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US4057250A Expired / Lapsed US ⏱️ 0.0 years remaining

Tennis racket construction

Assignee: Individual
•
Filing: 1975-09-05
•
Granted: 1977-11-08
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Expires: 1995-09-05
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Abstract

Abstract The present invention relates to the construction of sports rackets, such as those used for tennis and similar games. The racket has weight means which moves transverse to the plane of the racket stringing, mounted adjacent to the bow or head of the racket to provide inertial rebound deadening when the racket strikes a ball.

Inventors

  • 👤 William G. Kuban

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 23:10
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/03; A63B60/00; A63B60/02; A63B60/04; A63B60/54

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 123 words
A sports racket having a bow portion, a handle attached to said bow portion and means providing a ball striking surface held by said bow portion, said ball striking surface generally defining a plane, a support attached to said racket adjacent the bow portion, and weight means movably retained relative to said support so as to permit substantially unrestrained movement of said weight means in direction transverse to said plane under forces generated during manual swinging of said racket to permit the weight means to physically shift when the sports racket strikes a ball, said weight means being of sufficient mass so that when the weight means shifts it effects a counteracting force reducing rebound of the sports racket after striking a ball.
Claim 2
Dependent Claim 123 words
A sports racket having a bow portion, a handle attached to said bow portion and means providing a ball striking surface held by said bow portion, said ball striking surface generally defining a plane, a support attached to said racket adjacent the bow portion, and weight means movably retained relative to said support so as to permit substantially unrestrained movement of said weight means in direction transverse to said plane under forces generated during manual swinging of said racket to permit the weight means to physically shift when the sports racket strikes a ball, said weight means being of sufficient mass so that when the weight means shifts it effects a counteracting force reducing rebound of the sports racket after striking a ball.
Claim 3
Dependent Claim 25 words
The sports racket of claim 1 wherein said support comprises a container member and said weight means comprises shot captively retained in said container member.
Claim 4
Dependent Claim 22 words
The sports racket of claim 1 wherein said support is mounted adjacent the attachment area of said handle to said bow portion.
Claim 5
Dependent Claim 18 words
The sports racket of claim 3 wherein said support comprises a spring member resiliently mounting said weight means.
Claim 6
Dependent Claim 165 words
A sports racket having a bow portion defining a racket plane and having means for striking a sports missile and having a handle attached to said bow portion, said racket being capable of being manually swung in a striking direction to strike a sports missile, a hollow container mounted to the racket adjacent the bow portion and being attached to transmit forces on the container directly to the racket, a quantity of heavy discrete shot like particles partially filling said container and movable in said container without substantial restraint in opposite directions along an axis extending generally along the intended direction of swing of the racket generally perpendicular to the racket plane, said container having end walls generally normal to said axis against which the shot like particles impinge under forces along the axis, the force of said shot like particles hitting an end wall of said container when the racket strikes a sports missile during swinging thereof opposing the rebounding tendency of the racket.
Claim 7
Dependent Claim 165 words
A sports racket having a bow portion defining a racket plane and having means for striking a sports missile and having a handle attached to said bow portion, said racket being capable of being manually swung in a striking direction to strike a sports missile, a hollow container mounted to the racket adjacent the bow portion and being attached to transmit forces on the container directly to the racket, a quantity of heavy discrete shot like particles partially filling said container and movable in said container without substantial restraint in opposite directions along an axis extending generally along the intended direction of swing of the racket generally perpendicular to the racket plane, said container having end walls generally normal to said axis against which the shot like particles impinge under forces along the axis, the force of said shot like particles hitting an end wall of said container when the racket strikes a sports missile during swinging thereof opposing the rebounding tendency of the racket.
Claim 8
Dependent Claim 30 words
The combination as specified in claim 5 wherein said handle is joined to said bow portion at a throat area, and wherein said container is mounted adjacent said throat area.
Claim 9
Dependent Claim 35 words
The combination of claim 5 wherein said handle comprises a pair of spaced members attached to said bow portion and defining an open throat, and wherein said container is mounted in the open throat area.

References Cited (Backward Citations)

US1186283A Cited
US1526734A Cited
AU225938A Cited
FR974039A Cited
GB942909A Cited
US3130762A Cited
US3605832A Cited
US3582072A Cited
US3941380A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-11-07 1981-05-09 1981-11-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-11-07 1985-05-09 1985-11-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-11-07 1989-05-09 1989-11-08 $7700.00 Window Closed / Lapsed

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