EP0130623B1 - Racket with a longitudinally shiftable grip sleeve - Google Patents

Racket with a longitudinally shiftable grip sleeve Download PDF

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Publication number
EP0130623B1
EP0130623B1 EP84107793A EP84107793A EP0130623B1 EP 0130623 B1 EP0130623 B1 EP 0130623B1 EP 84107793 A EP84107793 A EP 84107793A EP 84107793 A EP84107793 A EP 84107793A EP 0130623 B1 EP0130623 B1 EP 0130623B1
Authority
EP
European Patent Office
Prior art keywords
racket
impression
grip sleeve
wedge
handle sleeve
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
EP84107793A
Other languages
German (de)
French (fr)
Other versions
EP0130623A1 (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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Puma AG Rudolf Dassler Sport filed Critical Puma AG Rudolf Dassler Sport
Priority to AT84107793T priority Critical patent/ATE24841T1/en
Publication of EP0130623A1 publication Critical patent/EP0130623A1/en
Application granted granted Critical
Publication of EP0130623B1 publication Critical patent/EP0130623B1/en
Expired legal-status Critical Current

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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
    • 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
    • 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
    • A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations

Definitions

  • the present invention relates to a ball game racket according to the preamble of claim 1.
  • Such a ball game racket is known from DE-U-70 14 518.
  • an oval longitudinal bore is provided on one side between the grip sleeve and the club shaft, the longitudinal axis of the ellipse extending in the plane of separation of the grip sleeve and shaft.
  • a cross-sectionally adapted oval pin can be inserted into this hole.
  • the grip sleeve can be wedged to the shaft.
  • the handle can be shortened in this way and the normal length is identified by a marking, which is not described in more detail.
  • the short handle length set for a young person is increased imperceptibly towards normal size, which can result in excessive stress on the arm joints and arm muscles.
  • the grip sleeve detaches completely from the shaft, since the end position is not recognizable. In the event of a stroke, the racket can be thrown out of the grip sleeve and other players or other people or things can be endangered or damaged.
  • the invention has for its object to design a ball game racket of the generic type so that a continuous adjustment of the grip sleeve is possible with simple means and the risk of unwanted automatic adjustment of the grip sleeve on the shaft or loosening the same from the shaft is safely avoided.
  • the conscious or intentional adjustment of the grip sleeve should be able to be checked at any time.
  • the invention has the particular advantage that each player has a ball game racket; especially tennis rackets, from normal size to their playing style, playing technique, etc. can be customized.
  • the embossing and / or the imprint serve as an adjustment mark for the handle length. Due to the arrangement of the embossing and / or the imprint in the adjustment area of the end edge of the grip sleeve, no special viewing windows have to be provided in the grip sleeve.
  • a grip sleeve 3 is guided so as to be longitudinally displaceable. Its position can be changed and adjusted by an adjusting screw 4. This is done by a tongue and groove connection between the adjusting screw 4 and the grip sleeve 3 and a threaded guide of the adjusting screw 4 in a threaded bore 5 in the end of the shaft 1.
  • the tongue and groove connection is here by a circumferential groove 5 in the head 7 of the adjusting screw 4 and one or more spring parts 10, which can be inserted, for example, into a recess 8 in the grip sleeve end face 9.
  • the springs can be designed as individual teeth or wall surfaces.
  • the adjusting screw 4 is rotatable in the grip sleeve 3, but is axially and radially immovable. By screwing or unscrewing the adjusting screw 4 into the threaded bore 5, the grip sleeve 3 can be displaced longitudinally with respect to the shaft 1 and the handle length of the racket can thus be adjusted.
  • An indentation 13 is provided on the shaft 1, at least in the adjustment region 11 of the front end edge 12 of the grip sleeve 3, which is more or less covered by the grip sleeve 3 depending on the setting position thereof.
  • Crosspieces 14 are advantageously provided in order to obtain an easier overview of the set position of the grip sleeve 3.
  • the spacing of the crosspieces 14 from one another is expediently between 1 mm and 5mm and the length of the crosspieces 14 can optionally also decrease to one side, as shown in FIG. 1. Instead of the impression 13 or in addition to this, an imprint can also be applied.
  • Imprints and / or impressions can expediently be used to mark the balance, ie the weight distribution or the shifting of the center of gravity of the racket, that is to say as balance or weight symbols, for example from front to back with L, LM and M for "low", “low / medium “and” medium “, possibly in addition to the above-mentioned imprints and / or impressions.
  • Imprinting in an embossment has the advantage that it is not so easily worn out.
  • the embossing 13 and / or the imprint can have, for example, a rectangular or square shape or, as shown in FIG. 2, a wedge or arrow shape, or it can have a double wedge shape according to FIG. 3, the two wedges 15 and 16 preferably being mounted in opposite directions.
  • the two opposing wedges 15, 16 are advantageously differently shaped, for example one wedge 15 with a transverse rib and the other wedge 16 with a longitudinal rib and / or a differently colored print can be provided.
  • the indentation 13 can also be baked, for example in the form of a brand.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)
  • Laminated Bodies (AREA)
  • Fishing Rods (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Finger-Pressure Massage (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

