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. 29, 1990
Masaharu Shioya, Akikawa, JP;
Takahiro Mizushina, Tachikawa, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
This carrier apparatus employs an ultrasonic actuator comprising a piezoelectric actuator made of a piezoelectric element which extends and contracts in the radial direction of a cylindrical vibrator in the inner space of the cylindrical vibrator as a power source. This ultrasonic actuator elastically deforms the cross section of the peripheral wall of the cylindrical vibrator into an elliptical shape by the extension and contraction of the piezoelectric actuator, and transmits a driving force in a tangential direction to an article pressed on a predetermined position on the outer peripheral surface of the cylindrical body by utilizing the circumferential and radial transformations (or displacements) generated on the outer peripheral surface of the cylindrical vibrator upon elastic deformation of the elliptical shape.