Abstract: The invention relates to an automatic solar heating system for open-air swimming pools with a basin (2) for holding the bathing water, including a solar heating means with a walkable basin boundary (4, 22) incorporating a circulation path and having an inlet (6) for bathing water to be heated arranged beneath the level of the bathing water and an outlet (8) for heated bathing water, and a heat-insulated, evacuatable warm water tank (10) for the heated bathing water, the inlet (12) of the warm water tank (10) being arranged beneath the level of the outlet (8) of the basin boundary (4, 22) and connected with this outlet (8), and the outlet (14) of the warm water tank (10) being in communication via a pump-filter unit (16) with a basin inlet opening (18) for the heated and filtered bathing water.

Abstract: Safety ski binding comprising a sole plate which is releasably connected to the ski by a trunnion located approximately beneath the heel and further comprising a sole mount and heel assembly affixed to said sole plate, whereby a double-armed rocker is mounted in said heel assembly so as to pivot about a horizontal axis extending perpendicular to the ski, the one arm of said rocker projecting rearwardly and being designed as sliding cam and being in engagement with a curved member affixed to the ski and the second arm of said rocker being articulated with a tension carriage for a spring, whereby the pre-biased spring urging the rearward arm of the rocker onto said curved member.