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. 06, 1993
Filed:
Oct. 08, 1991
Tamotsu Iijima, Yamanashi, JP;
Nisca Corporation, Yamanashi, JP;
Abstract
An ultrasonic actuator comprising an elastic vibration member of a rectangular plate is excited by vibrators attached to at broadest excitation surfaces, thereby concurrently inducing longitudinal and bending vibrations. Extraction of vibrational motion from the vibration member being excited to vibrate can be carried out by pressing a moving object against one of the most slender planes perpendicular to the excitation surfaces. Since the length in the direction in which the moving object is pressed against the vibration member is sufficiently larger, the vibrational characteristics of the vibration member can be prevented from being changed, and therefore, the moving object can be driven with high efficiency.