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:
Sep. 09, 2003
Filed:
Mar. 05, 2002
Fujitsu Limited, Kawasaki, JP;
Abstract
A piezoelectric actuator set includes a pair of elongated piezoelectric actuators. The elongated piezoelectric actuators establish the standard attitude of a head slider when no electric signal is supplied to the piezoelectric actuator set. When the electric signal is applied to the piezoelectric actuator set, the tip ends are pulled back toward the base ends in the elongated piezoelectric actuators. The piezoelectric actuator set generates a couple for driving the head slider for rotation around the rotational axis only in a predetermined direction from the standard attitude. The moment of inertia can be reduced in the head slider during rotation as compared with the case where the head slider is moved based on a swinging movement. The natural frequency can be raised in the vibration system comprising the head slider and the piezoelectric actuator set. The frequency of the electric signal or servo signal can be set over a wider frequency range.