Exercise devices – Involving user translation or physical simulation thereof – Alpine or towed skiing
Patent
1990-09-04
1992-09-15
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Alpine or towed skiing
482 80, 482146, A63B 6918
Patent
active
051472570
ABSTRACT:
A ski exercise device is provided having at least two parallel rails held in a fixed relationship by brace elements at the ends. A carriage is provided for riding along the rails, and a first resilient element provides a restoring force on the carriage directed toward the center of the rails. Platforms for a user's feet are pivotally attached to the carriage off-center from the centerline of the platforms so that the natural action by a user in shifting weight from one platform to the other platform in operation causes the respective platforms to pivot in the correct direction to simulate the action of parallel skiing. The first resilient element is fastened to the carriage at about a mid-point. One end of the first resilient element in the preferred embodiment passes around a roller attached to one of the end brace elements, extends back toward the middle of the rails, and is clamped at a clamp assembly attached to an additional brace element between the rails. The other end of the first resilient element similarly passes around a roller at the opposite end brace element, extends back toward the middle of the rails, and is clamped in a clamp assembly attached to the additional brace element between the rails. This unique arrangement provides additional length for the first resilient element over previous devices, and results in a lower percentage of stretch in operation over the unstretched length, extending the life of the element. The end rollers substantially eliminate wearing friction on the first resilient element.
REFERENCES:
patent: 3511499 (1970-05-01), Schawalder
patent: 3524641 (1970-08-01), Ossenkop
patent: 3547434 (1970-12-01), Ossenkop
patent: 3704885 (1972-12-01), Raciunas
patent: 4376532 (1983-03-01), Hunstad
patent: 4743014 (1988-05-01), Loane
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