Patents by Inventor Jeffery A. LeBlanc

Jeffery A. LeBlanc 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).

  • Thermal compensation spindle for ceramic ball bearings
    Patent number: 6525440
    Abstract: This invention deals with compensating for thermal changes such that the spindle motor bearing preload remains as constant as possible throughout the disc drive operational temperature range. This is achieved by selecting a combination of materials with a composite thermal expansion that offsets the differential expansion of the steel bearing supports and the ceramic balls. The change in materials and configuration can be either that of the shaft, the hub, the support members, or any combination thereof.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: February 25, 2003
    Assignee: Seagate Technology LLC
    Inventors: John W. Elsing, David J. Jennings, Martin F. Byl, Jeffery A. LeBlanc, Robert M. Pelstring