Patents by Inventor William Dale Robertson

William Dale Robertson 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).

  • Storage disk having increased damping characteristics in a disk drive
    Patent number: 7573674
    Abstract: A disk drive includes a drive housing and a storage disk rotatably coupled to the drive housing. In one embodiment, the storage disk includes a first substrate, a spaced-apart second substrate, a damping layer and a rigid substrate spacer. The first substrate is formed from a first material having a first composition and the second substrate is formed from a second material having a second composition. The damping layer is positioned at least partially between the first substrate and the second substrate. The rigid substrate spacer is positioned at least partially between the first substrate and the second substrate, and is formed from a third material having a third composition that is different from the first composition and the second composition. In one embodiment, the first composition is different than the second composition. The first substrate has a first thickness and the second substrate has a second thickness that can be different than the second thickness.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: August 11, 2009
    Assignee: Maxtor Corporation
    Inventors: Larry E. Wittig, Michael Mallary, Paul A. Keenan, William Dale Robertson, Bernhard Hiller