1. A racket, in particular a tennis racket, having a handle sleeve (3) which is able to shift longitudinally along the shank (1) of the racket and to be fixed in any position, a marking being provided for at least one position, characterized in that the longitudinal shifting and the fixing of the handle sleeve (3) is effected by means of a setting-screw (4) effective between the handle sleeve (3) and the shank (1) of the racket and that the marking extends over at least the range of adjustment (11) of the front and edge (12) of the handle sleeve (3) and is applied to the shank (1) of the racket as an impression (13) and/or imprint.

Description

Die vorliegende Erfindung bezieht sich auf einen Ballspielschläger gemäß dem Oberbegriff des Anspruches 1.The present invention relates to a ball game racket according to the preamble of claim 1.

Ein derartiger Ballspielschläger ist aus dem DE-U-70 14 518 bekannt. Zur Arretierung der Griffhülse ist dort an einer Seite zwischen Griffhülse und Schlägerschaft eine ovale Längsbohrung vorgesehen, deren Ellipsenlängsachse sich in der Trennebene von Griffhülse und Schaft erstreckt. In diese Bohrung ist ein im Querschnitt angepaßter, ovaler Stift einsteckbar. Durch Drehen des Stiftes um bis zu 90° kann die Griffhülse mit dem Schaft verkeilt werden. Der Griff kann auf diese Weise verkürzt werden und die Normallänge ist durch eine nicht näher beschriebene Markierung gekennzeichnet. Infolge der beim Spielen auftretenden harten Schläge und der dadurch ausgelösten Vibrationen ist eine allmähliche Verstellung der Griffhülse nicht auszuschließen. Dadurch wird die für einen Jugendlichen eingestellte kurze Grifflänge zur Normalgröße hin unmerkbar vergrößert, wodurch Überbeanspruchungen der Armgelenke und der Armmuskulatur auftreten können. Schließlich kann es auch vorkommen, daß sich die Griffhülse vollkommen vom Schaft löst, da die Endstellung nicht erkennbar ist. Dabei kann bei einem Schlag der Schläger aus der Griffhülse herausgeschleudert und es können andere Spieler oder sonstige Personen oder Sachen gefährdet bzw. beschädigt werden.Such a ball game racket is known from DE-U-70 14 518. To lock the grip sleeve, an oval longitudinal bore is provided on one side between the grip sleeve and the club shaft, the longitudinal axis of the ellipse extending in the plane of separation of the grip sleeve and shaft. A cross-sectionally adapted oval pin can be inserted into this hole. By turning the pin by up to 90 °, the grip sleeve can be wedged to the shaft. The handle can be shortened in this way and the normal length is identified by a marking, which is not described in more detail. As a result of the hard blows that occur during play and the vibrations caused by this, a gradual adjustment of the grip sleeve cannot be ruled out. As a result, the short handle length set for a young person is increased imperceptibly towards normal size, which can result in excessive stress on the arm joints and arm muscles. Finally, it can also happen that the grip sleeve detaches completely from the shaft, since the end position is not recognizable. In the event of a stroke, the racket can be thrown out of the grip sleeve and other players or other people or things can be endangered or damaged.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, einen Ballspielschläger der gattungsgemäßen Art so auszugestalten, daß eine kontinuierliche Verstellung der Griffhülse mit einfachen Mitteln möglich ist und die Gefahr der ungewollten selbsttätigen Verstellung der Griffhülse auf dem Schaft oder das Lösen derselben vom Schaft sicher vermieden wird. Darüber hinaus soll die bewußte bzw. gewollte Verstellung der Griffhülse jederzeit kontrolliert werden können.In contrast, the invention has for its object to design a ball game racket of the generic type so that a continuous adjustment of the grip sleeve is possible with simple means and the risk of unwanted automatic adjustment of the grip sleeve on the shaft or loosening the same from the shaft is safely avoided. In addition, the conscious or intentional adjustment of the grip sleeve should be able to be checked at any time.

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.

Aus der DE-B-1 112 435 ist zwar bereits die Festlegung des Schaftes eines Ballspielschlägers, insbesondere Tennisschlägers, an der Griffhülse mittels einer Klemmschraube bekannt; dort wird aber die Schraube in die Bohrung eines mit einem Längsschlitz versehenen Schaftes eingeschraubt, wobei durch Auseinanderspreitzen des Schaftes ein Anpressen des Schaftes gegen die Innenwandung der Griffhülse bewirkt wird. Eine kontinuierliche Verstellung der Griffhülse ist dadurch nicht möglich.From DE-B-1 112 435, the fixing of the shaft of a ball game racket, in particular tennis racket, to the grip sleeve by means of a clamping screw is already known; there, however, the screw is screwed into the bore of a shaft provided with a longitudinal slot, wherein the shaft is pressed apart by pressing the shaft against the inner wall of the grip sleeve. A continuous adjustment of the grip sleeve is not possible.

Die Erfindung bietet insbesondere den Vorteil, daß jeder Spieler einen Ballspielschläger; insbesondere Tennisschläger, von Normalgröße an seine Spielweise, Spieltechnik usw. individuell anpassen kann. Die Einprägung und/oder der Aufdruck dienen hierbei als Einstellmarkierung für die Grifflänge. Durch die Anordnung der Einprägung und/oder des Aufdrucks im Verstellbereich der Endkante der Griffhülse müssen keine besonderen Sichtfenster in der Griffhülse vorgesehen werden.The invention has the particular advantage that each player has a ball game racket; especially tennis rackets, from normal size to their playing style, playing technique, etc. can be customized. The embossing and / or the imprint serve as an adjustment mark for the handle length. Due to the arrangement of the embossing and / or the imprint in the adjustment area of the end edge of the grip sleeve, no special viewing windows have to be provided in the grip sleeve.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Further advantageous embodiments of the invention are specified in the subclaims.

Die Erfindung wird anhand der in der Zeichnung veranschaulichten Ausführungs beispiele beschrieben. Dabei zeigen:

  • Figur 1 einen Griff eines erfindungsgemäßen Ballschlägers von oben gesehen, teilweise im Schnitt,
  • Figur 2 eine keilförmige Einprägung auf dem Schaft und
  • Figur 3 eine gegensinnig-doppelkeilförmige Einprägung auf dem Schaft.
The invention is described using the exemplary embodiments illustrated in the drawing. Show:
  • 1 shows a handle of a ball racket according to the invention seen from above, partly in section,
  • Figure 2 shows a wedge-shaped impression on the shaft and
  • Figure 3 shows an opposing double wedge-shaped impression on the shaft.

Mit 1 ist ein an einem nicht dargestellten, die Bespannungsfläche umgebenden Rahmen anschließender Schaft eines Ballspielschlägers, insbesondere Tennisschläger, bezeichnet. Auf dessen Endbereich 2 ist eine Griffhülse 3 längsverschiebbar geführt. Sie ist durch eine Einstellschraube 4 in ihrer Position veränderbar und einstellbar. Dies geschieht durch eine Nut-Feder-Verbindung zwischen Einstellschraube 4 und Griffhülse 3 und eine Gewindeführung der Einstellschraube 4 in einer Gewindebohrung 5 im Ende des Schaftes 1. Die Nut-Feder-Verbindung ist hierbei durch eine umlaufende Nut 5 im Kopf 7 der Einstellschraube 4 und eine oder mehrere, beispielsweise in eine Vertiefung 8 der Griffhülsenstirnseite 9 einsetzbare Federteile 10 hergestellt. Die Federn können dabei als einzelne Zähne oder Wandflächen ausgebildet sein. Durch diese Maßnahme ist die Einstellschraube 4 in der Griffhülse 3 drehbar, jedoch axial und radial unverschiebbar gelagert. Durch Ein- oder Ausschrauben der Einstellschraube 4 in die Gewindebohrung 5 kann die Griffhülse 3 gegenüber dem Schaft 1 längsverschoben und damit die Grifflänge des Schlägers verstellt werden.1 denotes a shaft of a ball game racket, in particular a tennis racket, adjoining a frame, not shown, surrounding the covering surface. On its end region 2, a grip sleeve 3 is guided so as to be longitudinally displaceable. Its position can be changed and adjusted by an adjusting screw 4. This is done by a tongue and groove connection between the adjusting screw 4 and the grip sleeve 3 and a threaded guide of the adjusting screw 4 in a threaded bore 5 in the end of the shaft 1. The tongue and groove connection is here by a circumferential groove 5 in the head 7 of the adjusting screw 4 and one or more spring parts 10, which can be inserted, for example, into a recess 8 in the grip sleeve end face 9. The springs can be designed as individual teeth or wall surfaces. By this measure, the adjusting screw 4 is rotatable in the grip sleeve 3, but is axially and radially immovable. By screwing or unscrewing the adjusting screw 4 into the threaded bore 5, the grip sleeve 3 can be displaced longitudinally with respect to the shaft 1 and the handle length of the racket can thus be adjusted.

Auf dem Schaft 1 ist zumindest im Verstellbereich 11 der vorderen Endkante 12 der Griffhülse 3 eine Einprägung 13 vorgesehen, die durch die Griffhülse 3 je nach Einstellposition derselben mehr oder weniger überdeckt ist. Vorteilhafterweise sind Querstege 14 vorgesehen, um eine leichtere Übersicht über die eingestellte Position der Griffhülse 3 zu erhalten. Der Abstand der Querstege 14 voneinander beträgt zweckmäßig zwischen 1 mm und 5mm und die Länge der Querstege 14 kann gegebenenfalls zusätzlich, wie in Fig. 1 dargestellt, nach einer Seite hin abnehmen. Anstelle der Einprägung 13 oder zusätzlich zu dieser kann auch ein Aufdruck angebracht sein.An indentation 13 is provided on the shaft 1, at least in the adjustment region 11 of the front end edge 12 of the grip sleeve 3, which is more or less covered by the grip sleeve 3 depending on the setting position thereof. Crosspieces 14 are advantageously provided in order to obtain an easier overview of the set position of the grip sleeve 3. The spacing of the crosspieces 14 from one another is expediently between 1 mm and 5mm and the length of the crosspieces 14 can optionally also decrease to one side, as shown in FIG. 1. Instead of the impression 13 or in addition to this, an imprint can also be applied.

