EP0134473B1 - Racket, especially a tennis racket - Google Patents

Racket, especially a tennis racket Download PDF

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Publication number
EP0134473B1
EP0134473B1 EP84107794A EP84107794A EP0134473B1 EP 0134473 B1 EP0134473 B1 EP 0134473B1 EP 84107794 A EP84107794 A EP 84107794A EP 84107794 A EP84107794 A EP 84107794A EP 0134473 B1 EP0134473 B1 EP 0134473B1
Authority
EP
European Patent Office
Prior art keywords
racket
handle
shank
adjusting disc
resp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84107794A
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German (de)
French (fr)
Other versions
EP0134473A1 (en
Inventor
Günter Adam
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Puma SE
Original Assignee
Puma AG Rudolf Dassler Sport
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Filing date
Publication date
Application filed by Puma AG Rudolf Dassler Sport filed Critical Puma AG Rudolf Dassler Sport
Priority to AT84107794T priority Critical patent/ATE25003T1/en
Publication of EP0134473A1 publication Critical patent/EP0134473A1/en
Application granted granted Critical
Publication of EP0134473B1 publication Critical patent/EP0134473B1/en
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    • 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
    • A63B49/08—Frames with special construction of the handle
    • 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
    • A63B60/22—Adjustable handles
    • A63B60/28—Adjustable handles with adjustable length
    • 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
    • A63B60/22—Adjustable handles
    • A63B60/30—Adjustable handles with adjustable circumference

