Patents by Inventor Hugo A. Rita

Hugo A. Rita 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).

  • Gas nitrided taper faced keystone piston ring incorporating a sealing land and orientation groove
    Patent number: 5901963
    Abstract: A piston ring having a keystone shape and an orientation feature on one of its surfaces for ensuring proper orientation of the ring during installation. The piston ring preferably has an outer peripheral surface that includes a sealing land with a nitride hardened surface to resist wear during the service life of the piston ring. A tapered surface is also provided on the outer peripheral surface adjacent to the sealing land.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: May 11, 1999
    Assignee: Dana Corporation
    Inventors: Russell E. Hite, John C. Lahrman, Hugo A. Rita