Patents by Inventor J. Brent Thompson

J. Brent Thompson 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).

  • High speed spindle with preloaded bearings
    Patent number: 4519734
    Abstract: A high speed spindle preferably of the motorized type is described having means for axially preloading the spindle bearings and hydraulic preload locking means for locking the preload against diminution by expected axial pull-out forces exerted on the spindle shaft counter to the preload during machining. The hydraulic locking action is released in the event unexpectedly high, potentially damaging axial pull-out forces are encountered during machining.
    Type: Grant
    Filed: June 22, 1982
    Date of Patent: May 28, 1985
    Assignee: Ex-Cello-O Corporation
    Inventors: William A. Mitchell, J. Brent Thompson, John L. Freese