Abstract: A ball rebound wall apparatus for a swimming pool which uses a substantially planar panel mounted on a pontoon assembly. The pontoon assembly is to be floatingly located within the swimming pool. A ballast is to be placed on the pool decking with a pontoon assembly to be tied to the ballast in order to locate the pontoon assembly in a set position and maintain the pontoon assembly in a set position. The pontoon assembly includes a groove. The ball rebound wall is to be mounted within the groove to be supported on the pontoon assembly. The pontoon assembly can be varied in its flotation ability by increasing or decreasing flotation. The rebound wall is to be tilted to assume an inclined position so that upon a ball striking the rebound wall, the ball is rebounded in an upward direction away from the surface of the water of the swimming pool. The ball rebound wall apparatus is to be readily removable and disassembled when not in use.

Abstract: A game goal apparatus that is intended to be played within a swimming pool which uses a substantially planar backboard at opposite ends of the swimming pool. Each backboard is designed to be used in conjunction with a water polo ball. Each backboard includes a through opening which may connect with a net mounted on the backboard to guide the ball when the ball passes through the through opening to be deposited on the water directly adjacent the rear surface of the backboard. The backboard is to be mounted on a frame which may be located within the water of the swimming pool. The backboard is tilted to assume an inclined position so that upon the ball striking the surface of the backboard it rebounds in an upward direction away from the surface of the water of the swimming pool. The goal apparatus may be collapsible when not in use.

Abstract: A game goal apparatus that is intended to be played within a swimming pool which uses a substantially planar backboard at opposite ends of the swimming pool. Each backboard is designed to be used in conjunction with a water polo ball. Each backboard includes a through opening which connects with a net mounted on the backboard to guide the ball when the ball passes through the through opening to be deposited on the water directly adjacent the rear surface of the backboard. The backboard is to be mounted on a frame which has a forward section which is located within the water of the swimming pool and a rearward section supportingly mounted on the swimming pool decking. The backboard is tilted to assume an inclined position so that upon the ball striking the surface of the backboard it rebounds in an upward direction away from the surface of the water of the swimming pool.

Abstract: The orthodontic appliance includes the usual band fitted around the tooth, a pair of T-shaped brackets with an aligned groove for placing the arch wire; a ligating element having a flat base and a button on top is placed on the brackets to hold the arch wire; the ligating element is fastened to the brackets by means of wires welded to the bottom of the ligating element; an elastic band can be fastened to the button as well as to the button on a ligating element analogously tied to another tooth.

Abstract: An orthodontic face bow for use in the correction of malposed teeth, especially for children. The face bow includes an externally applied outer bow and an internally applied inner bow which extends into the wearer's mouth and which separates from the outer bow when the latter is pulled.