Patents by Inventor Ralph Kallenbach

Ralph Kallenbach 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: 4955467
    Abstract: An energy damping device that includes a piston-cylinder assembly having a cylinder and a piston movable therein. A pre-loaded double acting spring, and a friction assembly, are enclosed fully within the cylinder, and engage the piston concentrically. The spring acts against the friction assembly for forcing it into frictional engagement with the inner surface of the cylinder. The friction assembly includes at least one wedge for engaging the interior surface of the cylinder. The friction assembly further includes a plurality of spaced-apart compression rings, that are interleaved with the wedges, for forcing them into radially outwardly directed frictional engagement with the interior surface of the cylinder.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: September 11, 1990
    Assignee: Fluor Corporation
    Inventor: Ralph Kallenbach