Back to results
US 4,361,339 AGranted
Steering ski suspension for snowmobiles
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorTakashi Kobayashi
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorTakashi Kobayashi
Estimating the term…
A snowmobile includes a frame and a steering ski. A suspension interconnects them so the ski supports and steers the frame. A stationary cylinder is fixed to the frame, and a movable cylinder slides in it. A rod is fixed to the stationary cylinder and carries a head which acts as a restriction to dampen physical shocks. A rod compensation chamber is mounted to the ski and connected to the lower part of the movable cylinder by a flexible conduit. The ski is pivotally mounted to the movable cylinder. A floating piston is slidably fitted in either the rod compensating chamber or in the movable cylinder so that a gas charge can be injected on one side of it, said gas charge occupying all or part of said rod compensating chamber, the other side of said floating piston confronting oil in or from the lower portion of the movable cylinder.
A steering ski suspension system for snowmobiles, comprising:
In a steering ski suspension system for a snowmobile, including a frame and a ski to support and steer the frame, said suspension system including a stationary cylinder fixed to said frame, a movable cylinder axially slidably fitted in said fixed cylinder, a rod fixed to said stationary cylinder and carrying a head disposed in said movable cylinder to form a restricted orifice in said movable cylinder to divide it into two portions for containing oil and acting as a shock absorber by restricting axial transfer of oil across said head, the improvement comprising;
Dependencies are inferred from the claim text.