Definitions

  • the present invention relates to a ball racket, in particular tennis racket, according to the first part of claim 1.
  • Such a ball racket is known from DE-A-2 030 998.
  • a short shaft section is provided on the frame, which can be designed as a handle. This initially forms a ball racket with an extremely short handle.
  • a threaded blind hole is provided on the front of the shaft section and the ball racket is assigned a number of rod sections, which may be of different lengths, each having a threaded blind hole on one front and a threaded pin on the other front.
  • the length of the stem or shaft can be adjusted by screwing on one or more, possibly of different lengths, stem sections.
  • handle sections can be provided as the end piece, which also have different lengths and / or thicknesses from one another.
  • stem sections must be round, since otherwise an exact screw connection is not possible. In addition, they either have to be made entirely of high-strength material, such as metal, which makes them very heavy, or they consist, for example, of plastic, in which case high-strength metal thread inserts or bushings have to be molded in in order to achieve sufficient strength. Finally, the stem sections must be secured against twisting.
  • stem sections instead of the stem sections made of solid material, stem sections can consist of telescopically collapsible and extendable tube sections or sleeves. A large number of holding pins can be provided for fine gradation of the handle length.
  • the present invention is intended to achieve the object of designing a ball racket, in particular tennis racket, of the type mentioned in such a way that the length of the racket handle is simple and simple, that is to say without great expenditure on accessories, in terms of skill, style of play and / or the strength of the player, preferably also continuously, can be adjusted.
  • the present invention is characterized in that only a single screw connection is required in order to firmly clamp the individual shims and the grip head with the shaft.
  • a coarse or fine adjustment can be made at any time, depending on the choice of the shims.
  • a fine adjustment is particularly easy to carry out if at least one elastic, volume-compressible and therefore variable in thickness is used.
  • the use of compressible adjusting disks and an adjusting screw also enables the length of the club handle to be adjusted continuously.
  • 1 denotes the end of a non-circular cross-section, for example a 4-sided or 8-sided handle shaft 2, which is preferably composed of two half-shells and which is followed by a ball racket field (not shown) of a ball racket, in particular a tennis racket.
  • a 4-sided or 8-sided handle shaft 2 which is preferably composed of two half-shells and which is followed by a ball racket field (not shown) of a ball racket, in particular a tennis racket.
  • pins 4 in particular made of metal or tough elastic plastic, are attached to the front 3 of the shaft end 1 in the axial direction of the handle shaft 2. These pins 4 protrude approximately 2 cm to 5 cm from the front 3 of the shaft end 1.
  • a central bore 5 shim 6 either made of compact, non-compressible material, such as plastic, wood, metal or the like, or from compressible, in particular volume-compressible material, such as foamed plastic, natural, synthetic rubber or the like threaded on.
  • the outer contour of the shim 6 is adapted to that of the handle shaft 2.
  • a plurality of shims 61, 62, 63 can also be provided, preferably also with different sheave thicknesses.
  • the adjusting disc 6 or adjusting discs 61, 62, 63 are covered by a grip head 7 which is firmly connected to the grip shaft 2 by means of a screw 9.
  • a grip head 7 which is firmly connected to the grip shaft 2 by means of a screw 9.
  • the handle band 2 which usually surrounds the handle shaft 2 is designated by 14.
  • the extension of the handle shaft can make the ball racket "heavier for the player or” lighter “by shortening the shaft.
  • the racket length can already be set to a sufficiently fine level for many applications.
  • the screw 9 is designed as an adjusting screw which is guided through an opening 8 in the grip head 7.
  • the screw shaft 10 is screwed into a threaded blind hole 11 at the end of the handle shaft 2, the screw head 12 pressing from the outside against the end wall 13 of the handle head 7 and thereby compressing the adjusting washers 6 and 61, 62, 63 more or less depending on the screwing depth .
  • the compressible, preferably volume-compressible adjusting disks 6 or 61, 62, 63 are more or less compressed, as a result of which the total length of the handle shaft 2 or of the ball racket can be adjusted continuously.
  • the shims 6 and 61, 62, 63 are used only for rough gradation of the length of the ball racket, while the fine gradation is achieved by the adjusting force of the adjusting screw 9. This results in a shift in weight so that, for example, a “medium” racket can be adjusted in the direction of “low” or “high”, and can thus be adapted at any time to the skill, the playing style and / or the strength of the player.
  • the handle end 1 or the handle 2 are wrapped in a manner known per se with a grip tape 14. .
  • the shim 6 or the shims 61, 62, 63 can have a self-centering shape, so that when they are placed on the correspondingly shaped front 3 of the shaft end 1 and by pressing the handle head 7 with the Adjusting washers 6 or 61, 62, 63 also adapted inner end face 15 to the adjusting washers 6 or 61, 62, 63 by means of the adjusting screw 9 are automatically pulled or pressed into the correct axial position.
  • the shims 6 and 61, 62, 63, the front 3 and the end face 15 of the grip head 7 are plate-shaped.
  • the plate rim 16 causes centering.
  • a cone or pyramid shape or a disk shape with concentric wave and valley rings or similar configurations can also be provided.
  • a sleeve attachment 17 can be formed on the grip head 7, which, according to the upper half of FIG. 2, only overlaps the adjusting disks 6 or 61, 62, 63.
  • the racket length is adjusted with the grip tape 14 removed, which is then fastened again in a known manner.
  • the sleeve extension 17 can, however, also extend over the entire handle length, for example 20-30 cm long, as shown in the lower half of FIG. In this embodiment, the fine adjustment of the racket length is possible without removing the grip 14.
  • a mark 19 is advantageously embossed and / or printed on the handle shaft 2 in the region of the end edge 18 of the sleeve attachment 17, which, in conjunction with the end edge 18 of the sleeve attachment 17 (according to the design of the lower half of FIG. 2), has an adjustment mark, for example a scale, forms. This allows the player to easily adjust the racket to the desired «severity.
  • the resetting of the grip head 7 is effected in both variants of FIG. 2 by the elasticity of the adjusting disc (s) 6 or 61, 62, 63.
  • any not too soft, rubber-elastic material in particular soft elastomers such as rubber, soft polyvinyl chloride, soft polyurethane, preferably in foamed form, foam or foam rubber or else is suitable as material for the adjusting washers 6 or 61, 62, 63 compressible copolymers or the like ...
  • the grip head 7, optionally with the sleeve extension 17, advantageously consists of metal, such as aluminum, zinc die-cast or zinc injection molding, brass, bronze etc., or of a tough elastic plastic, such as hard polyvinyl chloride, hard polyurethane, polyamide, polyethylene, polypropylene , Polystyrene etc.
  • the sleeve extension 17 has a circumferential recess 20 at the end of the handle shaft 2 on the field of impact, the length of which corresponds to the maximum adjustment of the shims 6 or 61, 62, 63 by compression.
  • the recess 20 can be covered by a cover plate 21 or also completely filled with volume-compressible material, such as foam plastic.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)
  • Laminated Bodies (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Executing Machine-Instructions (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Prostheses (AREA)
  • Toys (AREA)

Abstract

1. A racket, in particular a tennis racket, having a handle with a shank (2) of which the shank end (1) exhibits in the front face (3) of it a central tapped hole (11), where for elongation of the length of the shank at least one part of the handle constituting a length-adjusting element and an endpiece may be screwed onto the front face (3), characterized in that the length-adjusting element is or elements are made as (an) adjusting disc(s) (6; 61, 62, 63) provided with one central drilled hole (5), that the endpiece is formed by a handle head (7) provided with a central opening (8) and that the handle head (7) and the adjusting disc(s) (6; 61, 62, 63) are screwed firmly onto the shank end (1) by a common screw (9) which passes through the central drilled hole (5) and the central opening (8) and may be screwed into the tapped hole (11) in the shank end (1).

Description

Die vorliegende Erfindung bezieht sich auf einen Ballschläger, insbesondere Tennisschläger, gemäß dem ersten Teil des Anspruches 1.The present invention relates to a ball racket, in particular tennis racket, according to the first part of claim 1.

Ein derartiger Ballschläger ist aus der DE-A-2 030 998 bekannt. Dort ist am Rahmen ein kurzer Schaftabschnitt vorgesehen, der als Handgriff ausgebildet sein kann. Dadurch ist zunächst ein Ballschläger mit extrem kurzem Stiel gebildet. Zur Verlängerung desselben ist an der Frontseite des Schaftabschnittes ein Gewindesackloch vorgesehen und dem Ballschläger ist eine Anzahl von - gegebenenfalls unterschiedlich langenstabförmigen Stielabschnitten zugeordnet, die jeweils an einer Frontseite ein Gewindesackloch und an der jeweils anderen Frontseite einen Gewindezapfen besitzen. Durch Anschrauben eines oder mehrerer, gegebenenfalls unterschied- 'lich langer, Stielabschnitte kann die Länge des Stiels oder Schaftes eingestellt werden. Schließlich können als Endstück Griffabschnitte vorgesehen sein, die ebenfalls untereinander unterschiedliche Länge und/oder Dicke besitzen. Diese Stielabschnitte müssen rund sein, da eine winkelgenaue Verschraubung anderenfalls grundsätzlich nicht möglich ist. Außerdem müssen sie entweder ganz aus hochfestem Material, wje Metall, bestehen, wobei sie dann sehr schwer sind, oder sie bestehen beispielsweise aus Kunststoff, wobei dann hochfeste Metallgewindeeinsätze oder -buchsen eingeformt werden müssen, um eine ausreichende Festigkeit zu erzielen. Schließlich müssen die Stielabschnitte gegenüber gegenseitigem Verdrehen gesichert werden.Such a ball racket is known from DE-A-2 030 998. There, a short shaft section is provided on the frame, which can be designed as a handle. This initially forms a ball racket with an extremely short handle. To extend the same, a threaded blind hole is provided on the front of the shaft section and the ball racket is assigned a number of rod sections, which may be of different lengths, each having a threaded blind hole on one front and a threaded pin on the other front. The length of the stem or shaft can be adjusted by screwing on one or more, possibly of different lengths, stem sections. Finally, handle sections can be provided as the end piece, which also have different lengths and / or thicknesses from one another. These stem sections must be round, since otherwise an exact screw connection is not possible. In addition, they either have to be made entirely of high-strength material, such as metal, which makes them very heavy, or they consist, for example, of plastic, in which case high-strength metal thread inserts or bushings have to be molded in in order to achieve sufficient strength. Finally, the stem sections must be secured against twisting.

Gemäß einer anderen Ausführungsform können anstelle der Stielabschnitte aus Vollmaterial Stielabschnitte aus teleskopartig zusammenschiebbaren und auseinanderziehbaren Rohrabschnitten oder Hülsen bestehen. Zur feinen Abstufung der Grifflänge kann eine Vielzahl von Haltestiften vorgesehen sein.According to another embodiment, instead of the stem sections made of solid material, stem sections can consist of telescopically collapsible and extendable tube sections or sleeves. A large number of holding pins can be provided for fine gradation of the handle length.

Mit der vorliegenden Erfindung soll demgegenüber die Aufgabe gelöst werden, einen Ballschläger, insbesondere Tennisschläger, der genannten Art so auszugestalten, daß die Länge des Schlägergriffes in einfacher Weise und mit einfachen Mitteln, also ohne großen Zubehöraufwand, an das Können, die Spielweise und/oder die Kraft des Spielers, vorzugsweise auch stufenlos, angepaßt werden kann.In contrast, the present invention is intended to achieve the object of designing a ball racket, in particular tennis racket, of the type mentioned in such a way that the length of the racket handle is simple and simple, that is to say without great expenditure on accessories, in terms of skill, style of play and / or the strength of the player, preferably also continuously, can be adjusted.

Diese Aufgabe wird durch die im Kennzeichen des Anspruches 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of claim 1.

Die vorliegende Erfindung zeichnet sich dadurch aus, daß nur eine einzige Schraubverbindung erforderlich ist, um die einzelnen Einstellscheiben und den Griffkopf mit dem Schaft fest zu verspannen. Es kann jederzeit entsprechend der Wahl der Einstellscheiben eine Grob- oder Feineinstellung vorgenommen werden. Dabei ist eine.Feineinstellung insbesondere dann sehr leicht durchführbar, wenn hierbei wenigstens eine elastische, volumenkompressible und damit in ihrer Dicke veränderbare Einstellscheibe verwendet wird.The present invention is characterized in that only a single screw connection is required in order to firmly clamp the individual shims and the grip head with the shaft. A coarse or fine adjustment can be made at any time, depending on the choice of the shims. A fine adjustment is particularly easy to carry out if at least one elastic, volume-compressible and therefore variable in thickness is used.

Es hat sich herausgestellt, daß für die gewünschte Längenanpassung eine Verstellung der Grifflänge von 2 cm bis 4 cm ausreicht. Durch die Verlängerung wirkt der Ballschläger für den Spieler «schwerer» und durch die Verkürzung « leichter ». Durch die Verwendung unterschiedlich vieler und/oder unterschiedlich dicker Einstellscheiben kann dadurch ein « Medium ,,-Schläger in der Wirkung schwerer oder leichter gemacht werden. Es genügt daher grundsätzlich ein Ballschlägertyp für alle bisher als notwendig erachteten Ballschlägergewichte.It has been found that an adjustment of the handle length of 2 cm to 4 cm is sufficient for the desired length adjustment. The extension makes the ball racket “heavier” for the player and “shorter” for the shortening. By using differently and / or differently thick shims, a «medium» racket can be made heavier or lighter in effect. A type of ball racket is therefore generally sufficient for all ball racket weights previously considered necessary.

In Weiterbildung der Erfindung kann bei Verwendung kompressibler Einstellscheiben und einer Einstellschraube auch eine stufenlose Verstellung der Länge des Schlägergriffes erzielt werden.In a further development of the invention, the use of compressible adjusting disks and an adjusting screw also enables the length of the club handle to be adjusted continuously.

Weitere vorteilhafte Einzelheiten der Erfindung sind in den Unteransprüchen angegeben und werden nachfolgend anhand der in der Zeichnung veranschaulichten Ausführungsbeispiele beschrieben. Dabei zeigen :

  • Figur 1 eine Seitenansicht eines Schläger-Griffschaftes im Schnitt und
  • Figur 2 eine gleiche Ansicht im Schnitt, wobei die obere Hälfte einen Griffkopf mit kurzem Hülsenansatz und die untere Hälfte einen Griffkopf mit der Grifflänge entsprechendem Hülsenansatz zeigt.
Further advantageous details of the invention are specified in the subclaims and are described below with reference to the exemplary embodiments illustrated in the drawing. Show:
  • Figure 1 is a side view of a club handle shaft in section and
  • Figure 2 is a same view in section, the upper half showing a handle head with a short sleeve attachment and the lower half of a handle head with the handle length corresponding sleeve attachment.

In beiden Figuren ist mit 1 das Ende eines im Querschnitt unrunden, beispielsweise 4-eckigen oder 8-eckigen Griffschaftes 2 bezeichnet, der sich vorzugsweise aus zwei Halbschalen zusammensetzt und an den ein nicht dargestelltes Ballschlagfeld eines Ballschlägers, insbesondere Tennisschlägers, anschließt.In both figures, 1 denotes the end of a non-circular cross-section, for example a 4-sided or 8-sided handle shaft 2, which is preferably composed of two half-shells and which is followed by a ball racket field (not shown) of a ball racket, in particular a tennis racket.

In Figur 1 sind an der Frontseite 3 des Schaftendes 1 in Achsrichtung des Griffschaftes 2 verlaufende Stifte 4, insbesondere aus Metall oder zähelastischem Kunststoff, befestigt. Diese Stifte 4 ragen etwa 2 cm bis 5 cm aus der Frontseite 3 des Schaftendes 1 heraus. Auf die Stifte 4 ist eine mit einer zentrischen Bohrung 5 versehene Einstellscheibe 6 entweder aus kompaktem, nicht kompressiblem Material, wie Kunststoff, Holz, Metall oder dgl., oder aus kompressiblem, insbesondere volumenkompressiblem Material, wie geschäumtem Kunststoff, Natur-, Kunstgummi oder dgl. aufgefädelt. Die Außenkontur der Einstellscheibe 6 ist derjenigen des Griffschaftes 2 angepaßt. Wie dargestellt, können auch mehrere Einstellscheiben 61, 62, 63, vorzugsweise auch mit unterschiedlicher Scheibendicke, vorgesehen sein.In FIG. 1, pins 4, in particular made of metal or tough elastic plastic, are attached to the front 3 of the shaft end 1 in the axial direction of the handle shaft 2. These pins 4 protrude approximately 2 cm to 5 cm from the front 3 of the shaft end 1. On the pins 4 is provided with a central bore 5 shim 6 either made of compact, non-compressible material, such as plastic, wood, metal or the like, or from compressible, in particular volume-compressible material, such as foamed plastic, natural, synthetic rubber or the like threaded on. The outer contour of the shim 6 is adapted to that of the handle shaft 2. As shown, a plurality of shims 61, 62, 63 can also be provided, preferably also with different sheave thicknesses.

Die Einstellscheibe 6 bzw. Einstellscheiben 61, 62, 63 sind durch einen Griffkopf 7 abgedeckt, der mittels einer Schraube 9 fest mit dem Griffschaft 2 verbunden ist. Je nach Anzahl oder Dicke der verwendeten Einstellscheiben 6 bzw. 61, 62, 63 kann also die Grifflänge variabel eingestellt werden, wodurch eine Anpassung an die Spieleigenschaften, an das Können oder an die Kraft des Spielers jederzeit möglich ist. Mit 14 ist das den Griffschaft 2 üblicherweise umgebende Griffband bezeichnet.The adjusting disc 6 or adjusting discs 61, 62, 63 are covered by a grip head 7 which is firmly connected to the grip shaft 2 by means of a screw 9. Depending on the number or thickness of the shims 6 or 61, 62, 63 used So the handle length can be adjusted variably, whereby an adaptation to the game characteristics, to the skill or to the strength of the player is possible at any time. The handle band 2, which usually surrounds the handle shaft 2, is designated by 14.

Wie bereits einleitend erwähnt, kann durch die Verlängerung des Griffschaftes der Ballschläger für den Spieler « schwerer oder durch die Verkürzung des. Schaftes « leichter » gemacht werden. Bei Verwendung nicht zu dicker Einstellscheiben 61, 62, 63 von beispielsweise einer Dicke von nur wenigen Millimetern kann die Schlägerlänge für viele Anwendungsfälle bereits ausreichend feinstufig eingestellt werden.As already mentioned in the introduction, the extension of the handle shaft can make the ball racket "heavier for the player or" lighter "by shortening the shaft. When using shims 61, 62, 63 that are not too thick, for example with a thickness of only a few millimeters, the racket length can already be set to a sufficiently fine level for many applications.

Im Falle der Verwendung kompressibler, insbesondere volumenkompressibler Einstellscheiben 6 bzw. 61, 62, 63 ist die Schraube 9 als Einstellschraube ausgebildet, die durch eine Öffnung 8 im Griffkopf 7 geführt ist. Der Schraubenschaft 10 ist in ein Gewinde-Sackloch 11 am Ende des Griffschaftes 2 eingeschraubt, wobei der Schraubenkopf 12 von außen gegen die Stirnwand 13 des Griffkopfes 7 drückt und dabei die Einstellscheiben 6 bzw. 61, 62, 63 je nach Einschraubtiefe mehr oder weniger zusammendrückt.In the case of the use of compressible, in particular volume-compressible adjusting disks 6 or 61, 62, 63, the screw 9 is designed as an adjusting screw which is guided through an opening 8 in the grip head 7. The screw shaft 10 is screwed into a threaded blind hole 11 at the end of the handle shaft 2, the screw head 12 pressing from the outside against the end wall 13 of the handle head 7 and thereby compressing the adjusting washers 6 and 61, 62, 63 more or less depending on the screwing depth .

Je nach Einstellung der Einstellschraube 9 werden die kompressiblen, vorzugsweise volumenkompressiblen Einstellscheiben 6 bzw. 61, 62, 63 mehr oder weniger zusammengedrückt, wodurch sich die Gesamtlänge des Griffschaftes 2 bzw. des Ballschlägers stufenlos verstellen läßt. Bei dieser Ausgestaltung der Erfindung dienen also die Einstellscheiben 6 bzw. 61, 62, 63 nur zur groben Abstufung der Ballschlägerlänge, während die Feinabstufung durch die Einstellkraft der Einstellschraube 9 erzielt wird. Dadurch erhält man eine Gewichtsverlagerung, so daß beispielsweise ein « Medium »- Schläger in Richtung « low » oder « high » verstellbar ist, und damit an das Können, die Spielweise und/oder die Kraft des Spielers jederzeit angepaßt werden kann. Das Griffende 1 bzw. der Griff 2 sind in an sich bekannter Weise mit einem Griffband 14 umwickelt. .Depending on the setting of the adjusting screw 9, the compressible, preferably volume-compressible adjusting disks 6 or 61, 62, 63 are more or less compressed, as a result of which the total length of the handle shaft 2 or of the ball racket can be adjusted continuously. In this embodiment of the invention, the shims 6 and 61, 62, 63 are used only for rough gradation of the length of the ball racket, while the fine gradation is achieved by the adjusting force of the adjusting screw 9. This results in a shift in weight so that, for example, a “medium” racket can be adjusted in the direction of “low” or “high”, and can thus be adapted at any time to the skill, the playing style and / or the strength of the player. The handle end 1 or the handle 2 are wrapped in a manner known per se with a grip tape 14. .

Anstelle der Stifte 4 oder zusätzlich zu diesen kann die Einstellscheibe 6 bzw. können die Einstellscheiben 61, 62, 63 eine selbstzentrierende Form aufweisen, so daß sie beim Aufsetzen an die entsprechend geformte Frontseite 3 des Schaftendes 1 und durch Andrücken des Griffkopfes 7 mit der den Einstellscheiben 6 bzw. 61, 62, 63 ebenfalls angepaßten inneren Stirnfläche 15 an die Einstellscheiben 6 bzw. 61, 62, 63 mittels der Einstellschraube 9 von selbst in die richtige axiale Lage gezogen bzw. gedrückt werden. Hierzu sind die Einstellscheiben 6 bzw. 61. 62. 63. die Frontseite 3 und die Stirnfläche 15 des Griffkopfes 7 tellerförmig ausgebildet. Der Tellerrand 16 bewirkt dabei die Zentrierung. Anstelle einer Tellerform kann auch eine Kegel- oder Pyramidenform vorgesehen sein oder eine Scheibenform mit konzentrischen Wellen- und Talringen oder ähnlichen Ausgestaltungen.Instead of the pins 4 or in addition to these, the shim 6 or the shims 61, 62, 63 can have a self-centering shape, so that when they are placed on the correspondingly shaped front 3 of the shaft end 1 and by pressing the handle head 7 with the Adjusting washers 6 or 61, 62, 63 also adapted inner end face 15 to the adjusting washers 6 or 61, 62, 63 by means of the adjusting screw 9 are automatically pulled or pressed into the correct axial position. For this purpose, the shims 6 and 61, 62, 63, the front 3 and the end face 15 of the grip head 7 are plate-shaped. The plate rim 16 causes centering. Instead of a plate shape, a cone or pyramid shape or a disk shape with concentric wave and valley rings or similar configurations can also be provided.

Gemäß der in Figur 2 gezeigten Ausgestaltung der Erfindung kann am Griffkopf 7 ein Hülsenansatz 17 angeformt sein, der gemäß der oberen Hälfte der Figur 2 nur die Einstellscheiben 6 bzw. 61, 62, 63 übergreift. Bei dieser Ausführung erfolgt die Einstellung der Schlägerlänge bei abgenommenem Griffband 14, das anschließend wieder in bekannter Weise befestigt wird.According to the embodiment of the invention shown in FIG. 2, a sleeve attachment 17 can be formed on the grip head 7, which, according to the upper half of FIG. 2, only overlaps the adjusting disks 6 or 61, 62, 63. In this embodiment, the racket length is adjusted with the grip tape 14 removed, which is then fastened again in a known manner.

Der Hülsenansatz 17 kann sich jedoch auch über die gesamte, beispielsweise 20-30 cm lange Grifflänge erstrecken, wie anhand der unteren Hälfte der Figur 2 gezeigt ist. Bei dieser Ausführung ist die Feineinstellung der Schlägerlänge ohne Abnahme des Griffbandes 14 möglich.The sleeve extension 17 can, however, also extend over the entire handle length, for example 20-30 cm long, as shown in the lower half of FIG. In this embodiment, the fine adjustment of the racket length is possible without removing the grip 14.

Vorteilhaft ist im Bereich des Endrandes 18 des Hülsenansatzes 17 auf dem Griffschaft 2 eine Markierung 19 eingeprägt und/oder aufgedruckt, die in Verbindung mit dem Endrand 18 des Hülsenansatzes 17 (gemäß Ausführung der unteren Hälfte der Figur 2) eine Einstellmarkierung, beispielsweise eine Skala, bildet. Dadurch kann der Spieler den Ballschläger leicht auf die gewünschte « Schwere einstellen. Die Rückstellung des Griffkopfes 7 wird bei beiden Varianten der Figur 2 durch die Elastizität der Einstellscheibe(n) 6 bzw. 61, 62, 63 bewirkt.A mark 19 is advantageously embossed and / or printed on the handle shaft 2 in the region of the end edge 18 of the sleeve attachment 17, which, in conjunction with the end edge 18 of the sleeve attachment 17 (according to the design of the lower half of FIG. 2), has an adjustment mark, for example a scale, forms. This allows the player to easily adjust the racket to the desired «severity. The resetting of the grip head 7 is effected in both variants of FIG. 2 by the elasticity of the adjusting disc (s) 6 or 61, 62, 63.

Als Material für die Einstellscheiben 6 bzw. 61, 62, 63 eignet sich jeder nicht zu weiche, gummielastische Werkstoff, insbesondere Weich-Elastomere, wie Kautschuk, Weich-Polyvinylchlorid, Weich-Polyurethan, vorzugsweise in geschäumter Form, Schaum- oder Moosgummi oder auch kompressible Mischpolymerisate oder dgl...Any not too soft, rubber-elastic material, in particular soft elastomers such as rubber, soft polyvinyl chloride, soft polyurethane, preferably in foamed form, foam or foam rubber or else is suitable as material for the adjusting washers 6 or 61, 62, 63 compressible copolymers or the like ...

Der Griffkopf 7, gegebenenfalls mit dem Hülsenansatz 17, besteht vorteilhafterweise aus Metall, wie beispielsweise Aluminium, Zinkdruck- oder Zinkspritzguß, Messing, Bronze etc., oder aus einem zähelastischen Kunststoff, wie Hart-Polyvinylchlorid, Hart-Polyurethan, Polyamid, Polyäthylen, Polypropylen, Polystyrol etc..The grip head 7, optionally with the sleeve extension 17, advantageously consists of metal, such as aluminum, zinc die-cast or zinc injection molding, brass, bronze etc., or of a tough elastic plastic, such as hard polyvinyl chloride, hard polyurethane, polyamide, polyethylene, polypropylene , Polystyrene etc.

Der Hülsenansatz 17 besitzt am schlagfeldseitiger Ende des Griffschaftes 2 eine umlaufende Ausnehmung 20, deren Länge der maximalen Verstellung der Einstellscheiben 6 bzw. 61, 62, 63 durch Kompression entspricht. Die Ausnehmung 20 kann durch eine Abschlußscheibe 21 abgedeckt oder ebenfalls mit volumenkompressiblem Material, wie Schaumkunststoff, vollständig ausgefüllt sein.The sleeve extension 17 has a circumferential recess 20 at the end of the handle shaft 2 on the field of impact, the length of which corresponds to the maximum adjustment of the shims 6 or 61, 62, 63 by compression. The recess 20 can be covered by a cover plate 21 or also completely filled with volume-compressible material, such as foam plastic.

Claims (14)

