Abstract: Vibration damping systems for use in conjunction with rotating hollow bodies are provided. The vibration damping systems include a tubular outer shaft having a proximal and a distal end and defining a lumen therethrough, a tubular inner shaft having a proximal and a distal end wherein the inner shaft is configured and dimensioned to be received within the lumen of the outer shaft and a plurality of toroidal vibration damping elements disposed between the proximal and the distal ends of the outer and inner shafts. At least one vibration damping element is affixed between the proximal and the distal end of the outer and inner shaft and each end most vibration nodal point of a series of nodal points located along a length of the outer and inner shafts. At least one vibration damping element is affixed between adjacent vibration nodal points of the series of nodal points along the length of the outer and the inner shafts.

Abstract: Vibration damping systems for use in conjunction with rotating hollow bodies are provided. The vibration damping systems include a tubular outer shaft, a tubular inner shaft, a plurality of toroidal vibration damping elements disposed between said proximal and said distal end of said outer and said inner shafts, wherein at least one vibration damping element is affixed between said proximal and said distal end of said outer and inner shaft and each end most vibration nodal points of a series of nodal points located along a length of said outer and inner shafts, and wherein at least one vibration damping element is affixed between adjacent vibration nodal points of said series of nodal points along said length of said outer and said inner shafts, and at least one stiffening member disposed between each outer-most vibration damping element and a corresponding adjacent vibration damping element.

Abstract: Vibration damping systems for use in conjunction with rotating hollow bodies are provided. The vibration damping systems include a tubular outer shaft having a proximal and a distal end and defining a lumen therethrough, a tubular inner shaft having a proximal and a distal end wherein the inner shaft is configured and dimensioned to be received within the lumen of the outer shaft and a plurality of toroidal vibration damping elements disposed between the proximal and the distal ends of the outer and inner shafts. At least one vibration damping element is affixed between the proximal and the distal end of the outer and inner shaft and each end most vibration nodal point of a series of nodal points located along a length of the outer and inner shafts. At least one vibration damping element is affixed between adjacent vibration nodal points of the series of nodal points along the length of the outer and the inner shafts.

Abstract: Flexible vibration damping units, and vibratile products including flexible vibration damping units as components thereof, are provided wherein, in the vibration damping unit, at least one laminar group of flexible strip portions of a flexible framework is included having flexible longitudinally free-ended strip portions in the group firmly secured in the framework to one of the flexible strip portions in the group so as to have the strip portions in the group flex, and relatively move longitudinally with reference to one another, when the framework is flexed, this with the vibration damping unit further being characterized by including visco-elastic means, preferably of a visco-elastic adhesive kind, between the interfacially opposed flexible strip portions in the laminar group and engaging the flexible strip portions in that group so as to damp the longitudinal relative movements of the flexible strip portions in the group when the framework is flexed.

Abstract: A ski construction in which the ski runner slidingly supports an elongated plate, except at its adjustable front end which is fixed in normal use of the ski, the plate carrying toe and heel binding members, the plate being specially mounted to freely follow the runner in its rapid bending movements in use of the ski, and also adapted to alievate the stress and shock imposed on the ankle area of the skier when the front of the ski strikes an obstruction and the ski abruptly stops, as by striking a root obstruction, a body of hard ice hidden by snow, or packed snow, and this aliveation without changing the action of the binding members or their mutual set-spacing on the plate.