Aufdrucke und/oder Einprägungen können zweckmäßig zur Markierung der Balance, d.h. der Gewichtsverteilung bzw. der Verlagerung des Schwerpunkts des Schlägers, also als Balance-oder Gewichtssymbole, beispielsweise von vorn nach hinten mit L, LM und M für "low", "low/ medium" und "medium", gegebenenfalls zusätzlich zu den vorgenannten Aufdrucken und/oder Einprägungen, vorgesehen sein. Ein Aufdruck in einer Einprägung hat dabei den Vorteil, daß er nicht so leicht abgenutzt wird.Imprints and / or impressions can expediently be used to mark the balance, ie the weight distribution or the shifting of the center of gravity of the racket, that is to say as balance or weight symbols, for example from front to back with L, LM and M for "low", "low / medium "and" medium ", possibly in addition to the above-mentioned imprints and / or impressions. Imprinting in an embossment has the advantage that it is not so easily worn out.

Die Einprägung 13 und/oder der Aufdruck kann beispielsweise rechteckig oder quadratisch oder, wie in Fig. 2 dargestellt, Keil- oder Pfeilform aufweisen oder er kann gemäß Fig. 3 DoppelKeilform aufweisen, wobei die beiden Keile 15 und 16 vorzugsweise gegenläufig angebracht sind. Vorteilhaft sind die beiden gegenläufigen Keile 15, 16 unterschiedlich geprägt, beispielsweise der eine Keil 15 mit einer Quer-und der andere Keil 16 mit einer Längsrippung und/oder es kann ein andersfarbiger Aufdruck vorgesehen sein. Die Einprägung 13 kann auch eingebrannt sein, beispielsweise in Form eines Brandzeichens.The embossing 13 and / or the imprint can have, for example, a rectangular or square shape or, as shown in FIG. 2, a wedge or arrow shape, or it can have a double wedge shape according to FIG. 3, the two wedges 15 and 16 preferably being mounted in opposite directions. The two opposing wedges 15, 16 are advantageously differently shaped, for example one wedge 15 with a transverse rib and the other wedge 16 with a longitudinal rib and / or a differently colored print can be provided. The indentation 13 can also be baked, for example in the form of a brand.

Auch wenn das Hauptanwendungsgebiet der Erfindung Tennisschläger betrifft, so kann diese mit Vorteil auch bei anderen Arten von Ballschlägern, wie Squash-Schlägern, Federball-Schlägern usw. eingesetzt werden.Even if the main field of application of the invention relates to tennis rackets, it can advantageously also be used with other types of ball rackets, such as squash rackets, badminton rackets, etc.

Claims (7)

1. A racket, in particular a tennis racket, having a handle sleeve (3) which is able to shift longitudinally along the shank (1) of the racket and to be fixed in any position, a marking being provided for at least one position, characterized in that the longitudinal shifting and the fixing of the handle sleeve (3) is effected by means of a setting-screw (4) effective between the handle sleeve (3) and the shank (1) of the racket and that the marking extends over at least the range of adjustment (11) of the front and edge (12) of the handle sleeve (3) and is applied to the shank (1) of the racket as an impression (13) and/or imprint.
2. A racket as in Claim 1, characterized in that the impression (13) and/or the imprint exhibit crossbars (14) arranged at equal distances of from 1 mm to 5mm apart.
3. A racket as in Claim 1 or 2, characterized in that the impression (13) and/or the imprint exhibit a rectangular shape.
4. A racket as in Claim 1 or 2, characterized in that the impression (13) exhibits a wedge shape.
5. A racket as in Claim 1, 2 or 3, characterized in that the impression (13) exhibits a double wedge shape in opposite directions.
6. A racket as in Claim 5, characterized in that the one wedge (15) has an impression and/or imprint of another kind from the other wedge (16) in the opposite direction.
7. A racket as in Claim 5, characterized in that , the one wedge (15) is kept in a different colour from the other wedge (16) in the opposite direction.
EP84107793A 1983-07-05 1984-07-04 Racket with a longitudinally shiftable grip sleeve Expired EP0130623B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84107793T ATE24841T1 (en) 1983-07-05 1984-07-04 BALL GAME RACKET WITH HANDLE SLIDING LONGITUDINALLY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3324141 1983-07-05
DE3324141A DE3324141C1 (en) 1983-07-05 1983-07-05 Ball racket with longitudinally adjustable grip sleeve

