Patents by Inventor Mutsuo Ohta

Mutsuo Ohta 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).

  • Disk drive actuator for dissipating heat therefrom
    Patent number: 7079358
    Abstract: A disk drive has an actuator supported for turning, and supporting magnetic heads for reading and writing data from and to a recording disk and a voice coil for driving the actuator. Plates are disposed near the voice coil so as to cover part of the voice coil. A hard disk drive capable of detachably combining with a PC card is formed by assembling separate component parts including a functional unit including a disk, a base plate holding the functional unit, a frame bumper disposed in a middle part of the assembly and serving as a shock-absorbing member, a card assembly provided with a connector to be connected to the slot of a PC card, and a top cover covering the functional unit held on the base plate. The frame bumper receives lateral shocks that act on the side surfaces of the hard disk drive.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: July 18, 2006
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Yoshihiro Hirasaka, Mutsuo Ohta
  • Disk drive and actuator
    Publication number: 20040114278
    Abstract: A disk drive has an actuator supported for turning, and supporting magnetic heads for reading and writing data from and to a recording disk and a voice coil for driving the actuator. Plates are disposed near the voice coil so as to cover part of the voice coil. A hard disk drive capable of detachably combined with a PC card is formed by assembling separate component parts including a functional unit including a disk, a base plate holding the functional unit, a frame bumper disposed in a middle part of the assembly and serving as a shock-absorbing member, a card assembly provided with a connector to be connected to the slot of a PC card, and a top cover covering the functional unit held on the base plate. The frame bumper receives lateral shocks that act on the side surfaces of the hard disk drive.
    Type: Application
    Filed: October 24, 2003
    Publication date: June 17, 2004
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Yoshihiro Hirasaka, Mutsuo Ohta