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:
May. 10, 1988
Filed:
Dec. 22, 1986
Tsutomu Ueyama, Yawata, JP;
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Abstract
A piezoelectric motor constructed so as to convert deformation movements of a plurality of electrostrictive elements to a rotatory movement and then to output it through an output shaft as rotary power at a low speed. The piezoelectric motor includes a plurality of electrostrictive elements, a disk-shaped precessional movement plate supported to be driven by the deformations of these electrostrictive elements and to perform a precessional movement without rotation on its axis, a rotary plate arranged to be driven at a reduced speed by a circumferential difference between circular paths described by contact under pressure, at a precessional angle .theta. with a peripheral portion of the precessional movement plate. An output shaft is operatively connected to the rotary plate to deliver output power.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile