A - Human Necessities – 63 – B
Patent
A - Human Necessities
63
B
273/81
A63B 69/18 (2006.01)
Patent
CA 1276658
ABSTRACT OF THE DISCLOSURE A device for exercising is provided having a pair of rails that are held in a spaced apart parallel relationship by a brace element. A platform is provided for riding on the rails and a first resilient element provides a first restoring force on the platform which is directed toward the middle of the rails. A second resilient means provides a second restoring force on the platform which is directed toward the middle of the rails. An adjustment element is then used to adjust the magnitude of the second restoring force, the adjustment element contacting the second resilient element at at least three points with a first one of the three points located in a vertical plane cm one side of the middle of the rails, with a second one of the three points located in a vertical plane on the other side of the middle of the rails, and with a third one of the three points associated with the platform and moving therewith.
571614
Loane R. Joel
Sim & Mcburney
LandOfFree
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