Abstract: A system for rebuilding beaches which are subject to erosion of sand comprises a sheet of flexible impermeable material placed in the ocean near the shore and anchored to the water bottom with a plurality of landward tethers and a plurality of seaward tethers. A shoreward edge of the sheet parallel to the shoreline is weighted down. A seaward edge of the sheet, also parallel to the shoreline, may be provided with a float device to tend to raise the edge. As waves travel from the ocean toward the beach, the water is deflected under the sheet by the raised seaward edge, and into contact with sand and soil under the sheet, causing the sand and soil to move toward the beach. However, during the backwash of the wave, the weighted beachward edge of the sheet rests on the water bottom, deflecting the water over the sheet and out of contact with the sand and soil under the sheet, preventing movement of sand and soil away from the beach.

Abstract: A holder for keys or other orificed elements comprising a helical loop of a thin rigid but resilient element having overlapping end portions, said end portions being flattened to present faces abutting each other with at least one curved segment not in the plane of the loop nesting with the curved segment of the other end portion. When the sides of the loop adjacent the end portions are pressed inwardly towards each other, the curved segments are caused to unnest by camming action, thereby separating the tips of each end portion from contact with the other end portion so that a key or other orificed element may be threaded between the end portions and onto or off of the loop. Upon release of the pressure on the sides of the loop, the end portions return to their nesting position and any key or other orificed element may then be moved freely around the loop.

Abstract: A key holder consisting of an elongate, one-piece body of springlike material formed into a loop with overlapping lateral surface contacting end portions. In one version the end portions are sinuously formed so as to cam apart upon finger pressure being applied to the loop sides. Another version has end portion tip bent to embrace loop sides, in another the end portions sinuous in the loop plane, and in a still further version the overlapping end portions are each formed by doubling the body material back onto itself.