DE1059326B - Shuttlecock with basket made of plastic - Google Patents

Description

The invention relates to an improved shuttlecock construction, and more particularly to an improved one Feather balil basket made of plastic.

Shuttlecock baskets or wreaths made of plastic instead of natural feathers have already become known. Such cups usually widen outward in the shape of a truncated cone, like the wreaths of springs of real shuttlecocks, and they may contain a number of main ribs in a manner similar to that The keels of the feathers are arranged and perform the same function, namely, the wing part of the cup to support and strengthen. In another design, the cup can be of uniform strength have, for example consist of perforated sheet material.

The plastic must be elastic in order to avoid cracks or breaks in use, but as a result of the high density, which the plastic has in comparison with springs, the basket must expediently as Fine lattice construction are executed when the flight of a real shuttlecock is precisely reproduced shall be.

The invention is directed to the manufacture of a shuttlecock basket which is pleasing and improved Represents construction and is robust in its construction and yet light in weight. The head or the cap of the shuttlecock, to which the plastic basket is attached, can also be made of plastic, but also made of cork.

According to the invention, a shuttlecock basket made of elastic plastic contains two groups of ribs, which are arranged helically or helically with opposite pitch, such that the Ribs of one group are placed over the ribs of the other group and the outer ends of each rib with it are each connected to a rib of opposite slope. When the air wind over the helical Ribs on the outside of the basket, so it gives the shuttlecock the desired twist during its flight.

According to a further feature of the invention, the spaces between the cup are opposite coiled main ribs, especially in the wider part of the conical mantle, with thinner rods filled, which increase the strength of the cup considerably without appreciably increasing its weight zoom in, and the feather ballet flying through the air is a very pretty one Sight. As a continuation of the latticework, similar thin rods can also be used freely standing outer edge of the cup protrude and form a kind of fringe there.

Auxiliary ribs can also be provided between the main ribs, which also increase

Shuttlecock with a plastic cup

Applicant:

Charles John William Lashley,
Sandwich, Kent (UK)

Representative: Dr. W. Müller-Bore, patent attorney,
Braunschweig, Am Bürgerpark 8

Charles John William Lashley,
Sandwich, Kent (Great Britain),
has been named as the inventor

ao of strength and can contribute to the reinforcement of the twist during flight. The swirl effect can also are enlarged by the fact that the main ribs lying on the outside of the cup are right or have triangular cross-section and are arranged so that at least one side surface in one Angle to the lateral surface is. As a result, the ribs offer the Flugwimd a larger surface to attack, whereby the twist is increased.

The invention is described below and illustrated by an exemplary embodiment in the drawing.

Fig. 1 shows a shuttlecock according to the invention with a basket in a lattice construction, which is divided by two Groups of oppositely coiled ribs are formed;

Fig. 2 is a partial view from which it can be seen how the interstices of the grille with tracery Chopsticks can be filled in;

FIG. 3 is a partial view, expanded in the plane, of a construction variant of the grating according to FIG Fig. 1.

In the embodiment of Figure 1, the shuttlecock generally includes a frustoconical cup 1, which is connected to the head 2 by a ring 3 at the thin end of the truncated cone is trained. The cup 1 contains two groups of ribs 4, 5, which are helical with opposite directions Incline sense are arranged. The ribs 4 are above the ribs 5, so on the outside of the Basket, and in this position they act as guide surfaces that give the ball its rotation during flight. All ribs start from the ring 3, and there is one rib each from the first and second groups paired with each other and arise from a common

909 530/56

Claims (5)

seed root. The pitch angles of the helical ribs of both groups are opposite, but preferably the same size, and the ribs end at their point of movement at the free outer edge of the cup. The turning effect caused by the outer group of ribs can be improved if you give the ribs a rectangular or triangular cross-section, so that they come from the outer surface of the Protrude from the cup. " The spaces in the latticework of the wider half of the basket are filled with thinner rib elements or rods 6; to improve the flight characteristics of the shuttlecock.
- Obviously, the lattice construction formed by superimposing the two groups of ribs 4, 5 is light, but nevertheless strong and easy to manufacture by simple injection molding. Different Anordnungswei sen of the rod elements 6 are illustrated in Fig. 2; As you can see, the rods can either go over the entire interstitial space or only partially protrude into it. Similar chopsticks can also be made around the outer end of the cup, so that a kind of fringe is created. Depending on the distance between the ribs 4, 5 , the filling with the rods 6 can extend over the entire cup or only over part of it. In the embodiment according to FIG. 3, which shows a part of a basket spread out in the plane, an auxiliary rib 7 extends from each rib 4, 5 . This can arise from the main rib at any point along its length or grow out of the ring 3 itself, preferably at a point in the middle between the roots of the adjacent two main ribs. The curved shape of the main rib can also be seen in the drawing. The main ribs can, however, also be straight when the basket grid extends in the plane, and the number of ribs can be changed depending on the angle at which they extend from the ring 3. One group of ribs can also be given a different angle of inclination than the other. In the embodiment according to FIG. 1, a part of the basket grille is filled with chopsticks; man but can also omit these chopsticks if other flight characteristics are required, e.g. "if a faster shuttlecock is sought. The shuttlecock basket according to the invention can expediently be produced by an injection molding process will. As a material, for example, polyethylene or polyvinyl chloride come into consideration. In such a method, the cup can be formed integrally with the shuttlecock's head and you can retrofit the head with leather or a layer of rubbery fabric overlay to create a surface suitable for rocket striking. Patent claims: L shuttlecock with a frustoconical cup made of elastic plastic in a lattice structure, characterized in that the cup (1) consists of two groups of ribs with a helical pitch, such that the ribs (4) of one group correspond to the ribs (5) of the other group have opposite inclination, the ribs (4) of one group placed over the ribs (5) of the other group and the outer ends of each rib are each connected to a rib of opposite incline. 2. Shuttlecock according to claim 1, characterized in that some or all of the lattice spaces of the basket (1) are filled with rods (6) thinner than the ribs, the surfaces filled with rods forming the wider part of the conical surface of the basket. 3. Shuttlecock according to claim 1 or 2, characterized in that a fringe of thin rods is formed around the cup (1) on its free-standing outer edge. 4. Shuttlecock according to one of claims 1 to 3, characterized in that auxiliary ribs (7) are provided between the main ribs (4, 5). 5. Shuttlecock according to "one of the preceding claims, characterized in that the outer main ribs (4) have right-Mer triangular cross-section and are arranged so that at least one side surface is at an angle to the outer surface of the basket. Considered publications:
German Patent No. 61 076;
Swedish Patent No. 142 340. 1 sheet of drawings © 909 530/56 6.59