1. A racket, in particular a tennis racket, having a handle with a shank (2) of which the shank end (1) exhibits in the front face (3) of it a central tapped hole (11 where for elongation of the length of the shank at least one part of the handle constituting a length-adjusting element and an endpiece may be screwed onto the front face (3), characterized in that the length-adjusting element is or elements are made as (an) adjusting disc(s) (6 ; 61, 62, 63) provided with one central drilled hole (5), that the endpiece is formed by a handle head (7) provided with a central opening (8) and that the handle head (7) and the adjusting disc(s) (6 ; 61, 62, 63) are screwed firmly onto the shank end (1) by a common screw (9) which passes through the central drilled hole (5) and the central opening (8) and may be screwed into the tapped hole (11) in the shank end (1).
2. A racket as in Claim 1, characterized in that the adjusting disc(s) (6 resp. 61, 62, 63) consist(s) of compact incompressible material.
3. A racket as in Claim 1, characterized in that the adjusting disc(s) (6 resp. 61, 62, 63) consist(s) of yielding material which is compressible, in particular compressible in volume.
4. A racket as in Claim 1, characterized in that the handle head (7) and the shank (2) of the handle may be adjusted relatively to one another in the axial direction by altering the thickness of the adjusting disc(s) (6 resp. 61, 62, 63).
5. A racket as in Claim 4, characterized in that the adjusting disc(s) (6 resp. 61, 62, 63) are fixed in position on pins (4) projecting in the longitudinal direction into the shank (2) of the handle and/or into the handle head (7).
6. A racket as in Claim 4 or 5, characterized in that the adjusting disc(s) (6 resp. 61, 62, 63) are made if necessary additionally self-centreing and the inner endface (15) of the handle head (17) as well as the front face (3) of the shank (2) of the handle are adapted to the self-centreing shape of the adjusting disc(s) (6 resp. 61, 62, 63).
7. A racket as in one of the Claims 4 to 6, characterized in that the handle head (7) exhibits a sleeve extension (17) which surrounds the shank (2) of the handle practically without play but able to shift along it.
8. A racket as in Claim 7, characterized in that the sleeve extension (17) extends over the whole length of the handle.
9. A racket as in Claim 7 or 8, characterized in that the edge (18) at the end of the sleeve extension (17) is able to shift over an adjustment marking (19) provided on the shank (2) of the handle in the range of adjustment of the said edge.
10. A racket as in one of the Claims 4 to 9, characterized in that the adjusting disc(s) (6 resp. 61, 62, 63) consist(s) of a soft elastomer such as rubber, soft polyvinylchloride, or soft polyurethane, also in the foamed form, or foam or sponge rubber.
11. A racket as in one of the Claims 1 to 10, characterized in that the handle head (7), if necessary with the sleeve extension (17), consists of metal.
12. A racket as in Claim 11, characterized in that the handle head (7) consists of aluminium, injection-moulded or die-cast zinc, brass or bronze.
13. A racket as in Claim 11, characterized in that the handle head (7), if necessary with the sleeve extension (17), consists of a toughly elastic plastics.
14. A racket as in Claim 13, characterized in that the handle head (7) consists of one of the plastics : hard polyvinylchloride, hard polyurethane, polyamide, polyethylene, polypropylene or polystyrene.
EP84107794A 1983-09-07 1984-07-04 Racket, especially a tennis racket Expired EP0134473B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84107794T ATE25003T1 (en) 1983-09-07 1984-07-04 BALL RACKETS, ESPECIALLY TENNIS RACKETS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3332291 1983-09-07
DE19833332291 DE3332291A1 (en) 1983-09-07 1983-09-07 BALL RACKETS, IN PARTICULAR TENNIS RACKETS

Publications (2)

Publication Number Publication Date
EP0134473A1 EP0134473A1 (en) 1985-03-20
EP0134473B1 true EP0134473B1 (en) 1987-01-21

Family

ID=6208477

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107794A Expired EP0134473B1 (en) 1983-09-07 1984-07-04 Racket, especially a tennis racket

Country Status (7)

Country Link
EP (1) EP0134473B1 (en)
JP (1) JPS6072574A (en)
KR (1) KR850002774A (en)
AT (1) ATE25003T1 (en)
AU (1) AU564423B2 (en)
DE (2) DE3332291A1 (en)
ES (1) ES289777Y (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5037097A (en) * 1988-08-18 1991-08-06 Athletic Alternatives, Inc. Sports racket
WO1994014506A1 (en) * 1992-12-23 1994-07-07 Rice Scott W Racket handle extender
US5478075A (en) * 1994-06-27 1995-12-26 Saia; Carman R. Golf club stabilizer
US5575722A (en) * 1994-06-27 1996-11-19 Vertebrex Golf L.L.C. Golf club stabilizer and method of stabilizing a golf club
WO2021013928A1 (en) * 2019-07-24 2021-01-28 Sport Extensions B.V. Sports gear having an extension
CN113274710A (en) * 2021-05-17 2021-08-20 平顶山学院 Intelligent flexible racket

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310470A (en) * 1960-10-27 1962-11-30 Plastic string racket frame
DE2030998A1 (en) * 1970-06-23 1971-12-30 Kranz, Vladimir, DipL-Ing., 8000 München Tennis racket
DE3324141C1 (en) * 1983-07-05 1985-01-31 Puma-Sportschuhfabriken Rudolf Dassler Kg, 8522 Herzogenaurach Ball racket with longitudinally adjustable grip sleeve
DE3332290C2 (en) * 1983-09-07 1986-11-27 Puma-Sportschuhfabriken Rudolf Dassler Kg, 8522 Herzogenaurach Ball game rackets, in particular tennis rackets, with a longitudinally adjustable handle

Also Published As

Publication number Publication date
AU3279884A (en) 1985-03-14
KR850002774A (en) 1985-05-20
DE3462087D1 (en) 1987-02-26
AU564423B2 (en) 1987-08-13
JPH021510B2 (en) 1990-01-11
EP0134473A1 (en) 1985-03-20
ATE25003T1 (en) 1987-02-15
DE3332291C2 (en) 1987-12-23
ES289777U (en) 1986-03-01
ES289777Y (en) 1986-10-16
JPS6072574A (en) 1985-04-24
DE3332291A1 (en) 1985-03-28

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