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:
Feb. 16, 2010
Filed:
Jan. 11, 2007
Ki-tag Jeong, Hwaseong-si, KR;
Woo-sung Kim, Seoul, KR;
Ki-tag Jeong, Hwaseong-si, KR;
Woo-sung Kim, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An actuator apparatus used with a hard disk drive. The actuator apparatus includes a pivotable actuator arm, a magnetic head mounted onto a first end of the actuator arm, an overmold connected to a second end of the actuator arm and including a metal piece, a voice coil motor (VCM) having a coil coupled to the overmold and at least one magnet positioned to face the coil, and a stopper positioned to be spaced apart at a predetermined interval from the overmold of the actuator arm when the magnetic head is positioned at a parked position, to limit pivoting of the actuator arm. Specifically, the stopper may be positioned to be spaced at the interval from the overmold of the actuator arm positioned at a position where a torque acting on the actuator arm due to the metal piece and the magnet is substantially 0. Accordingly, the torque acting on the actuator arm within the interval is in an opposite direction to a direction in which the actuator arm pivots to a parked position, thereby reducing the pivoting speed of the actuator arm. Thus, noise and impulse caused by the contact of the actuator arm and the stopper reduce.