Machine for delivering balls, especially tennis balls

Details Machine for delivering balls, especially tennis balls Machine for delivering balls, especially tennis balls

1993-07-06

1996-02-13

Green, Brian K.

Mechanical guns and projectors

Projectile impelled by coacting wheels

124 82, 124 34, 124 1, 273 26D, A63B 6940

Patent

active

054904935

ABSTRACT:
A machine for delivering balls, especially tennis balls, has a ball feeder (6) to feed individual balls (5) from a ball magazine (2) to a ball ejector (3) and a machine intrinsic feed controller (30) for sending internal control signals, controlling the ball feed and thus the ejection time, to the ball feeder (6). To enable external synchronization of the ball ejection time of several machines that the machine for delivering balls has a device (33, 35) to deactivate the machine's own feed controller (30) and a control input (34) connected electrically to the ball feeder (6) in order to attach an external control cable (39), by way of which, instead of the internal control signals external control signals, controlling the ball feed, and thus the ejection time, can be fed to the ball feeder (6).

REFERENCES:
patent: 4269163 (1981-05-01), Feith
patent: 4442823 (1984-04-01), Floyd et al.
patent: 4915384 (1990-04-01), Bear
patent: 5107820 (1992-04-01), Salansky
patent: 5125653 (1992-06-01), Kovacs et al.

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