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An exercise machine has a frame with parallel rails and a glide board slidably mounted upon the frame and having a plurality of wheels defining concave surfaces in rolling engagement upon the parallel rails. The wheels have a relatively hard roller and an outer tire of resilient material defining th

An exercise machine has a frame with parallel rails and a glide board slidably mounted upon the frame and having a plurality of wheels defining concave surfaces in rolling engagement upon the parallel rails. The wheels have a relatively hard roller and an outer tire of resilient material defining the concave surface.

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[ What is claimed is:] [1.] A folding exercise machine being movable between an unfolded operable position and a folded position, said machine comprising:an upright post mounted to a transverse base bar;a frame with an upper end, a lower end, and at least two parallel incline rails slidably mounted

[ What is claimed is:] [1.] A folding exercise machine being movable between an unfolded operable position and a folded position, said machine comprising:an upright post mounted to a transverse base bar;a frame with an upper end, a lower end, and at least two parallel incline rails slidably mounted to said upright post for adjusting the inclination of said parallel incline rails, each of said rails having an upper member and a lower member a glide board slidably mounted upon said rails; anda hinge assembly including a transverse hinge member which pivotally connects said lower members to said upper members, respectively, and a handle having a distal free end for grasping and a lower end rotatably mounted to said transverse hinge member wherein when said handle is pulled upwardly said upper and lower members fold together, respectively.