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:
Aug. 16, 1983
Filed:
Feb. 11, 1982
Susumu Osaka, Machida, JP;
Minoru Toda, Machida, JP;
RCA Corporation, New York, NY (US);
Abstract
A rotative motor includes a member mounted to rotate freely. A plurality of piezoelectric bimorph elements are radially secured at one end to a support in a two-staged shape comprising upper and lower arrays of the elements. A plurality of elastic members connect the free end of each one of the upper elements with the free end of a different one of the lower elements. Each pair of inter-connected elements is excited from a source of alternating current so that the free ends of the respective elements vibrate ninety degrees out of phase. The central point of each elastic member connected between the free ends of the one upper and one lower elements is in frictional contact with the rotatable member. The central point of each elastic member exhibits a closed loop path, imparting a rotary motion to the rotatable member.