Publications (2)

Publication Number Publication Date
EP0130623A1 EP0130623A1 (en) 1985-01-09
EP0130623B1 true EP0130623B1 (en) 1987-01-14

Family

ID=6203160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107793A Expired EP0130623B1 (en) 1983-07-05 1984-07-04 Racket with a longitudinally shiftable grip sleeve

Country Status (8)

Country Link
EP (1) EP0130623B1 (en)
JP (1) JPS6036072A (en)
KR (1) KR850001000A (en)
AT (1) ATE24841T1 (en)
AU (1) AU568659B2 (en)
CA (1) CA1231354A (en)
DE (2) DE8319336U1 (en)
ES (1) ES289152Y (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3324143A1 (en) * 1983-07-05 1985-01-17 Puma-Sportschuhfabriken Rudolf Dassler Kg, 8522 Herzogenaurach BALL RACKETS, IN PARTICULAR TENNIS RACKETS
DE3332291A1 (en) * 1983-09-07 1985-03-28 Puma-Sportschuhfabriken Rudolf Dassler Kg, 8522 Herzogenaurach BALL RACKETS, IN PARTICULAR TENNIS RACKETS
US5037097A (en) * 1988-08-18 1991-08-06 Athletic Alternatives, Inc. Sports racket
JP4732212B2 (en) * 2006-03-28 2011-07-27 株式会社東和電機製作所 Fish collection method and fish collection lamp device used therefor
WO2024182876A1 (en) * 2023-03-08 2024-09-12 Sportusport Ltd. Adjustable racket

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7014618U (en) * 1900-01-01 Winter H
US2475927A (en) * 1945-05-31 1949-07-12 Verderber Joseph Golf club
DE1112435B (en) * 1957-01-18 1961-08-03 Willy Harnisch Handle for the stick of a racket, especially a tennis racket
AU1155966A (en) * 1967-09-21 1969-03-27 Stromberg Alexander Improvements relating to extensible handles for brooms andother articles
JPS4934937B1 (en) * 1969-11-17 1974-09-18
US3674267A (en) * 1970-07-08 1972-07-04 Bancroft Racket Co Adjustable grip for an elongated handle of a game device
JPS534475B2 (en) * 1971-10-28 1978-02-17
US3833218A (en) * 1973-03-14 1974-09-03 R Frenkel Game racket
JPS5828666B2 (en) * 1975-06-26 1983-06-17 ソニー株式会社 Eizojiyouhousaiseisouchi
DE2753192A1 (en) * 1977-11-29 1979-06-07 Fritzmeier Ag Tennis racquet with adjustable centre of gravity - has adjustable weight located in hollow inside shaft and moved by guide rod
DE3324143A1 (en) * 1983-07-05 1985-01-17 Puma-Sportschuhfabriken Rudolf Dassler Kg, 8522 Herzogenaurach BALL RACKETS, IN PARTICULAR TENNIS RACKETS
US4691926A (en) * 1983-09-07 1987-09-08 Puma Ag Rudolf Dassler Sport Racket, especially a tennis racket, having a grip sleeve with spring elements

Also Published As

Publication number Publication date
JPS6036072A (en) 1985-02-25
ES289152U (en) 1986-02-16
AU568659B2 (en) 1988-01-07
CA1231354A (en) 1988-01-12
KR850001000A (en) 1985-03-14
DE3324141C1 (en) 1985-01-31
ATE24841T1 (en) 1987-01-15
DE8319336U1 (en) 1985-11-14
EP0130623A1 (en) 1985-01-09
ES289152Y (en) 1986-10-01
AU3028284A (en) 1985-01-10

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