Computer controller ball throwing machine

Details Computer controller ball throwing machine Computer controller ball throwing machine

1990-10-25

1992-06-30

Coven, Edward M.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273 26D, 124 78, F41B 1100, A63B 6940

Patent

active

051256533

ABSTRACT:
A new ball throwing machine for ejecting tennis balls comprising an adjustable ball throwing mechanism, a microcomputer controlling the throwing mechanism for programmed stroke sequences, and a remote control unit attached to the microcomputer and having a touch pad keyboard for direct assignment of impact points of the balls and for command selection and, for balls impacting on a center line of a tennis court, the throwing mechanism is controlled for determining a vertical angle and a launching speed of throwing out the balls on basis of linear interpolation between co-ordinates of two check points of the impact of balls, of a training level and a stroke type preselected on the keyboard, and the first check point is a meshing point of a net and the center line of the tennis court, the second check point is a meshing point of a baseline and the center line; for all other balls, also a horizontal angle of throwing out the balls is determined by a simple trigonometric relation, and a memory is provided in the microcomputer for storing the angle and speed data of each impact point.

REFERENCES:
patent: 4442823 (1984-04-01), Floyd et al.
patent: 4467424 (1984-08-01), Hedges et al.
patent: 4501257 (1985-02-01), Kholin
patent: 4712534 (1987-12-01), Nozato
patent: 4774928 (1988-10-01), Kholin
patent: 4915384 (1990-04-01), Baer

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