US3937465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tennis stroke training device
Assignee: ROLSON AND Co
•
Filing: 1974-09-13
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Granted: 1976-02-10
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Expires: 1994-09-13
Abstract
Abstract A training device for assisting a trainee in stroking a tennis racquet in such manner that the head of the tennis racquet does not shift in a vertical plane below the wrist of the trainee and, as such, always remains above the wrist of the trainee in such vertical plane. This training device comprises a harness which is secured to the body of the trainee and a cord which extends from the harness to the racquet. The opposite end of this cord is removably attached to the racquet at a point which is intermediate the head portion and the handle of the racquet. In this way, the trainee will always maintain his wrist below the head of the racquet and, in addition, the cord is adjustably sized so that it may be used to limit the forward and backward swing of the racquet in any stroking thereof by the trainee.
Inventors
- 👤 Bruce Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:02
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/38
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
172 words
A tennis training device for assisting a trainee in stroking a tennis racquet having a head capable of engaging a ball and a handle capable of being grasped by a trainee; said training device comprising: a harness for securement to the body of a trainee, said harness comprising only first and second body loops, said second loop sized and shaped to extend across the chest, over the shoulder of the arm opposite the racket holding arm and across the back of the body of a trainee; said first loop being sized and shaped to extend around the shoulder of said racket holding arm of a trainee and said second loop being attached at its ends to said first loop at opposite points thereon; a cord extending from said first loop towards said racket, an attachment means on one end of said cord to secure said cord to a tennis racket at a point intermediate the portion of a head engaging a ball and the portion of the handle grasped by a trainee.
Claim 2
Dependent Claim
172 words
A tennis training device for assisting a trainee in stroking a tennis racquet having a head capable of engaging a ball and a handle capable of being grasped by a trainee; said training device comprising: a harness for securement to the body of a trainee, said harness comprising only first and second body loops, said second loop sized and shaped to extend across the chest, over the shoulder of the arm opposite the racket holding arm and across the back of the body of a trainee; said first loop being sized and shaped to extend around the shoulder of said racket holding arm of a trainee and said second loop being attached at its ends to said first loop at opposite points thereon; a cord extending from said first loop towards said racket, an attachment means on one end of said cord to secure said cord to a tennis racket at a point intermediate the portion of a head engaging a ball and the portion of the handle grasped by a trainee.
Claim 3
Dependent Claim
40 words
The tennis training device of claim 1 further characterized in that said cord is substantially non-elastic and of a length to prevent the head of a tennis racquet when stroking same from being located below a wrist of the trainee.
Claim 4
Dependent Claim
18 words
The game training device of claim 1 further characterized in that said attachment means comprises a clamp member.
Claim 5
Dependent Claim
43 words
The tennis training device of claim 1 further characterized in that said first and second loops are each provided with their own individual adjustment means to adjust the sizes of the first and second loops to conform to the size of a trainee.
Claim 6
Dependent Claim
63 words
The tennis training device of claim 1 further characterized in that a portion of said cord is comprised of a first section which is somewhat resilient but yet substantially inelastic and inextensible, a second section which is slightly elastic and slightly extensible to permit movement of a tennis racquet, and adjustment means is associated with said cord to adjust the overall length thereof.
Claim 7
Dependent Claim
30 words
The tennis training device of claim 1 further characterized in that the attachment means is a manually operable clamp attachment means which removably secures the cord to a tennis racquet.
Claim 8
Dependent Claim
47 words
The tennis training device of claim 1 further characterized in that said cord has a length of such size to permit a trainee to swing at a ball without locating the head of a tennis racquet below the point of grasping of the handle by a trainee.
Claim 9
Dependent Claim
29 words
The training device of claim 1 further characterized in that said cord is adapted for attachment to a racquet at the point where the handle connects to the head.
Claim 10
Dependent Claim
22 words
The training device of claim 1 further characterized in that said cord is adapted for attachment to the head of a racquet.
Claim 11
Dependent Claim
195 words
A tennis training device for assisting a trainee in stroking a tennis racquet having a head capable of engaging a ball and a handle capable of being grasped by a trainee; said training device comprising: a harness adapted to be secured to the body of a trainee, said harness comprising only first and second body loops, said second loop extendable across the chest, over the shoulder of the arm opposite the racket holding arm and across the back of the body of a trainee; said first loop being extendable around the shoulder of said racket holding arm of a trainee and said second loop being attached at its ends to said first loop at opposite points thereon; a cord extending from said first loop towards said racket, and attachment means on one end of said cord to secure the cord to a tennis racket at a point intermediate the portion of a head engaging a ball and the portion of the handle grasped by the trainee, said cord being substantially non-elastic and of a length to prevent the head of a tennis racket when stroking same from being located below the wrist of a trainee.
Claim 12
Dependent Claim
195 words
A tennis training device for assisting a trainee in stroking a tennis racquet having a head capable of engaging a ball and a handle capable of being grasped by a trainee; said training device comprising: a harness adapted to be secured to the body of a trainee, said harness comprising only first and second body loops, said second loop extendable across the chest, over the shoulder of the arm opposite the racket holding arm and across the back of the body of a trainee; said first loop being extendable around the shoulder of said racket holding arm of a trainee and said second loop being attached at its ends to said first loop at opposite points thereon; a cord extending from said first loop towards said racket, and attachment means on one end of said cord to secure the cord to a tennis racket at a point intermediate the portion of a head engaging a ball and the portion of the handle grasped by the trainee, said cord being substantially non-elastic and of a length to prevent the head of a tennis racket when stroking same from being located below the wrist of a trainee.
Claim 13
Dependent Claim
18 words
The tennis training device of claim 10 further characterized in that said attachment means is a clamp member.
References Cited (Backward Citations)
GB190316681A
Cited
GB205442A
Cited
GB522814A
Cited
US3101196A
Cited
US3595583A
Cited
US3740052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |