Patents by Inventor James A. Koppa

James A. Koppa 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).

  • Hydraulic piston and rod assembly
    Patent number: 4024802
    Abstract: A fluid cylinder, piston and rod assembly where the cylinder is equipped with mounting means and the piston and rod are slidably carried in the cylinder. The piston rod is attached to the piston by means of a segmented locking ring engaging a groove at the piston end of the rod. The locking ring is fastened to the piston by means of a plurality of fasteners.The piston is equipped with peripheral wear inserts and hydraulic fluid seal means.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: May 24, 1977
    Assignee: International Harvester Company
    Inventor: James A. Koppa