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:
Oct. 18, 1988
Filed:
Aug. 07, 1987
Kazumasa Onishi, Nagaoka, JP;
Mikio Umeda, Nagaoka, JP;
Alps Electric Co., Ltd., , JP;
Abstract
An electrostriction motor provided with an oscillator having an electrostriction element bonded to an elastic solid, and a moving solid contacted with the phase boundary of the elastic solid of the oscillator. The electrostriction element is continuously polarized in the moving direction of said moving solid to include a directly-expanded and -contracted pole to which a cycle voltage is applied, and dependently-expanded and -contracted poles which are positioned on right and left sides of the directly-expanded and -contracted pole, and it is also polarized in such a way that the directly-expanded and -contracted pole and one of the dependently-expanded and -contracted poles have the same polarity, while the remaining dependently-expanded and -contracted pole has a polarity different from that of the directly-expanded and -contracted pole. Therefore, the electrostriction motor can be driven by a cycle voltage having a single phase, and its supply power circuit and wiring can be made simpler accordingly.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile