CZ139795A3 - Racket - Google Patents

Abstract

The rocket, especially the tennis racket, consists of an oval frame (1) which is provided with a handle (11) and is filled with a partition (2) which is made of string string (3a, 3b, 3c, 3d). The partition (2) consists of two separate impact surfaces (2a, 2b, 2c, 2d), whose string strings (3a, 3b, 3c, 3d) they have different elasticity, for example consist of strings (a, b) different diameters (d1, d2).

Description

The invention relates to a racket, in particular a tennis racket, which consists of an oval frame which is provided with a handle and is filled with a partition made of a string string.

BACKGROUND OF THE INVENTION

Tennis, badminton or the like rackets are known which have a partition formed in the oval part of the frame, which consists of only a single impact surface made of a string string. In doing so, the tennis, badminton, leaves and creates a variety of situations in which it is desirable to bounce or shoot the ball with varying hardness of the stroke in order to achieve an optimum effect when it reaches the opponent's territory. Since the racket has only a single impact area with a given flexibility, it is virtually impossible to change the hardness of the blows to the ball. Under these conditions, the player is mainly dependent on the choice of different development of muscle strength in the stroke. Thus, it is apparent that given the physical properties of the string of a single impact surface greatly limits the variability of the hardness of the reflected and fired balls.

SUMMARY OF THE INVENTION

These deficiencies are largely eliminated by a racket, in particular a tennis racket, consisting of an oval frame provided with a handle and filled with a baffle consisting of a string string, which consists in that the baffle consists of two separate impact surfaces whose string the strings have different elasticity. String strings of impact surfaces are made of strings of different diameters. String strings are made of materials with different values of elastic modulus. String strings on impact surfaces have different knitting densities. The strings of the impact surfaces have different stresses. The strings of the string strings are led into the fastening holes over the peripheral edges of the oval frame. Guiding grooves are formed on the circumferential edges of the oval frame. Continuous recesses are formed on the inside of the oval frame.

By using the racket according to the invention, a greater variability of the hardness of the reflected and fired balls can be achieved. The racket, with strings guided into the fastening holes over the peripheral edges of the oval frame, provides tennis, badminton, etc., enriching the game with new game elements and expanding tactical and technical game possibilities.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further illustrated by drawings, on which Fig. 1 is an entire front view racquet according to Example 1, Fig. 2 is a section along the line A -A of Fig. 1 in a first enlarged scale and Fig. 3 is a perspective view of the detail "C by ^M 1 in a second enlarged scale. FIG. Giant. Fig. 4 shows an overall front view of the rocket in the embodiment of Example 2; Fig. 5 is a section along line B - B of Fig. 4 in a first enlarged scale; and Fig. 6 is an axonometric view of detail D of Fig.

DETAILED DESCRIPTION OF THE INVENTION

Example 1

The tennis racket consists of an oval frame 1 (FIG. 1) which is provided with a handle 11 and is filled with a partition 2 (FIG. 2) which consists of two separate impact surfaces 2a, 2b. The impact surface 2a is made of a first string string 3a (FIG. 3), which consists of strings and a diameter d1. The impact surface 2b is made of a second string string 3b, which consists of strings b with a diameter d2. The strings and strings 38 ^ 3011 are made of a material having a lower modulus of elasticity than the material from which strings b of the string string 3b are made. The string string 3a has a knitting density greater than the string density of the string string 3b. The stringed strings 3a, 3b thus reach different stresses, which is expressed by different kilogram load. The strings a, b of the string strings 3a, 3b are guided in a known manner directly to the fixing holes 4a, 4b, which are formed at different heights h1, h2 of the oval frame 1.

The string strings 3a, 3b have different elasticity and thus the impact surfaces 2a, 2b have different ball bounce ability. The tennis player rotates handle 11 of the racket by about 180 °

3 according to the direction of the incoming ball or the intended firing of the ball, thereby choosing to use one of the impact surfaces 2a or 2b for the following game. The harder impact area 2a is selected by the player, for example, for serving, rC-turn and the like, and the softer impact area 2b is selected, for example, for stitching, shortening, stowing or lobbying.

Example 2

As in Example 1, the tennis racket consists of an oval frame 1 (FIG. 4) which is provided with a handle 11 and is filled with a partition 2 (FIG. 5) which consists of two separate impact surfaces 2c, 2d. The impact surface 2c is formed from the first string string 3c (FIG. 6), which consists of strings 6. The impact surface 2d is formed of a second string string 3d, which consists of strings d. The strings c of the string string 3c are guided over one peripheral edge 12c of the oval frame 1 into the fastening holes 4c. The strings d of the string string 3d are led through the second, opposite peripheral edge 12d of the oval frame 1 into the fastening holes 4d. Guiding grooves 13c, 13d are formed on the circumferential edges 12c, 12d of the oval frame 1 for the strings c, d. On the inside of the oval frame 1, continuous recesses 14c, 14d are formed.

Due to the guidance of the strings 8, d over the peripheral edges 12c,

12d to the mounting holes 4c, 4d, have impact surfaces 2c,

2d enlarged effective area. Moreover, the reflective functionality of these impact surfaces 2c, 2d at the peripheral locations of the oval frame 1 is improved by continuous recesses 14c, 14d. In tennis game you can use the whole surface of the racket, including the oval frame 1. This way you can bounce or shoot the ball with different direction of the next one.

For official, championship matches, certain designs of tennis, badminton, etc. rackets are currently prescribed. Nevertheless, the rackets according to the invention can be advantageously used in mass recreational games.

The invention can be used in the manufacture of tennis, badminton, etc. rackets.

č.y 05οΊρ1

PH39? - 95

Claims (8)

PATENT CLAIMS A racket, in particular a tennis racket, consisting of an oval frame provided with a handle and filled with a baffle formed from a string string, characterized in that the baffle (2) consists of two separate impact surfaces (2a, 2b; 2c, 2d), whose string strings (3a, 3b; 3c, 3d) have different elasticity. Rocket according to claim 1, characterized in that the string strings (3a, 3b) of the impact surfaces (2a, 2b) consist of strings (a, b) of different diameters (dl, d2). Rocket according to claim 2, characterized in that the strings (a, b) of the string strings (3a, 3b) are made of materials of different elastic modulus values. A racket according to claim 1, characterized in that the string strings (3a, 3b) of the impact surfaces (2a, 2b) have different knitting densities. A rocket according to claim 1, characterized in that the string strings (3a, 3b; 3c, 3d) of the impact surfaces (2a, 2b; 2c, 2d) have different stresses. Rocket according to claim 1, characterized in that the string strings (3c, 3d) have their strings (c, d) guided into the fixing holes (4c, 4d) over the peripheral edges (12c, 12d) of the oval frame (1). A racket according to claim 6, characterized in that guide grooves (13c, 13d) are provided for the strings (c, d) at the peripheral edges (12c, 12d) of the oval frame (1). Rocket according to claim 6, characterized in that continuous recesses (140, 140) are formed on the inside of the oval frame (1).