US4147348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tennis racket providing increased hitting power
Assignee: Individual
•
Filing: 1975-12-17
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Granted: 1979-04-03
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Expires: 1995-12-17
Abstract
Abstract An improved racket is provided for use in tennis and the like which is believed to enable a user to hit with more power while reducing the torsional forces on the arm. The racket of the invention includes a handle having a bent or offset portion which is of such a shape that the centerline of the racket head is substantially colinear with that of the forearm of the user and thus the racket head is effectively an extension of the arm. When viewed in plan, the throat or shaft of the racket is preferably offset downwardly about 32° relative to the grip or butt portion of the handle while the racket head is preferably offset upwardly about 5° relative to the throat. The racket also includes an improved grip which is fit to the hand of the user.
Inventors
- 👤 J. Kelly Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:29
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/08; A63B60/00; A63B60/06; A63B60/10; A63B60/34; A63B60/08; A63B60/12; Y; Y10; Y10S; Y10S16/00; Y10S16/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
A racket, for use in a game such as tennis or the like, comprising a racket head and a racket handle attached at one end to the racket head and including a throat portion at one end thereof adjacent the head and a gripping portion at the other end for gripping by a user, wherein the improvement comprises a racket handle including an angularly offset portion wherein the axis of the throat portion forms an angle of between about 28° and 36° with the axis of the gripping portion in the plane of the racket so that, in use, the centerline of the head of the racket is substantially colinear with the forearm of a user when gripping the gripping portion of the other end of said handle in a normal handshaking grip, the portion of said throat portion of said racket handle immediately adjacent the said racket head being substantially straight and being offset relative to the racket head in the plane thereof at an angle smaller than the angle between the axis of the throat portion and the axis of the gripping portion.
Claim 2
Dependent Claim
185 words
A racket, for use in a game such as tennis or the like, comprising a racket head and a racket handle attached at one end to the racket head and including a throat portion at one end thereof adjacent the head and a gripping portion at the other end for gripping by a user, wherein the improvement comprises a racket handle including an angularly offset portion wherein the axis of the throat portion forms an angle of between about 28° and 36° with the axis of the gripping portion in the plane of the racket so that, in use, the centerline of the head of the racket is substantially colinear with the forearm of a user when gripping the gripping portion of the other end of said handle in a normal handshaking grip, the portion of said throat portion of said racket handle immediately adjacent the said racket head being substantially straight and being offset relative to the racket head in the plane thereof at an angle smaller than the angle between the axis of the throat portion and the axis of the gripping portion.
Claim 3
Dependent Claim
22 words
A racket as claimed in claim 1 wherein said throat portion is angularly offset relative to said gripping portion by approximately 32°.
Claim 4
Dependent Claim
21 words
A racket as claimed in claim 1 wherein said throat portion is offset relative to the racket head by approximately 5°.
Claim 5
Dependent Claim
40 words
A racket as claimed in claim 1 wherein, when viewed in plan with the gripping portion downward, said throat portion is offset downwardly relative to said gripping portions, and the racket head is offset upwardly relative to said throat portion.
Claim 6
Dependent Claim
39 words
A racket as claimed in claim 4 wherein the amount of angular offset between said throat and gripping portions is approximately 32° and the amount of angular offset between the racket head and said throat portion is approximately 5°.
Claim 7
Dependent Claim
43 words
A racket as claimed in claim 1 wherein the gripping portion of the racket includes a grip which is contoured to fit the hand of the user and which includes a laterally extending flange portion at the free end of the gripping portion.
Claim 8
Dependent Claim
16 words
A racket as claimed in claim 6 wherein said grip is fabricated of a plastic foam.
Claim 9
Dependent Claim
26 words
A racket as claimed in claim 1 wherein said handle further includes a contoured, plastic foam grip including a butt portion at the free end thereof.
References Cited (Backward Citations)
US412479A
Cited
US595438A
Cited
GB229103A
Cited
US2205769A
Cited
US2421339A
Cited
CH334745A
Cited
US2914785A
Cited
US3203697A
Cited
US3272193A
Cited
US3326554A
Cited
US3554545A
Cited
US3545755A
Cited
US3702701A
Cited
GB1396424A
Cited
US3868110A
Cited
US3879048A
Cited
US4038719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |