Patents by Inventor Charles M. Andert

Charles M. Andert 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).

  • Automated machine tool
    Patent number: 4688973
    Abstract: An automated machine tool is provided having an adjusting apparatus for changing the cutting radius of a cutting tool by changing the tool's position on a horizontal axis perpendicular to the axis of rotation of the cutting tool. A constant cutter feed rate is maintained by adjusting the rotation rate of the cutting tool in proportion to the distance of the cutting tool from the centerline of rotation.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: August 25, 1987
    Assignee: McDonnell Douglas Corporation
    Inventors: Charles M. Andert, John E. Corley
  • Hydraulic stop
    Patent number: 4530625
    Abstract: An improved hydraulic stop for use with drilling and countersinking tools. The stop limits the penetration of the tool into the workpiece by dwelling at a pre-set depth while the machine spindle continues to travel (feed) through a hydraulic override system.A safety relief valve, pre-set to a safe load, will permit the device to collapse or override if the hydraulic or mechanical override system should fail.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: July 23, 1985
    Assignee: McDonnell Douglas Corporation
    Inventors: John E. Corley, Charles M. Andert, Joseph H. Geen, Wesley G. Wells, Russell D. Lark
  • Hydraulic stop
    Patent number: 4273481
    Abstract: An automatic hydraulic stop for use with a numerical control machine and cutting tool. The stop senses the distance to a work piece, limits the depth of penetration of the tool into a work piece and provides protection for inadvertent travel of spindle of the numerical control machine beyond a projected point.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: June 16, 1981
    Assignee: McDonnell Douglas Corporation
    Inventors: John E. Corley, Joseph M. Mitchell, Charles M. Andert