Patents by Inventor James L. Karls

James L. Karls 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: 6837510
    Abstract: A hitch couples alternatively through either a ball or an implement pin. The implement pin is provided at a first elevation which is substantially below the ball coupling, which preserves optimum coupling heights for the different nature of towed vehicles. The pin coupling is shifted longitudinally relative to the ball sufficiently to prevent any vertical interference between the pin and the ball member above the pin. A sloped member between ball and pin coupling members provides interconnection therebetween. The sloped member is further coupled to a male receiver insert adapted to couple with a vehicle female receiver or other similar or alternative vehicular component capable of supporting the hitch.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: January 4, 2005
    Inventor: James L. Karls