Abstract: An eye-hand coordinator assembly (10) includes support members (12) having a longitudinal axis and a ball supporting arm (14) having a ball (16) disposed at a distal end (18) thereof. A cam member (20, 30) operatively supports the ball supporting arm (14) on the support member (12) and allows the arm (14) and the ball (16) to be displaceable from an initial rest position angularly about the longitudinal axis in response to an impact of the ball (16) while axially shifting along the longitudinal axis. The assembly (10) is characterized by the utilization of a spring (22) to dissipate the energy imparted to the arm (14) upon impact of the ball (16) after a predetermined amount of free movement of the arm (14) from the initial rest position. The spring (22) has a length shorter than the axial distance between the cam member (30) and a stop (24) when the assembly is in the initial rest position.

Abstract: An eye-hand coordinator assembly including a cam mechanism operatively connecting one end of a ball-supporting arm to a standard for allowing the arm and a ball to be displaceable from an initial position in response to an impact to the ball. The cam mechanism includes an upper cam and a lower cam with the upper cam being movable for rotation and axial shifting from a rest position relative to the lower cam. The cam mechanism is adjustably retained on the standard by an adjustment pin which extends through an opening in the lower cam and one of a plurality of vertically spaced adjustment holes in the standard. An elastic strap is disposed about the adjustment pin and a projecting stub shaft on the upper cam to interconnect the upper cam and the lower cam for resisting the rotary movement and axial shifting of the upper cam relative to the lower cam and for urging the upper cam to its rest position thereby returning the arm to its initial position after an impact to the ball.