US3904199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sports racket stroking trainer
Assignee: Individual
•
Filing: 1973-08-13
•
Granted: 1975-09-09
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Expires: 1993-08-13
Abstract
Abstract A sports stroke training device having a post for mounting vertically on a vertical surface. The post is provided with a longitudinal groove for adjustably retaining a pivot shaft. An elongated bar is mounted intermediate its ends on the pivot shaft for pivotal movement thereon. The bar is provided at each of its ends with a flexible guide member which extends perpendicular from the bar in a direction from the post. A correct racket stroke is made when both guide members are hit during the stroke along the longitudinal centerline of the bar.
Inventors
- 👤 Paul James Burchett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:05
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
A sports racket stroke training device adapted for attachment to a vertical support surface comprising: a post, said post having attachment means for attaching said post substantially vertical on said support surface, said post also having a longitudinally extending groove therein; a pivot shaft, said pivot shaft being received in said groove of said post, means for releasably holding said pivot shaft in said groove for selectively adjusting said pivot shaft at an infinite number of positions along said groove; An elongated bar, said bar having means intermediate its ends for connecting said bar to said pivot shaft, said bar therefore being angularly pivotal and slidably adjustable on said post by said pivot shaft; a pair of substantially elongated flexible guide members, said bar having a guide member attached substantially perpendicular to each of its ends, said guide members extending parallel to said pivot shaft and from a common side of said bar such that a racket must be swung past both guide members when stroked substantially along the longitudinal center line of said bar.
Claim 2
Dependent Claim
175 words
A sports racket stroke training device adapted for attachment to a vertical support surface comprising: a post, said post having attachment means for attaching said post substantially vertical on said support surface, said post also having a longitudinally extending groove therein; a pivot shaft, said pivot shaft being received in said groove of said post, means for releasably holding said pivot shaft in said groove for selectively adjusting said pivot shaft at an infinite number of positions along said groove; An elongated bar, said bar having means intermediate its ends for connecting said bar to said pivot shaft, said bar therefore being angularly pivotal and slidably adjustable on said post by said pivot shaft; a pair of substantially elongated flexible guide members, said bar having a guide member attached substantially perpendicular to each of its ends, said guide members extending parallel to said pivot shaft and from a common side of said bar such that a racket must be swung past both guide members when stroked substantially along the longitudinal center line of said bar.
Claim 3
Dependent Claim
40 words
The sports stroke training device as defined in claim 1, in which said bar contains indicia adjacent said pivotal shaft, said indicia providing visual reference for angular settings of 45*, 80* and 100* for said bar relative to said post.
Claim 4
Dependent Claim
34 words
The sports stroke training device as defined in claim 1, wherein said guide members are substantially straight such that both guide members are hit by a racket when a correct racket stroke is made.
Claim 5
Dependent Claim
98 words
The sports stroke training device as defined in claim 1 wherein said guide members are shaped as a circular hoop having a section removed therefrom to define an opening, said opening being slightly larger than a racket head, said guide members being attached to said bar at a point substantially diametrically opposite said removed section opening of said hoop such that when a correct racket stroke is made the head of a racket will pass through the opening of the hoop without touching and the handle will pass through said removed section opening of said hoop without touching.
Claim 6
Dependent Claim
46 words
The sports stroke training device as defined in claim 1, wherein a target member is attached intermediate the ends of said bar such that said target will be hit by a racket head when said racket is stroked along the longitudinal center line of said bar.
Claim 7
Dependent Claim
34 words
The sports stroke training device as defined in claim 5 wherein said target is a ball, said ball being held on said bar by an elongated shaft which is perpendicularly attached to said bar.
Claim 8
Dependent Claim
27 words
The sports stroke training device as defined in claim 6 wherein said ball holding shaft is flexible such that it will bend when said ball is hit.
References Cited (Backward Citations)
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Cited
US1427538A
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US2985452A
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US3341208A
Cited
US3489411A
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US3730531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |