US Patent 6837510 Pinball hitch

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.