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:
Sep. 29, 2015
Filed:
May. 28, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Yuya Yamamoto, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for driving an ultrasonic motor includes setting an upper limit rotation speed that is lower than a rotation speed at a resonance frequency at a lowest temperature of a predetermined operating temperature range and a lower limit frequency that is more than or equal to a resonance frequency at a highest temperature of the operating temperature range, and, when the ultrasonic motor starts, a rotation speed of the ultrasonic motor becomes lower than the upper limit rotation speed and the ultrasonic motor is driven with a driving frequency which is higher than the lower limit frequency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile