Patents by Inventor Craig J. Lawrence

Craig J. Lawrence 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).

  • Apparatus and method for replacing a bull gear on a trunnion
    Patent number: 5117546
    Abstract: An apparatus for installing a new bull gear onto a trunnion shaft of a BOF, the apparatus comprising a first stop removably attached to the end face of a turnnion shaft, a gear press shaft extending through an aperture within the first stop means, the gear press shaft having a first end portion with an enlarged segment inserted into a recess provided within the trunnion shaft, a second stop adjustably attached to a second end portion of the gear press shaft, a gear press plate removably attached to the gear and encircling the gear press shaft between the first and second stops and a jack means located between the gear press plate and the second stop.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: June 2, 1992
    Assignee: Bethlehem Steel Corporation
    Inventors: Craig J. Lawrence, James L. Marino
  • Fluid conduit coupling for a metallurgical converter trunnion
    Patent number: 4679774
    Abstract: A coupling for fluid conduits contained in a hollow trunnion of a basic oxygen furnace. The coupling is used to connect a plurality of fluid supply conduits to a plurality of fluid distribution conduits in the basic oxygen furnace.
    Type: Grant
    Filed: November 13, 1985
    Date of Patent: July 14, 1987
    Assignee: Bethlehem Steel Corp.
    Inventors: Craig J. Lawrence, John J. Ferriola