Turning device for a ball launcher

A ball launcher apparatus comprising:

• a ball launcher configured to launch balls, the ball launcher including portability-facilitating bottom wheels at a bottom surface of the ball launcher, and
• a turning device configured to be connected to and disconnected from the ball launcher via the portability-facilitating bottom wheels, wherein said turning device comprises:
• a) a base having a lower surface and side surfaces of the base;
• b) a platform connected to the base and configured to rotate about the base while the base is stationary such that the ball launcher rotates as the platform rotates, the platform having an upper surface and side surfaces of the platform to define an interior space of the turning device between the upper surface of the platform and the lower surface of the base and interior to the side surfaces of the platform and base,
• wherein the upper surface of the platform is formed with a plurality of fixed-volume recessed regions that extend towards the lower surface of the base and are sized to receive and to be secured to, the portability-facilitating bottom wheels of the ball launcher respectively while the ball launcher and the turning device are connected to each other to minimize or eliminate ball launcher slippage during a turning motion;
• c) a controlled force generator disposed between the upper surface of the platform and the lower surface of the base without extending outside of the interior space of the turning device, wherein a power source for powering the force generator is connectable thereto;
• and
• d) a turning mechanism connected to the controlled force generator and disposed between the upper surface of the platform and the lower surface of the base without extending outside of the interior space of the turning device, the turning mechanism configured to rotate the platform about the base while the base is stationary such that the platform and the ball launcher undergo angular displacement relative to said base, in response to a force transmitted to said turning mechanism by said force generator, to facilitate propulsion of the balls ejected from the ball launcher in varying directions,
• wherein said turning mechanism is movably connected to said platform and is configured to transmit a force that causes said platform to undergo non-uniform angular motion at a varied rate or at a varied angular displacement, or at a varied rate and at a varied angular displacement, so that the balls being ejected from the ball launcher will appear to be propelled in random directions,
• wherein the controlled force generator and turning mechanism are protected within the interior space of the turning device between the upper surface of the platform and the lower surface of the base and interior to the side surfaces of the platform and base.