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US4367871A Expired / Lapsed US ⏱️ 0.0 years remaining

Articulable training device for racquet sports and the like

Assignee: Individual
•
Filing: 1980-07-25
•
Granted: 1983-01-11
•
Expires: 2000-07-25
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Abstract

Abstract An articulable training device, particularly adapted for continuously reinforcing proper stroking or serving techniques necessary to successfully play various racquet sports such as tennis, is disclosed herein and comprises a tennis racquet having an elongated handle member and a member which includes a ball rebounding surface or net face at one end thereof. The device for connecting said handle and said member having a ball rebounding surface for free relative pivotal movement about an axis transverse to the longitudinal dimension of said handle and generally parallel with said ball rebounding surface. Further included are means for limiting the range of relative pivotal movement of said members to thereby minimize the likelihood of accidental injury to the player using the racquet. Finally, means for rigidly connecting in substantially longitudinal alignment said handle and said member, whereby to prevent relative pivotal movement, are disclosed which enables adaptation of the device for playing various sports in a conventional manner.

Inventors

  • 👤 William E. Schiefer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 18:54
CPC Classifications
A; A63; A63B; A63B60/00; A63B60/54; A63B49/00; A63B49/02; A63B49/035; A63B60/0081; A63B60/06; A63B60/08; A63B60/10; A63B69/00; A63B69/38; A63B69/385; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/553

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 179 words
A tennis racquet comprising an elongate handle member, a second member having a ball rebounding surface, means connecting said handle and second members for free relative pivotal movement about an axis substantially transverse to the longitudinal dimension of said handle and generally parallel with said ball rebounding surface, said means comprising a flexible key member having shoulder means formed upon opposite ends thereof, each of said handle and second members having a recess extending inwardly from an end face thereof and communicating between opposite side portions of said handle and second members, said recesses being of a shape substantially complemental to said key member so that said key member may be manually, slideably inserted into said recesses for engagement therein, and means for securing said flexible key member within said recesses, said securement means comprising first and second sleeve members slideably surmounted, respectively, upon said handle and second members, said sleeve members each including means for detachably locking said sleeve members upon said handle and second members in first closed positions whereby to secure said flexible key member therebetween.
Claim 2
Dependent Claim 179 words
A tennis racquet comprising an elongate handle member, a second member having a ball rebounding surface, means connecting said handle and second members for free relative pivotal movement about an axis substantially transverse to the longitudinal dimension of said handle and generally parallel with said ball rebounding surface, said means comprising a flexible key member having shoulder means formed upon opposite ends thereof, each of said handle and second members having a recess extending inwardly from an end face thereof and communicating between opposite side portions of said handle and second members, said recesses being of a shape substantially complemental to said key member so that said key member may be manually, slideably inserted into said recesses for engagement therein, and means for securing said flexible key member within said recesses, said securement means comprising first and second sleeve members slideably surmounted, respectively, upon said handle and second members, said sleeve members each including means for detachably locking said sleeve members upon said handle and second members in first closed positions whereby to secure said flexible key member therebetween.
Claim 3
Dependent Claim 32 words
A tennis racquet as set forth in claim 1 further comprising cooperable abutment means on said handle and second members engageable to limit free relative pivotal movement thereof to a predetermined range.
Claim 4
Dependent Claim 33 words
A device as set forth in claim 2 wherein said predetermined range extends about ±60° in both directions from the position in which said handle and second members are in substantially longitudinal alignment.

References Cited (Backward Citations)

US497915A Cited
US648256A Cited
US1428015A Cited
US1529305A Cited
US3033575A Cited
US3170690A Cited
US3679205A Cited
US3912405A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-01-10 1986-07-12 1987-01-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-01-10 1990-07-12 1991-01-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-01-10 1994-07-12 1995-01-11 $7700.00 Window Closed / Lapsed

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