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. 11, 2020
Filed:
Apr. 12, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Yuki Oda, Yokohama, JP;
Hiroyuki Seki, Oyama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A vibration actuator is capable of bringing a vibration body into press contact with a driven body stably for an extended period while reducing obstruction of excitation of vibration in the vibration body by the pressing force. The driven body is in contact with the vibration body by a pressing force given by a pressing member. A vibration isolation member is arranged between the vibration body and the pressing member. The vibration body and the driven body move relatively by vibrations in first and second vibration modes that are excited in the vibration body by applying alternating voltage to a piezoelectric device on the vibration body. Face pressure that acts on the piezoelectric device by the pressing force from the pressing member in first and second areas that respectively include nodal lines in the first and second vibration modes and their vicinities is higher than that in other areas.