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:
Apr. 14, 2026
Filed:
Jun. 04, 2024
Yoichi Itagaki, Tokyo, JP;
Hiroyuki Ujiie, Tokyo, JP;
Shun Tsuchiya, Tokyo, JP;
Fumiko Wako, Tokyo, JP;
Yoichi Itagaki, Tokyo, JP;
Hiroyuki Ujiie, Tokyo, JP;
Shun Tsuchiya, Tokyo, JP;
Fumiko Wako, Tokyo, JP;
MITSUMI ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A driving device includes a resonance unit that has a pair of arm portions and resonates with vibration of a piezoelectric element, and a moving portion that abuts the pair of arm portions and is moved relative to the resonance unit due to vibration of the resonance unit, wherein a portion of the resonance unit and a portion of the moving portion that abut each other are each made of ceramic, and each of the pair of arm portions has, as a portion that abuts the moving portion, a sphere made of ceramic.