Patents by Inventor Han Hu

Han Hu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7149060
    Abstract: A disk drive apparatus. The apparatus has a first drive device and a support member coupled to the first drive device. The support member has a tongue portion and a gimbal portion. The tongue portion is coupled the gimbal portion. A fixed drive device is formed within a first portion of the tongue portion. A movable drive device is operably coupled to the fixed drive device and formed within a second portion of the tongue portion. A read/write head is coupled to the movable drive device. A voltage source is coupled between the fixed drive device and the movable drive device to cause movement of the read/write head by forming an interaction between the fixed drive device and the movable drive device.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: December 12, 2006
    Assignee: Magnecomp Corporation
    Inventors: Xiao Yang, Visit Thaveeprungsriporn, Szu-Han Hu
  • Publication number: 20050117257
    Abstract: Techniques for preventing electrostatic discharge (ESD) and circuit noise are provided. More particularly, the present invention provides a method to prevent ESD damage during the assembly of computer disk commonly called a hard disk for memory applications. The coating mainly involves a ion-deposition process. Merely by way of example, the present invention is implemented by using filtered cathodic vacuum arc (FCVA) with a dissipative crystalline and/or amorphous carbon base thin film coating on a flexible circuit to drain the potential electrostatic charges during circuit assembly and interconnect processes, yet it would be recognized that the invention has a much broader range of applicability on any electronic apparatus that is susceptible to electrostatic damage and static noise.
    Type: Application
    Filed: June 8, 2004
    Publication date: June 2, 2005
    Applicant: KR Precision Public Company Limited
    Inventors: Visit Thaveeprungsriporn, Szu-Han Hu
  • Publication number: 20050005425
    Abstract: Apparatus and techniques for measuring dimple-gimbal separation force for a suspension assembly in a computer disk, commonly called a hard disk drive (HDD), for understanding the impact on suspension dynamic performance. More particularly, the present invention provides readily procedures and methods for measuring the contact force exert between a gimbal and dimple of a HDD suspension assembly. Merely by way of example, the present invention is implemented using such procedures and methods to directly probe the gimbal-dimple contact force, yet it would be recognized that the invention has a much broader range of applicability on any mechanical apparatus that is small in dimension and structure stiffness, such as, micro actuators and micro electrical and mechanical system (MEMS) devices.
    Type: Application
    Filed: May 17, 2004
    Publication date: January 13, 2005
    Applicant: KR Precision Public Company Limited
    Inventors: Visit Thaveeprungsriporn, Szu-Han Hu, Khampon Sitthipongpanich, Tossapon Chettaisong
  • Publication number: 20040125509
    Abstract: An integrated gimbal and PZT structure. The structure includes a substrate, which has a first surface and a second surface. The first surface is opposite to the second surface and sandwiches a thickness of material of the substrate. The structure also includes an isolation layer formed overlying the first surface of the substrate and a patterned layer of PZT material overlying the isolation layer overlying the substrate. A tongue portion is formed from a first portion of the substrate for a gimbal structure of a suspension assembly. A spring portion is formed from a second portion of the substrate. The spring portion is coupled between a lower portion of the suspension assembly and the tongue portion.
    Type: Application
    Filed: December 27, 2002
    Publication date: July 1, 2004
    Applicant: KR Precision Public Company Limited
    Inventors: Xiao Yang, Visit Thaveeprungsriporn, Szu-Han Hu
  • Publication number: 20040125508
    Abstract: A method for manufacturing a microactuator device. The method includes providing a first sheet of material. The first sheet of material includes a plurality of gimbal structure regions. Each of the gimbal structure regions is spatially disposed on the first sheet of material. Each of the gimbal structure regions is capable of removal during a subsequent process. The method also includes providing a second sheet of material. The second sheet of material includes a plurality of actuator devices thereon. Each of the actuator devices is spatially disposed on the second sheet of material. Each of the actuator devices has an attachment surface. The method includes positioning the first sheet of material to the second sheet of material such that at least one of the attachment surface of one of the actuator devices is aligned with at least one gimbal region. The attachment surface of the one of the actuator devices is coupled with the gimbal region to connect the attachment surface with the gimbal region.
