Patents by Inventor James J. Calloway

James J. Calloway 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: 5033177
    Abstract: Apparatus and methods for the removal and installation of sleeve bearings in a camshaft bore of an engine, such as a diesel engine. The device includes an operator rod, a bearing puller in accordance with U.S. Pat. No. 4,624,041, for engaging and pulling and/or pushing a sleeve bearing in the camshaft bore, apparatus for coupling the bearing puller along a rear end portion of the rod and at selected positions along the length of the rod for engaging sleeve bearings along the camshaft bore to both pull the bearings out of operating position and to reinstall bearings in operating positions, and apparatus for coupling the rod with a front face of the engine during the pulling and pushing of sleeve bearings for removal and installation of the bearings. In some embodiments of the apparatus the rod is operated by a wrench driven nut to pull and/or push the rod. In other embodiments the rod is operated by a hydraulic jack having an open hole piston fitting on the rod.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: July 23, 1991
    Assignee: Innovative Tools & Equipment Corporation
    Inventors: John B. Gathright, Grady C. Gathright, James J. Calloway, N. T. Rutledge