Abstract: A metal spring with embedded constrained layer damping provides effective damping of a supported load. A continuous load bearing tube is provided with an inner diameter and an outer diameter with a plurality of constraining layer tube sections concentric with the load bearing tube and spaced along the load bearing tube. A damping layer of a viscoelastic material contacts facing surfaces of the continuous load bearing tube and the constraining layer tube sections so that shear strains are induced in the viscoelastic material from relative rotation of the load bearing tube and the constraining layer sections to provide damping of an applied load. In one embodiment, the constraining layer tube sections and damping are within the load bearing continuous tube and the continuous tube is sealed at each end to permit use of the spring in a vacuum environment.

Abstract: A two-piece shower stall formed as an integral unit and thereafter separated and reassembled after placing a gasket intermediate an upper and lower section formed by the separation. A securing belt is preferably formed integral with the one-piece unit at the area of intended separation and serves to reinforce the shower stall during separation and provide a means for releasably securing the upper section and lower section together. The gasket intermediate the upper section and lower section preferably extends into the interior of the shower stall to provide a watertight seal.