    Type: Application
    Filed: December 27, 2002
    Publication date: July 1, 2004
    Applicant: KR Precision Public Company Limited
    Inventors: Xiao Yang, Visit Thaveeprungsriporn, Szu-Han Hu
  • Publication number: 20040125510
    Abstract: A method (and apparatus) for operating a disk drive apparatus. The method includes moving a movable member about a fixed position to move a read/write head coupled to a slider to a selected track on a disk. The selected track is at least one of a plurality of tracks. The method includes adjusting a position of the read/write head using an actuating device integrated on the gimbal. The actuating step moves the read/write head relative in a manner normal to the track on the magnetic disk to align the read/write head on the track using a finer and faster alignment of the read/write head than the moveable support member.
    Type: Application
    Filed: December 27, 2002
    Publication date: July 1, 2004
    Applicant: KR Precision Public Company Limited
    Inventors: Xiao Yang, Visit Thaveeprungsriporn, Szu-Han Hu
  • Publication number: 20040125511
    Abstract: A method (and apparatus) for operating a disk drive apparatus. The method includes moving a movable member about a fixed position to move a read/write head coupled to a slider to a selected track on a disk. The selected track is at least one of a plurality of tracks. The method includes adjusting a position of the read/write head using an actuating device coupled between the read/write head and the slider. The actuating step moves the read/write head relative in a manner normal to the track on the magnetic disk to align the read/write head on the track using a finer and faster alignment of the read/write head than the moveable support member.
    Type: Application
    Filed: December 26, 2002
    Publication date: July 1, 2004
    Applicant: KR Precision Public Company Limited
    Inventors: Xiao Yang, Visit Thaveeprungsriporn, Szu-Han Hu
  • Publication number: 20040066571
    Abstract: A disk drive apparatus. The apparatus has a first drive device and a support member coupled to the first drive device. The support member has a tongue portion and a gimbal portion. The tongue portion is coupled the gimbal portion. A fixed drive device is formed within a first portion of the tongue portion. A movable drive device is operably coupled to the fixed drive device and formed within a second portion of the tongue portion. A read/write head is coupled to the movable drive device. A voltage source is coupled between the fixed drive device and the movable drive device to cause movement of the read/write head by forming an interaction between the fixed drive device and the movable drive device.
    Type: Application
    Filed: May 15, 2003
    Publication date: April 8, 2004
    Applicant: KR Precision Public Company Limited
    Inventors: Xiao Yang, Visit Thaveeprungsriporn, Szu-Han Hu
  • Publication number: 20040061969
    Abstract: A disk drive apparatus. The apparatus has a platter operably coupled to a servo drive device. The servo drive device is adapted to rotate the platter about a fixed axis. The apparatus also has a support member operably coupled to the platter to move the support member about one or more active regions on a surface of the platter. The apparatus has a read/write head including an active portion and a support portion. The support portion is coupled to the support member. The active portion is operably coupled to the platter to read and/or write information to the surface of the platter. A piezo electric actuating material is coupled between the support portion of the read/write head and the support member. A first electrode is coupled to a first side of the piezo electric actuating material. A second electrode is coupled to a second side of the piezo electric actuating material.
    Type: Application
    Filed: May 15, 2003
    Publication date: April 1, 2004
    Applicant: KR Precision Public Company Limited
    Inventors: Xiao Yang, Visit Thaveeprungsriporn, Szu-Han Hu
  • Patent number: 6302626
    Abstract: A fixed support for voice coil motor comprises a coil, hollow plate, opening, structural reinforcement beam, and a plurality of pins. The pins extruding from the hollow plate allows the coil to wind around them. The opening, which locates on the center of the hollow plate, distributes stress concentration around the center. The structural reinforcement beam, which extrudes from an edge of the hollow plate, improves stiffness of the fixed support, thereby allowing the hollow plate to be made thinner.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: October 16, 2001
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Chung Du, Szu-Han Hu, Te-Hui Yang, Chun-Hsien Liu
  • Patent number: D451898
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: December 11, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Alfred Wei Han Hu
  • Patent number: D466101
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: November 26, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Alfred Wei Han Hu
  • Patent number: D478562
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: August 19, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Alfred Wei-Han Hu
  • Patent number: D488483
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: April 13, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Alfred Wei-Han Hu
  • Patent number: D426831
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: June 20, 2000
    Assignee: Hon Hai Precision Ind, Co., Ltd.
    Inventor: Alfred Wei-Han Hu