DE10060457A1 - Tennis racket with continuously adjusting weights through toothed pivot and associated plastics belts guided in frame to change mass distribution - Google Patents

Abstract

The tennis racket has a knurled head with toothed pivot (1.1) which engages through keyed connection in two plastics toothed belts (1.2) in the frame which are adjusted by turning the head. The two plastics belts are adjusted so that the rotary movement of the toothed pivot is converted into translation movement and the weights (1.3) in the racket frame are adjusted. The weights change the mass distribution in the racket head. The belts are guided at the sides by guide pins (1.4) in the frame and the lateral play is restricted by side guide members (1.5) in the frame so that the belts engage in the pivots.

Description

State of the art

The change in playing characteristics of tennis rackets through the integration of continuously adjustable weights in the frame, so that a smaller or To achieve greater top-heavyness has not been realized so far.

The different manufacturers use differently coordinated Racket frame, classified by player type, with defined focus and Frame rigidity and thus unchangeable playing characteristics.

task

It is the task of the present application, a tennis racket, which Preamble of the applicable claim specified type such to further develop that with a simple and reliable Adjustment mechanism, which is integrated in the racket head, the top heaviness and thus changing game characteristics without fixing stationary Additional weights on the tennis racket head.

It is particularly important that the adjustment mechanism, which is located on the side in the Tennis racket frames integrated weights continuously and in sync with Longitudinal axis of the racket in the direction of the head start or head end.

benefits

The advantages of the development are that the mass distribution, the Mass attack point and thus the swing behavior continuously changed can be.

At a slow blow speed and a higher setting Mass attack point (top-heavy) can therefore the same ball acceleration  can be achieved as with a fast stroke speed and a lower setting Mass attack point (finger-heavy).

It is also achieved that the optimal hit point (sweet spot) is enlarged and the Ball control is improved when the laterally integrated weights go towards Crosshead axis can be adjusted. The advantages of the present invention are listed below under point "a) -e)".

• a) Higher ball acceleration with top-heavy adjustment
• b) enlargement of the optimal hit point (sweet spot) and Improved control when adjusting the weights in the transverse axis of the head
• c) Adapting the game properties to each player type with a tennis racket
• d) In contrast to stationary weights on the frame is a continuous change of weight distribution possible without effort
• e) Maintenance-free and simple adjustment mechanism

The functional description of the individual elements and Numbering according to drawing "adjustment mechanism for tennis rackets".

• 1. The knurled head with attached toothed pin engages in the two guided plastic toothed belts (1.2) via a positive connection. By turning the knurled head, the plastic toothed belts (1.2) are adjusted tangentially synchronously, which, depending on the rotary movement, leads to a shortening or lengthening of the toothed belt length.
  A shortening means that the weights (1.3) connected with plastic toothed belts (1.2) move in the direction of the racket head transverse axis and reduce the top heaviness, while an extension of the plastic toothed belts (1.2) increases the top heaviness.
• 2. The two plastic timing belts are toothed on one side and engage in the Toothed pin, on the knurled head (1.1). The tooth geometry of the Plastic toothed belt is adapted to that of the toothed pin (1.1).
• 3. Weights are attached to the end of each plastic timing belt (1.2), by shifting the mass distribution in the tennis racket head will be changed. The weights are adapted to the cross-section of the frame profile and designed so that misjudgment is prevented.
• 4. Guide pins, integrated in the frame profile, prevent the Shift the plastic timing belt (1.2) laterally during the adjustment process To prevent misalignments.
• 5. Side guide cheeks, integrated in the frame, reduce the game and cause the plastic timing belts (1.2) when adjusting in the Engage the tooth profile of the tooth journal (1.1) without slipping.

The combination of the individual elements is numbered according to the drawing "Adjustment mechanism for tennis rackets" and listed as follows:

• 1. Knurled head with toothed pin
• 2. plastic timing belt
• 3. weights
• 4. guide pins
• 5. guide cheeks

At the end of these timing belts, weights are attached that are synchronous move to each other in the frame, initiated by the adjustment of the Plastic timing belt. In this way, the mass distribution, the Mass attack point and thus also the swing behavior of the Tennis racket changed continuously.

field of use

Due to the continuous adjustment possibility, this tennis racket is universally applicable because the different types of players without effort can adapt the racket to the special, own requirements, without attaching additional weights to the frame head.

Claims (1)

Tennis racket with continuously adjustable weights in the frame for changing the top heaviness by shifting the center of gravity in the longitudinal axis of the racket, characterized by :

• a) with a knurled head with attached toothed pin (1.1), which engages in a positive connection in two plastic toothed belts (1.2) in the frame and adjusts them by turning the knurled head;
• b) with two plastic toothed belts (1.2) in the frame, via which the rotary movement of the toothed pin (1.1) is converted into a translatory movement and thus adjusts the weights (1.3) in the racket frame;
• c) with two weights (1.3), which are adjusted via the connection with the plastic toothed belt (1.2) and thus change the mass distribution in the club head;
• d) with guide pins (1.4) in the frame for lateral guidance of the plastic timing belts (1.2);
• e) with lateral guide cheeks (1.5) in the frame, which limit the lateral play, so that the plastic toothed belts (1.2) engage in the toothed pin connected to the knurled head (1.1).