CH616849A5 - Metal frame for rackets, in particular for tennis, badminton or squash rackets - Google Patents
Metal frame for rackets, in particular for tennis, badminton or squash rackets Download PDFInfo
- Publication number
- CH616849A5 CH616849A5 CH1197576A CH1197576A CH616849A5 CH 616849 A5 CH616849 A5 CH 616849A5 CH 1197576 A CH1197576 A CH 1197576A CH 1197576 A CH1197576 A CH 1197576A CH 616849 A5 CH616849 A5 CH 616849A5
- Authority
- CH
- Switzerland
- Prior art keywords
- frame
- tube
- metal
- tennis
- rackets
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B49/00—Stringed rackets, e.g. for tennis
- A63B49/02—Frames
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B49/00—Stringed rackets, e.g. for tennis
- A63B49/02—Frames
- A63B49/03—Frames characterised by throat sections, i.e. sections or elements between the head and the shaft
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B49/00—Stringed rackets, e.g. for tennis
- A63B49/02—Frames
- A63B49/12—Frames made of metal
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/06—Handles
- A63B60/34—Handles with the handle axis different from the main axis of the implement
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Pulmonology (AREA)
- Golf Clubs (AREA)
Abstract
The use of metal for the frame permits each racket having a tubular cross-section to be made more flexible at the point (1) found by the designer to be too inflexible. This is achieved by squeezing the normal tube cross-section. <IMAGE>
Description
**WARNUNG** Anfang DESC Feld konnte Ende CLMS uberlappen **.
PATENTANSPRÜCHE
1. Metallrahmen für Ballschläger, insbesondere für Tennis-, Badminton- oder Squashschläger, dadurch gekennzeichnet, dass rohrförmige Metallteile des Rahmens zur Erhöhung der Flexibilität gequetscht sind.
2. Rahmen nach Patentanspruch 1, dadurch gekennzeichnet, dass der Rahmen aus einer Aluminiumlegierung hergestellt ist.
3. Rahmen nach Patentanspruch 1, dadurch gekennzeichnet, dass er zusätzlich mit von Rovings verstärktem Kunststoff verstärkt ist.
4. Rahmen nach Patentanspruch 1, dadurch gekennzeichnet, dass die Verquetschung (1) am Schaftteil vorgenommen ist.
5. Rahmen nach Patentanspruch 4, dadurch gekennzeichnet, dass bei einem einfachen, konischen Schaft eine Verquetschung vorgenommen ist.
6. Rahmen nach Patentanspruch 4, dadurch gekennzeichnet, dass bei einem Doppelschaft je eine spiegelsymmetrische Verquetschung vorgenommen ist.
Bisher sind Metallrahmen für Ballschläger, insbesondere für Tennis-, Badminton- oder Squashschläger, hergestellt aus Metallhohlprofilen (in der Folge Rohr genannt), bekannt.
Diese Rahmen werden hergestellt, indem ein einstückiges Rohr so gebogen wird, dass dadurch Schaft und Kopfschlaufe fugenlos entstehen. Die Form des Rohrquerschnittes wird durch die Formbiegung des Rohrstückes nicht verändert. Zur Vervollständigung zum fertigen Schlägerrahmen muss nur noch ein Griffteil und ein Herzstück aus Kunststoff oder Metall montiert werden. Diese Rahmen haben aber den Nachteil, dass ihre Flexibilität und die daraus resultierenden Spieleigenschaften von der Härte (Flexibilität) des verwendeten Rohres abhängt.
Das hat in der Praxis zur Folge, dass, wenn ein relativ unfiexibles Rohr verwendet wird, der Schaft zu wenig.8exibel wird und daraus resultierend für gewisse Einsatzzwecke, insbesondere das defensive Grundlinienspiel, mangelnde Spieleigenschaften aufweist oder sogar beim benützenden Spieler zu Verletzungen am Schlagarm führen kann. Anderseits, wenn ein verhältnismässig flexibles Rohr verwendet wird, wird die Kopfschlaufe zu wenig seiten- resp. verwindungsstabil und kann dadurch zu leicht deformiert werden und erlaubt ebenso nur eine, insbesondere für Wettkampfspieler ungenügende Ballkontrolle.
Zweck der Erfindung ist es, einen Metallrahmen aus verhältnismässig steifem Metallrohr vorzuschlagen, der frei von den oben erwähnten Nachteilen ist, indem bei den als zu wenig flexibel empfundenen Stellen am Rahmen durch Quetschen, d. h. durch Verändern des Rohrquerschnittes, die gewünschte Flexibilität hergestellt resp. erreicht wird. Die Verquetschung kann vor, nach oder während der Formbiegung des Rohres zur Rahmenendform durch Pressen, Walzen oder ein sonstiges geeignetes Verfahren vorgenommen werden. Mit der gleichen Methode können auch Schäfte von Federball- (Badminton) und Squash-Schlägem, die sich beim Spielen als zu steif erweisen, flexibler gemacht werden.
In vorteilhafter Ausführungsform werden jeweilen Teile des Schaftes in der Nähe des eigentlichen Schlagdrehpunktes gequetscht. Durch diese Konstruktion wird es möglich, sonst unüblich harteund dauerhafte Metallegierungen für Tennis-, Badminton- oder Squashrahmen und deren Schäfte einzusetzen, die dennoch dank der oben beschriebenen örtlichen Verquetschung ideale Spieleigenschaften bekommen.
In der Folge wird die Erfindung anhand eines Ausführungsbeispiels schematisch näher beschrieben.
Es zeigen:
Fig. 1 einen Tennisrahmen in Draufsicht,
Fig. 2 einen Tennisrahmen in Seitenansicht,
Fig. 3 einen Schnitt entlang der Linie II-II der Fig. 1,
Fig. 4 einen Schnitt entlang der Linie I-I der Fig. 1.
Obwohl die Ausführungsform nach Fig. 1 und Fig. 2 besonders bevorzugt ist, kann die Verquetschung 1, falls es die Spieleigenschaften erfordern resp. zulassen, auch an einer anderen Stelle des beschriebenen Rahmens 2 sein, oder der Rahmen selbst kann mit einer anderen, für das Spiel zweckmässigen Grundform ausgeführt werden, wodurch zahlreiche Gestaltungsmöglichkeiten möglich werden. Zweckmässigerweise sollte eine Aluminiumlegierung verwendet werden, gegebenenfalls können es aber auch andere geeignete Materialien sein. Griff 3 und Herzstück 4 können aus sich vom Rahmen unterscheidendem Material sein.
** WARNING ** beginning of DESC field could overlap end of CLMS **.
PATENT CLAIMS
1. Metal frame for ball rackets, in particular for tennis, badminton or squash rackets, characterized in that tubular metal parts of the frame are squeezed to increase flexibility.
2. Frame according to claim 1, characterized in that the frame is made of an aluminum alloy.
3. Frame according to claim 1, characterized in that it is additionally reinforced with plastic reinforced by rovings.
4. Frame according to claim 1, characterized in that the crushing (1) is made on the shaft part.
5. Frame according to claim 4, characterized in that a crushing is carried out with a simple, conical shaft.
6. Frame according to claim 4, characterized in that in each case a mirror-symmetrical squeeze is made in a double shaft.
So far, metal frames for ball rackets, in particular for tennis, badminton or squash rackets, made from hollow metal profiles (hereinafter referred to as tube) are known.
These frames are made by bending a one-piece tube so that the shaft and head loop are created without joints. The shape of the pipe cross section is not changed by the bending of the pipe section. To complete the finished racket frame, only a handle and a heart made of plastic or metal need to be installed. However, these frames have the disadvantage that their flexibility and the resulting playing characteristics depend on the hardness (flexibility) of the tube used.
In practice, this means that if a relatively unfiexible tube is used, the shaft becomes too little flexible and, as a result, lacks playing characteristics for certain purposes, in particular defensive baseline play, or even injures the blow arm of the player using it can. On the other hand, if a relatively flexible tube is used, the head loop is too little side or torsionally stable and can therefore be deformed too easily and also only allows for insufficient ball control, especially for competitive players.
The purpose of the invention is to propose a metal frame made of a relatively rigid metal tube, which is free from the disadvantages mentioned above, by squeezing at the points on the frame which are perceived as not being sufficiently flexible, i. H. by changing the pipe cross-section, the desired flexibility is produced or. is achieved. The squeezing can be carried out before, after or during the bending of the tube to the final frame shape by pressing, rolling or another suitable method. The same method can also be used to make the shafts of badminton and squash sticks, which turn out to be too stiff when playing, to be made more flexible.
In an advantageous embodiment, respective parts of the shaft are squeezed in the vicinity of the actual fulcrum. This construction makes it possible to use otherwise unusually hard and durable metal alloys for tennis, badminton or squash frames and their shafts, which nevertheless get ideal playing characteristics thanks to the local crushing described above.
In the following, the invention is described schematically in more detail using an exemplary embodiment.
Show it:
1 is a tennis frame in plan view,
2 a tennis frame in side view,
3 shows a section along the line II-II of FIG. 1,
FIG. 4 shows a section along the line I-I of FIG. 1.
Although the embodiment according to FIG. 1 and FIG. 2 is particularly preferred, the pinch 1 can, if the playing characteristics require or. allow, also be at a different location of the frame 2 described, or the frame itself can be designed with a different basic shape that is expedient for the game, as a result of which numerous design options are possible. An aluminum alloy should expediently be used, but it may also be other suitable materials. Handle 3 and centerpiece 4 can be made of different material from the frame.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1197576A CH616849A5 (en) | 1976-09-20 | 1976-09-20 | Metal frame for rackets, in particular for tennis, badminton or squash rackets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1197576A CH616849A5 (en) | 1976-09-20 | 1976-09-20 | Metal frame for rackets, in particular for tennis, badminton or squash rackets |
Publications (1)
Publication Number | Publication Date |
---|---|
CH616849A5 true CH616849A5 (en) | 1980-04-30 |
Family
ID=4378649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1197576A CH616849A5 (en) | 1976-09-20 | 1976-09-20 | Metal frame for rackets, in particular for tennis, badminton or squash rackets |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH616849A5 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2543842A1 (en) * | 1983-04-09 | 1984-10-12 | Pawlicki Ulrich | RACKET FOR BALL GAMES, PARTICULARLY TENNIS RACKET |
FR2608443A1 (en) * | 1986-12-20 | 1988-06-24 | Hong Jin San | SPORTS RACKET HAVING A PERFECTED SLEEVE |
US5110125A (en) * | 1988-04-26 | 1992-05-05 | Skis Rossignol S. A. | Sport racket |
US5217223A (en) * | 1991-07-11 | 1993-06-08 | Lisco, Inc. | Tennis racket with metal/composite frame |
US5249799A (en) * | 1992-07-24 | 1993-10-05 | Chang Chen Chung | Racket including a metal reinforced throat section |
US5344139A (en) * | 1993-11-09 | 1994-09-06 | Jan Sports Products Corp. | Racket shaft mounting device |
US10328316B1 (en) | 2018-03-12 | 2019-06-25 | Wilson Sporting Goods Co. | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis |
-
1976
- 1976-09-20 CH CH1197576A patent/CH616849A5/en not_active IP Right Cessation
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2543842A1 (en) * | 1983-04-09 | 1984-10-12 | Pawlicki Ulrich | RACKET FOR BALL GAMES, PARTICULARLY TENNIS RACKET |
FR2608443A1 (en) * | 1986-12-20 | 1988-06-24 | Hong Jin San | SPORTS RACKET HAVING A PERFECTED SLEEVE |
US5110125A (en) * | 1988-04-26 | 1992-05-05 | Skis Rossignol S. A. | Sport racket |
US5217223A (en) * | 1991-07-11 | 1993-06-08 | Lisco, Inc. | Tennis racket with metal/composite frame |
US5249799A (en) * | 1992-07-24 | 1993-10-05 | Chang Chen Chung | Racket including a metal reinforced throat section |
US5344139A (en) * | 1993-11-09 | 1994-09-06 | Jan Sports Products Corp. | Racket shaft mounting device |
US10328316B1 (en) | 2018-03-12 | 2019-06-25 | Wilson Sporting Goods Co. | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis |
US10646753B2 (en) | 2018-03-12 | 2020-05-12 | Wilson Sporting Goods Co. | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis |
US10653924B2 (en) | 2018-03-12 | 2020-05-19 | Wilson Sporting Goods Co. | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis |
US10751581B2 (en) | 2018-03-12 | 2020-08-25 | Wilson Sporting Goods Co. | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis |
US10946253B2 (en) | 2018-03-12 | 2021-03-16 | Wilson Sporting Goods Co. | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis |
US11541282B2 (en) | 2018-03-12 | 2023-01-03 | Wilson Sporting Goods Co. | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis |
US11986706B2 (en) | 2018-03-12 | 2024-05-21 | Wilson Sporting Goods Co. | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis |
US11986705B2 (en) | 2018-03-12 | 2024-05-21 | Wilson Sporting Goods Co. | Racquet configured with increased flexibility in multiple directions with respect to a longitudinal axis |
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Legal Events
Date | Code | Title | Description |
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PL | Patent ceased |