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. 05, 1994
Filed:
Oct. 30, 1992
Applicant:
Inventors:
Takahiro Nishikura, Ikoma, JP;
Katsu Takeda, Osaka, JP;
Masanori Sumihara, Higashiosaka, JP;
Osamu Kawasaki, Tsuzuki, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310328 ; 310321 ; 310323 ;
Abstract
In a linear-type actuator where an elastic wave is excited upon the vibrator composed of a rod shaped elastic member and a piezo member so as to drive the moving member bought into pressure contact upon the vibrator, the present invention provides a linear-type actuator where the improvement of the driving efficiency and the simplification of the driving circuit can be achieved by the new driving principle.