Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1986-07-10
1987-10-13
Pinkham, Richard C.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
124 7, 124 41R, A63B 6940
Patent
active
046993789
ABSTRACT:
A tennis ball throwing machine which comprises a motor secured to a frame board, the output end of the motor shaft having a gear wheel securely mounted thereon, first and second transmission shaft respectively fixed to a gear wheel at one end thereof and engaged with the gear wheel of the motor, a bat pivotally attached to the first transmission shaft, one end of the bat being a hitting portion, and the other end thereof being attached to a tension spring, a cam pivoted on the second transmission shaft, a ball guiding groove being pivoted on a supporting shaft and having a portion thereof in contact with the cam to move upward, downward, leftward and rightward, a tension spring at the bottom end of the ball guide groove. The axis of the cam which is eccentric with and at an angle relative to the second transmission shaft, and two guiding boards are provided beneath the ball guiding groove, the two guiding boards being clamped on both sides of the cam whereby the ball guiding groove driven by the cam may move upward, downward, leftward and rightward to change the throwing direction.
REFERENCES:
patent: 3207147 (1965-09-01), Giovagnoil
patent: 3252453 (1966-05-01), Giovagnoil
patent: 3601111 (1971-08-01), Embry
patent: 4325351 (1982-04-01), Yuasa
patent: 4570607 (1986-02-01), Stokes
patent: 4615325 (1986-10-01), Yamamura
Brown T.
Chu David T.
Pinkham Richard C.
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