Patents by Inventor Tisha Jefferson

Tisha Jefferson 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).

  • System and method for hard disk drive with disk clamp annular rim inner wall engaging hub annular recess outer wall
    Patent number: 7126787
    Abstract: A disk clamp for securing data storage disks to the hub of a spindle motor in a hard disk drive has a circumferential rib protruding from a lower surface of the disk clamp. A complementary recess is formed in the hub of the spindle motor for closely receiving the rib on the disk clamp. The inner diameter of the rib and the outer diameter of the recess are closely toleranced to provide a very precise centering feature for mounting and aligning the disk clamp with respect to the hub and spindle motor. This design reduces the complexity of the tooling and fixtures required to complete the assembly and the overall part cost is reduced.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: October 24, 2006
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Andre Sirilutporn Chan, Ta-Chang Fu, Andrew Keith Hanlon, Steven Alf Hanssen, Tisha Jefferson, Kunihiro Shida, Jr-Yi Shen, Stanley Yen Wong
  • System and method for attaching a disk clamp to the hub of a spindle motor in a hard disk drive
    Publication number: 20060002013
    Abstract: A disk clamp for securing data storage disks to the hub of a spindle motor in a hard disk drive has a circumferential rib protruding from a lower surface of the disk clamp. A complementary recess is formed in the hub of the spindle motor for closely receiving the rib on the disk clamp. The inner diameter of the rib and the outer diameter of the recess are closely toleranced to provide a very precise centering feature for mounting and aligning the disk clamp with respect to the hub and spindle motor. This design reduces the complexity of the tooling and fixtures required to complete the assembly and the overall part cost is reduced.
    Type: Application
    Filed: June 22, 2005
    Publication date: January 5, 2006
    Inventors: Andre Chan, Ta-Chang Fu, Andrew Hanlon, Steven Hanssen, Tisha Jefferson, Kunihiro Shida, Jr-Yi Shen, Stanley Wong
  • Hard disk drive with disk clamp inner wall engaging bearing sleeve outer wall
    Patent number: 6961216
    Abstract: A disk clamp for securing data storage disks to the hub of a spindle motor in a hard disk drive has a circumferential rib protruding from a lower surface of the disk clamp. A complementary recess is formed in the hub of the spindle motor for closely receiving the rib on the disk clamp. The inner diameter of the rib and the outer diameter of the recess are closely toleranced to provide a very precise centering feature for mounting and aligning the disk clamp with respect to the hub and spindle motor. This design reduces the complexity of the tooling and fixtures required to complete the assembly and the overall part cost is reduced.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: November 1, 2005
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Andre Sirilutporn Chan, Ta-Chang Fu, Andrew Keith Hanlon, Steven Alf Hanssen, Tisha Jefferson, Kunihiro Shida, Jr-Yi Shen, Stanley Yen Wong
  • System, method, and apparatus for centering a disk clamp to the hub of a spindle motor in a hard disk drive
    Publication number: 20040264043
    Abstract: A disk clamp for securing data storage disks to the hub of a spindle motor in a hard disk drive has a circumferential rib protruding from a lower surface of the disk clamp. A complementary recess is formed in the hub of the spindle motor for closely receiving the rib on the disk clamp. The inner diameter of the rib and the outer diameter of the recess are closely toleranced to provide a very precise centering feature for mounting and aligning the disk clamp with respect to the hub and spindle motor. This design reduces the complexity of the tooling and fixtures required to complete the assembly and the overall part cost is reduced.
    Type: Application
    Filed: June 25, 2003
    Publication date: December 30, 2004
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Andre Sirilutporn Chan, Ta-Chang Fu, Andrew Keith Hanlon, Steven Alf Hanssen, Tisha Jefferson, Kunihiro Shida, Jr-Yi Shen, Stanley Yen Wong