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US 5,203,558 AGranted
Unidirectional flexible spinner
OwnerBenjamin J. Aninventor
Life of this patent
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Abstract
An unidirectional Flexible Spinner used in teaching and training the action of hitting in games such as tennis or baseball is provided. The Unidirectional Flexible Spinner consists of a spherical object which spins upon hitting, and a flexible section with a nonspherical cross sectional structure which flexes back and forth in approximately the same plane.
Claims4
A ball-hitting practice device which is adapted to redirect motion of a hit ball to a rhythmic motion in a uniplanar predetermined direction, comprising:
- supporting means for supporting said practice device on a practice surface;
- an elongated flexible section joined at one end to said supporting means and projecting therefrom, said flexible section being formed by two elongated cylindrical springs, said springs having first and second ends, said springs further being aligned in side-by-side relationship and defining a plane, means attaching said springs to each other at said first and second ends thereof, said first ends of said springs being joined to said supporting means;
- a ball defining an axis which extends along a diameter thereof;
- and
- attachment means attaching said ball at said axis to said second ends of said springs, opposite of said supporting means, and means attaching said first end of said springs to said support means, so that said ball tends to move in a direction generally transverse to said plane when hit by a batter.
2 more elements
Dependencies are inferred from the claim text.