Patents by Inventor Russell W. Fleet

Russell W. Fleet 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).

  • Programmable magnetic repulsion punching apparatus
    Patent number: 4821614
    Abstract: A punch apparatus for punching holes in thin sheet material including a frame, a punch element mounted on the frame for rectilinear movement, which further includes a planar element of conductive material mounted on the punch element, a coil on the frame mounted adjacent to the planar element, a carriage for supporting and positioning the sheet in the path of the punch element, leads connected to a source of electric current to energize the coil, a mechanical arrangement to rebound the punch element, and a programmable apparatus to selectively move the carriage and energize the coil to thereby produce a punched hole pattern in the sheet.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: April 18, 1989
    Assignee: International Business Machines Corporation
    Inventors: Russell W. Fleet, David C. Long, Karl F. Stroms, Gerhard Weiss