Patents by Inventor James E. Koon

James E. Koon 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: 5467689
    Abstract: A linear hydraulic cylinder (11) is provided of the type having a cylinder barrel (13;113) and a piston (21;121) reciprocally disposed in the barrel. There is a main piston seal member (55) which seals between the piston and an interior surface (37) of the cylinder barrel. Disposed adjacent the piston seal is a wear ring (61;161) defining a substantially cylindrical outer surface (67) bounded by a pair of substantially square corners (66). A loader member (69) biases the wear ring into sufficiently tight engagement with the interior surface of the barrel to prevent passage of contaminant particles between the surface and the wear ring. The result is substantially reduced cylinder "drift" in the presence of contaminant particles.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: November 21, 1995
    Assignee: Eaton Corporation
    Inventors: Jerry F. Carlin, James E. Koon, Paul D. Parker, Warren L. Thompson