Patents by Inventor James W. McGregor

James W. McGregor 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).

  • Method of broaching a work-piece
    Patent number: 7681300
    Abstract: A device for centering a work piece with respect to a centerline of a tool includes a radially-stationary component rigidly secured with respect to the tool such that the radially-stationary component and the tool are concentric. A biasing mechanism is biased away from the radially-stationary component to apply substantially equally-distributed radial force at a periphery of the work piece to thereby center the work piece with respect to the tool. A method of broaching a work piece having an inner and an outer diameter includes machining the outer diameter and then applying circumferentially-distributed radial force to the inner diameter or the outer diameter to thereby center the work piece with respect to a broach tool. After the applying step, the method includes broaching the inner diameter of the work piece using the broach tool.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: March 23, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Travis M. Thompson, Jeffrey R. Lee, Stephen D. Doubler, Robert P. Guiliani, James W. McGregor
  • Work piece centering device and method of broaching
    Patent number: 7402011
    Abstract: A device for centering a work piece with respect to a centerline of a tool includes a radially-stationary component rigidly secured with respect to the tool such that the radially-stationary component and the tool are concentric. A biasing mechanism is biased away from the radially-stationary component to apply substantially equally-distributed radial force at a periphery of the work piece to thereby center the work piece with respect to the tool. A method of broaching a work piece having an inner and an outer diameter includes machining the outer diameter and then applying circumferentially-distributed radial force to the inner diameter or the outer diameter to thereby center the work piece with respect to a broach tool. After the applying step, the method includes broaching the inner diameter of the work piece using the broach tool.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: July 22, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Travis M. Thompson, Jeffrey R. Lee, Stephen D. Doubler, Robert P. Giuliani, James W. McGregor