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. 21, 2011
Filed:
May. 13, 2010
Kazuhiro Shibatani, Sakai, JP;
Kazuhiro Shibatani, Sakai, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
A vibratory driving devicecomprising a shaft-like driving member, a electromechanical transducerwhich can incline the driving memberand which can also displace the driving memberin the axial direction of the driving member, a movable memberwhich slidably engages on the driving member, a driving circuitwhich can apply to the electromechanical transducera periodical frictional driving voltage to displace slidingly the movable member with respect to the driving member and an inclination driving voltage inclining the driving member, a waveform determinerwhich determines a rising condition of a voltage or a current of the electromechanical transducerwhen the inclination driving voltage is applied, and a position estimator which estimates a position of the movable memberbased on the rising condition of a voltage or a current.