mar. 12, 1993
Hajime Fukui, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A frequency signal control circuit for a vibration type motor apparatus, which uses as a driving force a vibration generated by application of a frequency signal to an electro-mechanical energy conversion element thereof, inhibits a shift operation of the frequency signal to a lower frequency when a detector detects that a voltage level of a power supply is less than or equal to a predetermined first level, and shifts the frequency to a higher frequency when the detector detects that the voltage level is less than or equal to a second level, the second level being lower than the first level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile