Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1990-07-24
1992-08-25
Marlo, George J.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
273 73A, A63B 5102
Patent
active
051412276
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to stringing for a racket for tennis, badminton or the like.
2. Description of the Prior Art
When stringing rackets for tennis, badminton or the like, use is made of a string cord which is successively passed through the holes of the racket frame. Each individual section or length of string between two holes is tightened individually by means of tightening devices, temporarily held firmly until the cord is passed over the frame on the outside into the next hole, and then released. In this process, the racket is frequently turned so that the tightening device can be attached. In the end, the entire stringing consists of one or perhaps two string cords. When the longitudinal strings have been fitted and tightened, the transverse strings must be passed through alternately over and under the longitudinal strings and likewise individually tightened. Altogether, this takes a relatively long time.
It is furthermore known from published German Patent Application 2,605,638, to use ready-made stringing, in which one or two string cords are fitted directly as a preassembled network. The ends of each of the adjacent strings are brought together and form a loop which is suspended in the racket frame by being pushed through an allocated hole and held either by a securing string extending around the frame, or the adjacent loop. This ready-made stringing can be used, however, only if the dimensions thereof exactly match those of the frame. In addition, it is unavoidable here that the strings assume, as a result of the loops, a more zigzag pattern at least during use and thereby might also lose tension. For permanently fastening the strings in the racket frame with these known types of stringing, the two free ends of each of the string cords are knotted.
From European Patent 0,260,671 stringing is known in the form of individual strings which are successively fitted to the racket frame and tightened. These individual strings are each held in the racket frame by means of rivet sleeves, rivet heads bearing against the outer holes. The securing of the ends of a string to the frame can also be effected by means of a wedge arrangement, as is known, for example, from published German Patent Application 3,034,285. However, a lot of time is required to fit and tighten the individual strings, and, as a result of passing the strings over strings which are already tightened, the process of stringing is awkward even for craftsmen.
SUMMARY OF THE INVENTION
The object of the invention therefore is to provide stringing which is suitable for any racket frame and considerably simplifies the work process on stringing.
In accordance with the present invention, a ready-made network comprised of two generally transversely oriented arrays of parallel strings is provided. This network permits stringing of a racket head, as in the case of strings fitted individually to the racket frame, but without the need for an elaborate threading-through of the individual strings. In the present invention, the strings for the stringing process are held in their predetermined position with respect to one another by means of an aligning device. In order to string a racket, the ready-made network can be brought into the racket head, it being possible for the free string ends to be passed through the respective associated holes of the racket frame. The strings can then be tightened individually or in groups. Thus, up to the stringing itself no forces are transmitted to the frame itself, as a result of which the latter is not deformed. The individual strings in the tightened state are secured in the holes of the frame by means of a wedge arrangement for instance, as is known from published German Patent Application 3,034,285. After loosening the tightener, the protruding string ends are cut off and the aligning device is preferably removed if it has not become detached independently.
The aligning device employed for the strings may be an adhesive film which extends over at least part o
REFERENCES:
patent: 2156092 (1939-04-01), Johnson
patent: 3834699 (1974-09-01), Pass
patent: 3966207 (1976-06-01), Pass
patent: 4118029 (1978-10-01), Septier
patent: 4149722 (1979-04-01), Yager
patent: 4741531 (1988-05-01), Szedressy
Marlo George J.
Passaniti Sebastiano
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