US Patent 9731746 Ski for a snow vehicle

A ski for a snow vehicle has a ski body having an upper surface and a lower surface. The lower surface has a lift surface and a central runner. The central runner extends along a length of the ski body. The central runner depends from the ski body below the lift surfaces. There is a spindle with a first end and a second end. A ski attachment attaches the first end of the spindle to the ski body. The ski attachment has a pivot point that is positioned below a portion of the lift surface and in line with the central runner.