Abstract: A gravity driven generator include a wheel hub surrounded by a circular wheel frame having a plurality of radial spokes extending from the hub to the frame and each carrying a movable weight that is impelled from a resting position proximate the hub to an extended position proximate the frame as the wheel rotates from the 12 o'clock position to the 6 o'clock position. This results in placing the overall structure out-of-balance and causes rotation. The movable weight are impelled inward from the 6 o'clock position to the 12 o'clock position. The rotating hub is connected to generators, such as geared generators, to produce electrical power. In a preferred embodiment, the movable weight are carried on tracks and impelled by electromechanical induction devices.

Abstract: A pro pitching device (10) comprising a backboard target (12) having a bull's-eye central aperture (14). An assembly (16) is for elevating the backboard target (12) in an adjustable vertical position above the ground (18). A person (20) can stand at a distance away from the backboard target (12) and throw a ball (22) towards the backboard target (12) and into the bull's-eye central aperture (14). A facility (24) is for stopping the ball (22) after entering the bull's-eye central aperture (14) and allowing the ball (22) to fall gently to the ground (18).