Abstract: A robot server assembly for serving table tennis balls comprising a body defining an internal ball path, means for introducing balls into the internal ball path at the lower end of the body; a ball guide at the upper end of the back panel, a serving head assembly at the upper end of the body having a ball discharge tube in communication with the ball guide; a pair of opposed discharge wheel operatively associated with the discharge tube; a plurality of gears associated with the serving head; at least one servo motor associated with at least one of the gears to actuate rotation of the gear; whereby actuation of a least one of said gears affects 180° rotation of the serving head about a longitudinal axis of the serving head, up and down movement of the serving head and side to side movement of the serving head.

Abstract: A robot server assembly for serving table tennis balls comprising a body defining an internal ball path, means for introducing balls into the internal ball path at the lower end of the body; a ball guide at the upper end of the back panel, a serving head assembly at the upper end of the body having a ball discharge tube in communication with the ball guide; a pair of opposed discharge wheel operatively associated with the discharge tube; a plurality of gears associated with the serving head; at least one servo motor associated with at least one of the gears to actuate rotation of the gear; whereby actuation of a least one of said gears affects 180° rotation of the serving head about a longitudinal axis of the serving head, up and down movement of the serving head and side to side movement of the serving head.

Abstract: A robot server assembly (20) having a back panel (21), a ball feed collector plate (23) extending outwardly from the bottom of back panel with its horizontal plane positioned an angle relative to the longitudinal axis of the back panel (21), a rotatable ball pickup mechanism (24) positioned between a the ball collector mounting section (22) of the back panel and the ball feed collector plate and having a plurality of ball pickup structures (78, 80, 81, 82) extending into the collector plate; a ball guide (25) at the upper end of the back panel; a substantially transparent front cover (28) attached to the front surface of the back panel (21) and extending from the bottom of the ball guide (25) to ball pickup mechanism (24) to define an enclosed ball passageway (30); an oscillator (32) is mounted to the top of the back panel above the ball guide, with a serving head assembly (34) attached to the oscillator through a pivot guide (35).

Abstract: A robot server assembly (20) having a back panel (21), a ball feed collector plate (23) extending outwardly from the bottom of back panel with its horizontal plane positioned an angle relative to the longitudinal axis of the back panel (21), a rotatable ball pickup mechanism (24) positioned between a the ball collector mounting section (22) of the back panel and the ball feed collector plate and having a plurality of ball pickup structures (78, 80, 81, 82) extending into the collector plate; a ball guide (25) at the upper end of the back panel; a substantially transparent front cover (28) attached to the front surface of the back panel (21) and extending from the bottom of the ball guide (25) to ball pickup mechanism (24) to define an enclosed ball passageway (30); an oscillator (32) is mounted to the top of the back panel above the ball guide, with a serving head assembly (34) attached to the oscillator through a pivot guide (35).

Abstract: An automatic table tennis ball serving device is disclosed as having a generally vertically extending enclosure with a table tennis ball feeding passageway including a lower ball entrance and an upper ball dispensing outlet. Ball feeding arms are mounted to the enclosure adjacent the lower ball entrance for feeding table tennis balls upwardly in the ball feeding passageway against the force of gravity. A ball dispensing head is mounted to the enclosure adjacent the upper ball dispensing outlet for serving table tennis balls to a player at selected rates and trajectories. The ball dispensing head includes a ball size adjustment mechanism to enable table tennis balls of at least two diameters to selectively pass through the ball dispensing head when one or another diameter of the at least two different ball diameters is selected by the player.