JPS5841577A - Tennis racket having special tensioned gut and gut applying method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This jilli relates to how to hold the strings in a tennis racket, and to a tennis racket with strings stretched in the manner of a seven.

The most important thing to do when practicing tennis is to hit the ball back to the sweet spot near the center of the racket surface. The position of this sweet spot varies depending on the shape of the racket, but it is generally located 1~aSS below the gut area of the racket (near the grip of the racket).

(World Tennis Magazine, July 1980 issue, pages 30-31.

Published by World Tennis, Inc.).

When the ball hits a certain spot, the impact on the racket and grip rd becomes very small, making it easy to hit a powerful mail, and since the ball is almost in the center of the racket, sufficient rotation is applied to the mail as well, allowing the player to hit the racket and the grip. You will be able to hit a variety of pitches such as slices, chips, and spin serves.

Therefore, it is important for players to practice hitting the ball back at the lowest level, which is similar to that for beginners. In order to practice how to hit the ball more quickly and accurately, a racket with a very small surface has been developed (Japanese Patent Publication No. 55-318149, Figure 1). However, this racket has a smaller surface than a normal racket, and the para/
It is necessary to provide a balancer l to compensate for the current, and since a portion of this balancer protrudes, that portion is likely to be damaged, which is uneconomical.

Also, it feels more strange than a normal racket, so if you are able to hit the center a little with this racket, it will take some time to get used to the normal two-handed racket again, which is an inconvenience. In order to do this, this kind of racket must be as nice as a normal racket in the first place.With this dose line, according to the technique of Iseki @ No. 48-8357 Gold 4C Sai 2), an effect close to that can be obtained. However, since Gatsuto replacement member 2 is separately supported, there is no need to worry about it.
ejb4゜Furthermore, in this kind of alternative fji #2, the first movement when hitting the ball is characteristic, and it is far from being good as a Teeslacut in the first place.

& 6 shots @ solves this inconvenient situation, so I made 5 to get the same effect only by using a normal racket and devising the angle of the gut.

Figure 8 shows an example of this.According to this publication, the racket 1iK114# has 5 to 10 swings in front and back, left and right, centered on the sweet spot of the racket, In this method, the intersection is placed within approximately 6 txh from the sweet spot. By stretching the guts in this way, the area where the vertical and product value guts intersect becomes a rectangle with a vertical and horizontal width of about 12 meters, and mail will bounce only when it hits this area twice, so it should be centered on the sweet spot. A small firm surface can be obtained, which is very effective for practicing hitting the ball with the center of the racket.

The advantage of such a racket is not only that you can practice hitting the ball in the sweet spot of the racket, but also that when you do a chair shot, you can be sure of where the ball landed on the racket. , if the ball hits the gut's cross 1 is AK, it will hit back with a sweet spot c-mail, and there will be little recoil on the racket and grip (and it will be a good shot that makes a lot of noise).

However, when the ball hits Gatsuto's thousand lines gBK, Gatsuto's anti-mildew force is very low, so the ball hardly flies forward, or even if it does fly, it is a weak ball and immediately falls to the ground. Shima 5゜If the ball goes further to gLIIIc, it will pass through the racket and become 1s.)V
- If the ball is at the edge of the gut, the ball will either go to a strange place or fall immediately downwards.In this way, depending on the force of the mail or its direction, the ball may be thrown by the person with the racket, B, or C. If you practice with this racket, it will be relatively easy to know which part of the 1 or 48% C you hit.

What's more, if a beginner were to hit a ball with this racket, he would be able to immediately tell which part of the racket the ball was hit by observing from nearby.

In general, each player has a habit of deciding which part of the racket to hit, and this hinders the progress of one stroke and causes many players to miss the ball, but this habit can be easily guessed with this racket. This technique has an effect that the prior art does not have, in that the practice 1 of catching the ball with the tosspot can be effectively performed.

When applying guts like this, since the total amount of guts is small, it is usually done in order to have sufficient repulsion.
It is better to tighten the ball harder than the ton, but for players who like to play the ball loosely in order to drive the ball, it is perfectly fine to leave it as is.

In addition, when the number of guts is small like this, the crossing guts tend to shift from each other, so it is very effective to insert a slip stopper 4 in the intersection #.

The figure I shows an additional gutt 5 for 14-strong players, and this reinforcing gutt 5 is even more effective if it passes through the racket's sufu (-toss bot).

Figure 6 shows another embodiment in which the guts are crossed diagonally to each other, and the shape of the connecting part of the guts is deformed, so the resulting ball-hitting surface is a 2-gut surface. It is approximated by the shape of .

Concerning the tension of guts, anti-slip, and reinforcing guts.

, t-7, and FIG. 8 show still other embodiments. In a normal mesh of guts, the distance between adjacent guts is approximately 1aI#, but in order to make the repulsive force stronger, this The mesh is made denser by shortening the interval (0.3 to Q.7 cps).

The same thing can be said about the tension of the guts, anti-slip, and reinforcing guts.

[Brief explanation of the drawing]

An illustration of a spear? Figure 2 is a front view of a conventional racket, Figure 3 is a front view of an embodiment of the present invention, Figure 4 is an enlarged oblique view of a portion of Figure 3, Figure 5, Figure 6, Figure 7. Figures 8 and 8 are front views of other embodiments, respectively. - 3...Gut 4...Slip stopper 5...Reinforcement gut

Claims (1)

[Scope of Claims] 1. In a normal-sized tennis racket, the difference between the ends of the guts is about 6 points from the sweet spot on the racket surface.
A tennis racket with a string tensioned only within m. 2%#fFIill A tennis racket described in the desired range l, which has a tight cross section of 1 ml and a non-slip device. 3. The tennis racket according to claim 81, which has reinforcing guts passing through the gut intersections. 4t! A tennis racket described in the range l of IP#vrII, which has guts in which the spacing between adjacent guts is closer than the normal gut spacing (approximately 0.3 to 0.7 (to)). . 5 How to tighten a regular-sized tennis racket i
In i&, a method of tensioning the racket so that the intersection of the two strings is within about 6 points from the racket's sweet spot. - A method of inserting the anti-slip A into the gutt intersection in the method described in patent claim IIIK. 749, the method of claim 115, further tensioning reinforcing strings passing through string intersections.