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. 25, 2003
Filed:
Jun. 01, 2001
Shinji Koganezawa, Kawasaki, JP;
Tomoyoshi Yamada, Kawasaki, JP;
Yukihiro Uematsu, Kawasaki, JP;
Tadayoshi Noguchi, Toyohashi, JP;
Hisashi Nakano, Kosai, JP;
Ryuma Sakamoto, Souka, JP;
Junichi Inoue, Kosai, JP;
Tetsuya Suzuki, Aichi, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An actuator includes a shear-type piezoelectric element of predetermined thickness and an opposed electrode formed on two electrodes in spaced relationship on a base member. The opposed electrode is displaced in accordance with the direction of polarization of the shear-type piezoelectric element upon applying a voltage between the two electrodes. The opposed electrode thus constitutes an operating section of the actuator. The actuator can be incorporated as a part of the head actuator to constitute a head-positioning mechanism capable of displacing the head by a minuscule distance independently of the operation of the head actuator.