Patent ID: 7581735

Claim:
A skateboard/ski combination comprising: (a) a skateboard deck having upper and lower surfaces and opposite front and rear ends; (b) a front truck mounted on the lower surface of the deck disposed toward the front and a rear truck mounted on the lower surface of the deck disposed toward the rear, each said truck having a body supporting a transversely extending axle having opposite ends; (c) an anchor plate interposed between the lower surface of the deck and each of said trucks, each said anchor plate having opposite sides with connectors on opposite sides of the plate; (d) a ski pivotally coupled to the ends of each of said axles, said skis each having a length, inboard and outboard sides, a base and opposite ends, said skis being continuously curved along their length having a rocker with a first larger radius of curvature along its length intermediate the ends and transitioning at the opposite ends to curved shovels each having a second radius of curvature smaller than the first radius of curvature; (e) rails extending along the opposite sides of said skis, each rail projecting below the associated ski base, said rails being detachable from said skis; and (f) detachable extension springs extendable between the connectors on the anchor plates and the inboard sides of the associated ski whereby the rider can selectively attach springs between the anchor plates and the skis to apply tension to the skis to selectively adjust performance characteristics of the skateboard/ski combination without the use of tools.