TU V NGUYEN, MD
Anesthesiologist Assistant at Elmwood Ave, Rochester, NY

6744597, Jun 1, 2004

Oct 29, 1999

09/430463

Tu Nguyen - San Jose CA
Haeng Soo Lee - Santa Clara CA
Woo-Sung Kim - Santa Clara CA

Samsung Electronics Co., Ltd.

G11B 1732

3602345

An actuator beam that can be incorporated into an actuator arm assembly of a hard disk drive. The actuator beam may include a dynamic absorber that extends from a distal end of the beam. The dynamic absorber may attenuate any resonant displacement in the actuator beam induced by a shock load that is applied to the hard disk drive.

5979249, Nov 9, 1999

Jun 9, 1998

9/093936

Ja Choon Koo - Santa Clara CA
Tu Nguyen - San Jose CA
Wilson Long - San Jose CA

Samsung Electronics Co., Ltd. - Suwon

G11B 500

73862541

An actuator resonance tester is provided for testing the resonance of an actuator arm in a hard disk drive device. The tester includes an actuator arm, a pivot, one or more weights, a voice coil, a voice coil motor, an accelerometer, and a processor. The one or more weights are formed on the actuator arm to simulate the mass of at least one read/write head. The base and the test housing are affixed to either end of the pivot to provide it with proper boundary conditions to simulate the boundary conditions of a fully-assembled hard disk drive device. The voice coil and the voice coil motor move the actuator arm rotationally around the pivot. The accelerometer is placed on the actuator arm to measure the horizontal acceleration of the actuator arm. The processor determines the resonance of the actuator arm based on the arm's measured horizontal acceleration. In this way, the resonance of the actuator arm can be tested without the need to construct the entire hard disk drive device.

7724479, May 25, 2010

Aug 9, 2006

11/502054

Tu Nguyen - San Jose CA, US
Tho Pham - Milpitas CA, US

Samsung Electronics Co., Ltd. - Suwon, Kyungki-Do

G11B 5/55

3602659, 360 9702, 360 9801

Actuator arm includes an island coupling through a mote to at least two of actuator base, first and second actuator arm bridge. Head stack including at least one actuator arm. Head stack assembly including head stack. Hard disk drive including head stack assembly. Manufacturing methods for actuator arm, head stack, head stack assembly, and hard disk drive, and the products of these processes.

6028745, Feb 22, 2000

Oct 6, 1997

8/944873

Tu Nguyen - San Jose CA
Duane Huynh - San Jose CA
Tho Pham - Milpitas CA

Samsung Electronics Co., Ltd.

G11B 2122, G11B 554

360105

A head restraint that prevents head slapping within a hard disk drive. The disk drive includes a disk that is rotated by a spindle motor. The drive also has a magnetic recording head that is mounted to a flexure arm and magnetically coupled to the disk. The head restraint includes a finger that is moved from an unrestrained position to a restrained position to engage the flexure arm and prevent the head from moving in a direction essentially perpendicular to the disk.

2006017, Aug 3, 2006

Sep 21, 2005

11/231531

J. Wagner - San Jose CA, US
Tu Nguyen - San Jose CA, US
Ron Crain - San Jose CA, US
William Witt - Palo Alto CA, US
Greg Lyon - San Jose CA, US

G11B 23/03

360133000

A flexible data storage card and shutter lock is disclosed. The flexible data storage card includes a housing, a media disc, a shutter, and a shutter lock. The housing includes a card top coupled to a base to define an enclosed region, and an access window defined by the base and communicating with the enclosed region. The media disc is rotatably disposed within the enclosed region. The shutter is slidably disposed within the enclosed region and defines a shutter window selectively alignable with the access window. The shutter lock is disposed within the enclosed region and is selectively couplable with the shutter.

6229668, May 8, 2001

Jul 17, 1998

9/118592

Duane Huynh - San Jose CA
Tu Nguyen - San Jose CA
Kevin Vu - Santa Clara CA

Samsung Electronics Co., Ltd.

G11B 3308, G11B 2303

360 9701

An acoustic plug for an acoustic plate that is attached to a cover of a hard disk drive. The hard disk drive includes a disk that is attached to a spin motor. The spin motor is attached to a base plate of the disk drive. An actuator arm assembly is also mounted to the base plate. The cover encloses the spin motor, disk and actuator arm assembly. The drive also has at least one fastener that extends through the cover. The fastener(s) can be attached to the spin motor and/or the actuator arm assembly. The acoustic plate has an opening that is located adjacent to the fastener. The acoustic plug is located within the acoustic plate opening.