Patents by Inventor Don E. De Leo

Don E. De Leo 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).

  • Screw attachment from exterior of disk drive enclosure for motors with mount bracket screw bolt pattern diameter larger than the motor hub outside diameter
    Patent number: 7149052
    Abstract: A hard disk drive has a motor mounting bracket with mounting screws that attach from outside the drive and external to the seal with a screw bolt pattern diameter that is larger than an outer diameter of the motor hub. This configuration greatly reduces contamination inside the disk drive since all contaminants due to the screws are sealed from entering the disk drive. Consequently, the bottom of the mounting bracket is extended to the form factor limit to increase the internal space that is provided for the stator/winding of the motor. In relatively high platter count disk drives, the bottom disk is positioned very close to the motor bracket with this approach, which normally would cause the air drag to increase drastically and thereby impede the performance of the disk drive. Bosses may be used on the bracket to accommodate blind tap hole depths from the external surface of the bracket.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: December 12, 2006
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Don E. De Leo, Ta-Chang Fu, Ungtae Kim, Gregory Allen Lyons, Sattar Malek, Daniel Robert Stacer, Stanley Yen Wong
  • Screw attachment from exterior of disk drive enclosure for motors with mount bracket screw bolt pattern diameter larger than the motor hub outside diameter
    Patent number: 6989958
    Abstract: A hard disk drive has a motor mounting bracket with mounting screws that attach from outside the drive and external to the seal with a screw bolt pattern diameter that is larger than an outer diameter of the motor hub. This configuration greatly reduces contamination inside the disk drive since all contaminants due to the screws are sealed from entering the disk drive. Consequently, the bottom of the mounting bracket is extended to the form factor limit to increase the internal space that is provided for the stator/winding of the motor. In relatively high platter count disk drives, the bottom disk is positioned very close to the motor bracket with this approach, which normally would cause the air drag to increase drastically and thereby impede the performance of the disk drive. Bosses may be used on the bracket to accommodate blind tap hole depths from the external surface of the bracket.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: January 24, 2006
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Don E. De Leo, Ta-Chang Fu, Ungtae Kim, Gregory Allen Lyons, Sattar Malek, Daniel Robert Stacer, Stanley Yen Wong
  • Screw attachment from exterior of disk drive enclosure for motors with mount bracket screw bolt pattern diameter larger than the motor hub outside diameter
    Publication number: 20040252404
    Abstract: A hard disk drive has a motor mounting bracket with mounting screws that attach from outside the drive and external to the seal with a screw bolt pattern diameter that is larger than an outer diameter of the motor hub. This configuration greatly reduces contamination inside the disk drive since all contaminants due to the screws are sealed from entering the disk drive. Consequently, the bottom of the mounting bracket is extended to the form factor limit to increase the internal space that is provided for the stator/winding of the motor. In relatively high platter count disk drives, the bottom disk is positioned very close to the motor bracket with this approach, which normally would cause the air drag to increase drastically and thereby impede the performance of the disk drive. Bosses may be used on the bracket to accommodate blind tap hole depths from the external surface of the bracket.
    Type: Application
    Filed: June 16, 2003
    Publication date: December 16, 2004
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Don E. De Leo, Ta-Chang Fu, Ungtae Kim, Gregory Allen Lyons, Sattar Malek, Daniel Robert Stacer, Stanley Yen Wong