Patents by Inventor James Randal Jenkins

James Randal Jenkins 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).

  • Dynamic disc pack balance correction
    Patent number: 6418612
    Abstract: A method for automatically correcting the dynamic imbalance of a disc pack of a disc drive, the disc pack conveyed to a first selected position in a balance correction assembly station where a rotary positioner lifts and rotates the disc pack to a reference position for the attachment of weighted shims to the disc pack. A shim selector assembly delivers a selected shim, and an end effector transfers the selected shim to a shim attachment assembly. The shim attachment assembly rotates and spreads open the shim so that the disc pack can be receivingly engaged thereby, and the shim attachment assembly releases the selected shim to lockingly engage the disc pack. A flipping assembly reverses the disc pack for placement of another selected shim to the other end of the disc pack, as required.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: July 16, 2002
    Assignee: Seagate Technology LLC
    Inventors: Thomas Hong Chuang, Steve Gregory Horning, James Randal Jenkins
  • Balance correction station for a disc drive
    Patent number: 6094804
    Abstract: An apparatus and method for automatically correcting the dynamic imbalance of a disc pack of a disc drive, the disc pack conveyed to a first selected position in a balance correction assembly station where a rotary positioner lifts and rotates the disc pack to a reference position for the attachment of weighted shims to the disc pack. A shim selector assembly delivers a selected shim, and an end effector transfers the selected shim to a shim attachment assembly. The shim attachment assembly rotates and spreads open the shim so that the disc pack can be receivingly engaged thereby, and the shim attachment assembly releases the selected shim to lockingly engage the disc pack. A flipping assembly reverses the disc pack for placement of another selected shim to the other end of the disc pack, as required.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: August 1, 2000
    Assignee: Seagate Technology, Inc.
    Inventors: Thomas Hong Chuang, Steve Gregory Horning, James Randal Jenkins