| 摘要 |
A portable basketball retrieval and return device includes a movable support platform having casters for allowing the positioning of the device on a playing surface adjacent a basketball backboard and rim, a slidable upright frame mounted to the platform and to which a plurality of telescoping arms are attached whereby both the frame and arms are selectively extensible and retractable for disposing netting material which collects shot basketballs from the basketball backboard and rim. In order to eject basketballs in varying directions and velocities, and within various selected time intervals, to players dispersed about the playing surface, the device includes a catapult arm that receives basketballs and pivots between cocked and ejection positions for throwing the basketballs, a cam powered by a main thrower motor for rotating a loading wheel whose rotation lowers the catapult arm to the cocked position and a selectively pivotable positioner plate upon which the drive motor, the catapult arm, the cam, and the wheel are mounted. The device also includes an electronic control system whereby the practicing player can set the ejection points during pivotable motion of the positioner plate, the distance and velocity for the ejected basketballs, and the time interval between successive basketball ejections.
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