Patents by Inventor Gerald A. Legge

Gerald A. Legge 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).

  • Patent number: 4718201
    Abstract: A portable tube cutter and a method of cutting a boiler tube in a power generating station with the portable tube cutter is disclosed comprising electromagnetically clamping a portable tube cutter to a circumferential portion of a tube to be cut in a power generating station, the tube cutter having a frame formed with a clamping element adapted to fixedly, electromagnetically mount to a circumferential portion of the tube and having a power driven cutting element operable to cut the tube and movable upon the frame along an axis which intersects the longitudinal axis of the tube at an angle; and thereafter moving the power driven cutting element along the axis of movement and into engagement with the tube for cutting the tube.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: January 12, 1988
    Inventor: Gerald A. Legge
  • Patent number: 4633555
    Abstract: A method and apparatus for cutting a boiler tube-wall of a power generating station comprised of a plurality of generally parallel, vertical tubes welded together lengthwise, the method employing a guide having a pair of parallel guide rods interposed between a pair of securement devices for selectively, removably securing the guide to the tube-wall and a mount slidably mounted on the guide rods for movably supporting an actuatable tool for movement along the guide rods between the securement devices, the method comprising the steps of:(a) mounting a cutting tool to the mount;(b) removably securing the guide to a first location on one vertical surface of the tube-wall, the location being defined by a first line of cut to be made in the tube-wall;(c) actuating the cutting tool; and(d) moving the cutting tool along the guide rods between the securement devices and along the first cut line to cut through the tube-wall and any of the tubes therealong.
    Type: Grant
    Filed: April 10, 1985
    Date of Patent: January 6, 1987
    Inventor: Gerald A. Legge