Oscillating ball throwing machine
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United States of America Patent
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Nov 4, 2008
Grant Date -
Jun 29, 2006
app pub date -
Nov 22, 2005
filing date -
Dec 3, 2004
priority date (Note) -
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Abstract
A ball throwing machine for throwing projectiles, such as tennis balls or baseballs, includes a yoke assembly for projecting balls and a motor assembly for providing both nominal vertical throwing as well as oscillating vertical movement of the yoke assembly. The machine provides fine variations in the vertical trajectories of the balls being thrown and preferably eliminates the need for complicated electronic circuit controls and/or mechanical components.
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