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. 17, 2019
Filed:
Jun. 13, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Kazufumi Onuma, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A vibration drive device giving an appropriate click feeling when an operation member driven by a vibration actuator is manually operated. A controller applies, to a piezoelectric element, a drive signal for exciting, in an elastic body joined to the piezoelectric element, only a first vibration perpendicular to a contact surface between the elastic body and a driven element, or the first vibration and a second vibration parallel to the contact surface. When the position of the operation member is outside a driving section, only the first vibration is excited, whereas when within the driving section, the first vibration and the second vibration are excited so as to make the position closer to a target position set within the driving section. Application of the drive signal is stopped when the position is in a section in the driving section for a predetermined time period.