Patents by Inventor Richard G. Keehn

Richard G. Keehn 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).

  • Machine tool with temperature compensation
    Patent number: 5421683
    Abstract: A machine has a cutter for performing a cutting operation on a series of workpieces. The cutter is moved toward the workpiece to perform the cutting operation, and a control regulates the amount of such movement to an infeed distance for effecting a predetermined depth of cut. The control is adjusted in response to temperature changes which result in machine growth/shrinkage in order to vary the infeed distance as required to maintain the depth of cut constant despite the machine growth/shrinkage.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: June 6, 1995
    Assignee: National Broach & Machine Company
    Inventor: Richard G. Keehn