Patents by Inventor Charles S. Spencer

Charles S. Spencer 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 reducing the accumulation of actuator bearing grease in hard disk drives
    Patent number: 6754024
    Abstract: A method for reducing the accumulation of actuator bearing grease in hard disk drives includes periodically forcing the disk drive into multiple unload/load cycles after extended read/write sessions wherein the disk drive has not unloaded. While the disk drive is unloading, the current required to unload the read/write head is monitored. Based on the value of the current, the frequency of the unload/load cycle is adjusted.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: June 22, 2004
    Assignee: International Business Machines Corporation
    Inventors: Mike Suk, Mike L. Ramirez, Charles S. Spencer, Jr.
  • System and method for reducing the accumulation of actuator bearing grease in hard disk drives
    Publication number: 20020196574
    Abstract: A method for reducing the accumulation of actuator bearing grease in hard disk drives includes periodically forcing the disk drive into multiple unload/load cycles after extended read/write sessions wherein the disk drive has not unloaded. While the disk drive is unloading, the current required to unload the read/write head is monitored. Based on the value of the current, the frequency of the unload/load cycle is adjusted.
    Type: Application
    Filed: June 22, 2001
    Publication date: December 26, 2002
    Applicant: International Business Machines Corporation
    Inventors: Mike Suk, Mike L. Ramirez, Charles S. Spencer