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:
Mar. 27, 2001
Filed:
Apr. 09, 1999
Applicant:
Inventor:
Masayuki Ueyama, Takarazuka, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N 2/00 ; H01L 4/108 ;
U.S. Cl.
CPC ...
H02N 2/00 ; H01L 4/108 ;
Abstract
A piezoelectric transducer of a new laminated structure is provided that is easy to fabricate, produces a large amount of motive energy and has high mechanical strength. Electrodes are installed on one of the surfaces of respectively a first and a second piezoelectric element formed in a thin shape, a second piezoelectric element formed without an electrode is laminated onto the top of the surface of the first piezoelectric element having an electrode to form a laminated piece. The laminated piece is wound to form a tube or folded to form a rod. The tube or rod-shaped laminate is then baked and polarized to produce a piezoelectric transducer.