Abstract: An assembly for joining a generally cylindrical member to at least one other member wherein the assembly includes a pair of oppositely disposed C-shaped connectors that when connected together are in one of two selected conditions. When in the first condition the C-shaped connectors are slidable about the surface of the generally cylindrical member and when in the second condition the C-shaped connectors are secured to the generally cylindrical member at a preselected position on the surface thereof. The assembly includes a component receiver which receives the other member. The component receiver is slidably mounted on a selected one of the C-shaped connectors so as to be in one of two conditions. When in the first condition, the component receiver is slidable on the C-shaped connectors; and when in the second condition, the component receiver is secured to the adjacent C-shaped connector.

Abstract: A vaulting board is fastened at one end to a frame and slopes up under the action of two spaced apart, concave upwards, leaf springs carrying rollers on each end which contact the under side of the board. The spring centers are clamped in assemblies carrying transverse shafts at the bottom and the curved ends of J-bolts fit around the shafts and are connected to the frame, so that the springs pivot about the shafts axes under vaulting impact to equalize the stresses impressed in the board by the spring ends.

Abstract: A combination hip and leg sled exerciser having an adjustable toe rest when used as a leg exerciser, and an adjustable body board when used as a hip sled.