DE7814995U1 - Cue ball - Google Patents

Description

PATENT LAWYERS

MANITZ. FINSTERWALD & GRÄMKOW

P / Pr-D 2314 Munich, the \ g

DUNLOP AG
Dunlop Street 2
6450 Hanau / Main

Cue ball

The invention relates to a game ball with open pores on its surface, preferably made of a foamed one Plastic, e.g. B. polyurethane foam based on polyether or polyester.

Such balls are known and have a high play value. Because of the preferably used for the game ball Polyurethane foam results in a low weight and high elasticity, which allows an almost noiseless impact and may result in a lot of successive jumps while playing.

DH. C. MANITZ · D1PL.-ING. M. FINSTERWAID 3 I P L. - I N C. W. CRAMKOW ZEMTBaLKASSE BAYER. FOLK BANKS MUNICH aa. ROBERT-KOCH-STRASSE I 7 STUTTCART SO 'BAD CANNSTATTl MÖNCHEN. ACCOUNT NUMBER 7J7O TEL. ΌβΟι aa <a II. TELEX 0S-3967aPATMF SEELBERCSTR. r «3 / aS. TEL.107III56 72 61 POSTSCHECKrMONCHEN 77063-805

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Furthermore, these balls can have a clearly visible, for example bright, color. This is primarily used to be able to follow and catch a fast bouncing ball, even in poor visibility _{/ better.} In addition, this color makes it easier to find it outdoors. Overall, such game balls have excellent playing properties.

Play balls of this type are made from a block of porous polyurethane foam cut or milled out. As a result of this production, they have a large number of open surfaces on their surface Pores through which water and dirt can penetrate, especially when playing outdoors. This causes a higher weight and a smaller elasticity of the game ball, so that it no longer hits the ground as quietly and also no longer jumps so high. Furthermore, the strength in the wet state is greatly reduced, so that the balls are damaged much more quickly will. Eventually, the balls get dirty easily and appear unsightly. These well-known game balls therefore lost their initially very high play value after a relatively short time.

The invention is based on the object of designing game balls of the type mentioned in such a way that they can also be used for longer Use to maintain their playing characteristics.

This object is achieved in that the Surface is provided with a protective layer covering the pores, which preferably consists of a water and / or dirt repellent material consists. The game balls cut or milled from polyurethane foam are, for example by dipping or spraying, provided with a protective layer.

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This covers the outwardly open pores on the surface of the polyurethane foam ball. As a result, neither dirt can water can still penetrate the interior of the game ball Soiling of the game ball according to the invention can easily be eliminated by the fact that it is subsequently cleaned, for example washed off, without the danger as in The known game balls exist that the polyurethane foam becomes damp. Thus, the game ball according to the invention also has after a comparatively long time its light weight and its high elasticity as well as its color and keep it during this time it also had good playing characteristics at the beginning.

The protective layer can be applied particularly easily if the material is a plastic, for example polyvinyl chloride or polyurethane.

According to a further feature, the protective layer is also colored. As a result, it is no longer necessary to color the polyurethane foam completely, as is the case with the known game balls, for which a large amount of dye is required, but it is sufficient to use the relatively thin protective layer and thus to color a relatively small mass in order to enable eye-friendly play with the game ball according to the invention. The slightly higher production costs for the game ball according to the invention caused by the protective layer are reduced by the much smaller amount of dye used to color the protective layer is partially compensated for.

Further features and details of the invention emerge from the following description of an exemplary embodiment shown in the drawing.
Show it:

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FIG. 1 shows a game ball in a partially broken away view;

FIG. 2 shows the detail II according to FIG. 1, on a larger scale.

In Figure 1 is a total of 1 designated game ball shown. The core 2 of this ball consists of a foam, for example polyurethane foam, and has pores 4 open on its surface 3 and reaching into the core 2 (cf. FIG. 2).

On the surface 3 is, as can be seen on the basten from Figure 2, a protective layer which covers and closes the pores 4 and is made of a material which repels water and / or dirt upset. The layer can be applied, for example, by means of dipping or spraying. Preferably a colored plastic, for example polyvinyl chloride or polyurethane, is used for the protective layer.

It is also particularly favorable that the coating compound is added subsequently can easily be provided with company or advertising imprints.

7814995 08/31/78

Claims (1)

PATENTANWÄLTE ', .'... * '. '..' MANITZ, FINSTERWALD & GRÄMKOW P / SL-D 2314 Munich, May 1st, 1978 DUNLOP AG
Dunlopstrasse 2 6450 Hanau / Main Protection claims 1. Game ball with open pores on its surface, preferably made of a foamed plastic, for. B. Polyurethane jm based on polyether or polyester, characterized in that the surface (3) has a surface covering the pores (Ό) Protective layer (5) is provided. 2. Game ball according to claim 1, characterized in that the protective layer (5) consists of a water and / or dirt repellent material consists. 3. game ball according to claim 2, characterized in that the material is a plastic. OR. C. MANlTZ · DIPL. -INC. M. FINSTERWALD DIP L. -INC. W. GR AM KO W ZENTRALKASSE BAVER. FOLK BANKS β MONCHtN 3Ϊ. ROBERT-KOCH-STRASSE I 7 STUTTGART SO <BAD CANNSTATTI MÖNCHEN, ACCOUNT NUMU [R 7270 TEL. 10891 2 0 «3 M. TtLtX 0» - 29672 PATMF SEELBE RCSTR. 23 / 2S. TEL. 107 11) 56 73 61 POSTSCHECK : MÖNCHEN 77062-805 7814995 08/31/78 k. Game ball according to one of Claims 1 to 3j characterized in that the protective layer (5) consists of polyvinyl chloride. 5. game ball according to any one of claims 1 to 3i characterized in that the protective layer (5) consists of polyurethane. 6. Game ball according to one of claims 1 to 5i characterized in that the protective layer (5) is colored. 7814995 08/31/7B