Racket with damping element in neck area

Details Racket with damping element in neck area Racket with damping element in neck area

1999-07-29

2001-03-20

Chiu, Raleigh W. (Department: 3711)

Games using tangible projectile

Player held and powered, nonmechanical projector, per se,...

With sound-deadening, vibration-damping, or shock-absorbing...

C473S520000, C473S546000

Reexamination Certificate

active

06203455

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention relates to a ball-game racket, especially a tennis racket.
Ball-game rackets, in general, are known (DE-GM 94 13 688). In the case of the known ball-game racket, a damping element is accommodated in an additional bridge that is arranged between the two diverging bridges or frame sections that form the core piece, and are specifically vertical to the longitudinal axis of the racket-grip shaft and in the plane of the racket surface.
In the known case, the purpose of the damping element is to damp vibrations that arise in the racket, or in the vibration system, that includes the racket and the player's arm or hand, especially when during play the ball is not hit in the so-called “sweet spot”, i.e., in the area of the racket stringing where during play the racket behaves “neutrally” or largely neutrally with respect to vibration behavior and tendency toward vibration.
The object of this invention is to improve a ball-game racket of the type described above with regards to the accommodation and action of the damping element.
SUMMARY OF THE INVENTION
In the racket according to the invention, there is provided at least partially visible, a damping element on the racket or racket frame.
In one possible embodiment of the ball-game racket according to the invention, on the side facing toward the core piece of the grip shaft, a damping element is located in a recess that is accessible from the core piece.
The embodiment according to the invention has numerous advantages. The process of mounting the damping element is simplified. In addition, it is also possible to make the damping element replaceable in a particularly simple way.
In the case where the recess is located at the transition between the core piece and the grip shaft, the damping element is provided in a zone which during play is exposed to especially intense stress. Because the damping element is located in this zone, it is especially effective. Having the racket designed with the core piece between the grip shaft and clamping frame also ensures that the recess is readily accessible from the core piece.


REFERENCES:
patent: 4828260 (1989-05-01), Todd
patent: 4948131 (1990-08-01), Nakanishi
patent: 5071125 (1991-12-01), Shen
patent: 5219166 (1993-06-01), Chang
patent: 5236198 (1993-08-01), Haines et al.
patent: 5599018 (1997-02-01), Radel
patent: 2503941 (1976-08-01), None
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patent: 2225539 (1990-06-01), None
patent: 2247842 (1992-03-01), None
patent: 265206 (1929-03-01), None
patent: 40/1259875 (1989-10-01), None

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