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:
Dec. 15, 1998
Filed:
Jun. 14, 1996
Michihiro Tobe, Yokohama, JP;
Tadao Takagi, Yokohama, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A vibration actuator is provided with a rectangular parallelepiped elastic member of which a surface bears electromechanical converting elements adhered thereto and a relative moving member maintained in pressure contact with the other surface of the elastic member. A driving voltage is applied to excite the electromechanical converting elements to generate, in the elastic member, a longitudinal vibration vibrating in a plane parallel to the surface of the elastic member contacting the relative moving member and a bending vibration vibrating in a direction crossing the contacting surface, thereby generating a relative motion between the elastic member and the relative moving member. The elastic member has working portions for adjusting the difference of the resonance frequencies of the longitudinal and bending vibrations.