Patent US5203558A successfully refreshed from Google Patents.
US5203558A
Expired / Lapsed
US
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Unidirectional flexible spinner
Assignee: SCHLOSS LENNY
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Filing: 1990-08-27
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Granted: 1993-04-20
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Expires: 2010-08-27
Abstract
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.
Inventors
- 👤 Benjamin J. An
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:25
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/0073; A63B69/0091
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
170 words
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.
Claim 2
Dependent Claim
170 words
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.
Claim 3
Dependent Claim
29 words
The device of claim 1 wherein a flexible housing surrounds said flexible section and urges said springs toward each other at a point intermediate the ends of the springs.
Claim 4
Dependent Claim
28 words
The device of claim 1 wherein said attachment means is configured to position said ball such that said axis is parallel to said plane defined by said springs.
Claim 5
Dependent Claim
14 words
The device of claim 1 wherein the ball is freely rotatable about said axis.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |