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. 07, 1990
Filed:
Dec. 16, 1988
Applicant:
Inventor:
Akio Kumada, Tokyo, JP;
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310323 ;
Abstract
A piezoelectric motor comprising a movable element having a first flat surface, vibration elements formed by combination of at least one twisting vibration member vibrating in a twisting manner and at least one piezoelectric element acting to vibrate the twisting vibration member. The vibration elements have a second flat surface adapted to abut against the first flat surface so that the movable element can be driven by surface contact between the first flat surface and the second flat surface.