EP0343507B1 - Ballspielschläger, insbesondere Tennis- oder Squashschläger - Google Patents

Ballspielschläger, insbesondere Tennis- oder Squashschläger Download PDF

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Publication number
EP0343507B1
EP0343507B1 EP89108928A EP89108928A EP0343507B1 EP 0343507 B1 EP0343507 B1 EP 0343507B1 EP 89108928 A EP89108928 A EP 89108928A EP 89108928 A EP89108928 A EP 89108928A EP 0343507 B1 EP0343507 B1 EP 0343507B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
portions
ball
frame
connecting studs
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 - Lifetime
Application number
EP89108928A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0343507A2 (de
EP0343507A3 (en
Inventor
Martin Poschenrieder
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0343507A2 publication Critical patent/EP0343507A2/de
Publication of EP0343507A3 publication Critical patent/EP0343507A3/de
Application granted granted Critical
Publication of EP0343507B1 publication Critical patent/EP0343507B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A63B49/10—Frames made of non-metallic materials, other than wood
    • 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
    • A63B60/08—Handles characterised by the material
    • 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
    • A63B2049/0205—Frames comprising at least two similar parts assembled with the interface plane parallel to the string plane
    • 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
    • A63B2049/0211—Frames with variable thickness of the head in a direction perpendicular to the string plane
    • 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
    • A63B49/10—Frames made of non-metallic materials, other than wood
    • A63B2049/103—Frames made of non-metallic materials, other than wood string holes produced during moulding process
    • 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
    • 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
    • A63B60/10—Handles with means for indicating correct holding positions

Definitions

  • the invention relates to a ball game racket according to the preamble of claim 1.
  • a ball game racket of this type is known as a badminton racket (DE-B-1 089 675).
  • the frame which is made of plastic, consists of two frame halves which are connected to one another by means of connecting pins and connecting openings accommodating them, which are each partially formed in projections projecting beyond the one frame half. Between the two frame halves, a plate-like or grid-like striking part made of plastic is arranged, which forms the "covering" of the badminton racket and has openings at the edge through which the projections extend.
  • This training known in a badminton racket is completely unsuitable for tennis or squash rackets, in part because a lattice-like, one-piece shaped striking part, which in the known badminton racket contributes significantly to its stability, is not used as a covering for tennis or squash rackets can. Furthermore, the forces and loads occurring in a badminton racket are not at all comparable to the much larger forces occurring in a tennis or squash racket. Especially in the known badminton racket, the lattice-like striking member has a mass which is relatively large in comparison to the balls usually used in badminton games, so that for this reason the load on the frame when playing is relatively low.
  • the invention has for its object to develop a ball game racket of the type mentioned in that it is suitable as a tennis or squash racket.
  • a tennis or squash racket is advantageously achieved, which can be manufactured simply and inexpensively and yet, with the lowest possible weight, fully fulfills the special requirements that are placed on a tennis or squash racket, particularly with regard to strength, resilience and rigidity corresponds.
  • the strings forming the covering of the two-part racket are fastened to the connecting pins or to the sleeve-like sections, the forces acting on the covering when the racket is used are applied directly to the connecting areas between the two frame halves on the head or frame of the racket transfer. This power transmission takes place where it is optimal from a static or dynamic point of view.
  • the two frame halves are not only each with their entire cross-sectional profile as loads or forces absorbing elements effective, but also directly connected to each other on their open cross-sectional side that the cross-sectional profiles of both frame halves ultimately one Form hollow body, which is effective in all areas of its wall surrounding the interior of the hollow body as a force-absorbing element.
  • the frame of the tennis racket shown in the figures consists of a head 1 for the strings 3 formed by strings 2 and of the handle 5, which is connected to the head 1 via a heart 4 formed by the two webs 4a and 4b.
  • the frame formed by the head 1, the heart 4 and the handle 5 is composed of two frame halves 6 and 7, which are made of carbon fiber reinforced plastic by molding under pressure.
  • halves 6, 7, which connect to form the frame on both sides of a covering plane 3 including the central plane M, are each made with a head half 1 ', with a heart half 4' and with a handle half 5 ', both frame halves 6, 7 in all these areas in cross-section are essentially bowl-shaped in such a way that the tennis racket in the finished state, ie in the case of halves 6, 7 connected to one another, essentially in the region of the head 1 and also in the region of the heart 4 and the handle 5, forms a hollow body which is closed towards the outside.
  • the lowest possible weight for the tennis racket is obtained with sufficient stability and strength.
  • each connecting pin 8 and each sleeve-like section 10 are arranged so that in each half 6 and 7 along the head 1 and along the two Heart bars 4a, 4b each have a section 10 following a connecting pin 8, each connecting pin 8 and each sleeve-like section 10 each being provided in the area of a cross-sectional central axis QM of the respective head or heart area running perpendicular to the central plane M (FIGS. 5 and 7).
  • Each connecting pin 8 and each sleeve-like projection 10 concentrically surrounds this cross-sectional central axis QM.
  • the connecting pins 8 and the sections 10 are each formed identically in all areas of the frame halves 6, 7 in the embodiment shown, with the connecting pins 8 in the illustrated embodiment for optimum stability with the least possible material consumption and thus with the lowest possible weight for the tennis racket in the embodiment shown and the sections 10 on the head halves 1 'in those areas where the longitudinal axis L intersects these head halves 1', on the heart halves 4 'and on the handle halves 5' each have a greater mutual distance from one another than at the two, with respect to the Longitudinal axis L outer areas of the head halves 1 'or the head 1, where particularly high forces, in particular also torsional forces in the head 1 and thus also occur between the two frame halves 6, 7 when using the tennis racket.
  • the two frame halves 6, 7 are each identical and formed or shaped symmetrically to the longitudinal axis L, which in particular also with regard to the arrangement or distribution of the connecting pins 8 and section 10 applies so that two halves 6 and 7 made with the same tool can then be connected to one another to form a frame.
  • the two frame halves 6, 7 and the two head halves 1 ', but also the two heart halves 4' in the region of the webs 4a, 4b each have a shell-like cross-sectional profile wall 11, which in 5 has a curved course corresponding to half an oval or half an ellipse, so that, according to FIG. 5, the overall dimension X in the direction of the axis QM is substantially larger than the dimension Y in the direction of a perpendicular and in the Center plane M lying cross-sectional axis, which also contributes to a high stability of the tennis racket with low weight.
  • each connecting pin 8 has an outer diameter that is greater than half the dimension Y.
  • each section 10 is formed such that it on the open side of the frame half 6 and 7, ie in the region of the longitudinal sides 12 and 13, the portion used to receive a connecting pin 8 9 ' with a larger cross section and then has a section 9abêt with a reduced cross section.
  • Each connecting pin 8 is then supported with its free end on the paragraph formed between the two sections 9 'and 9' of the opening 9 concerned.
  • each connecting pin 8 in the associated sleeve-like section 10 is defined, but on the other hand a further reinforcement of the frame halves 6 and 7 is achieved in the area of these sections 10.
  • the length of the connecting pin 8 is chosen with a corresponding design of the frame halves 6 and 7 on the long sides 12 and 13 so that when halves 6 and 7 are joined together, at least in the region of each connecting pin 8 there is a gap between the halves 6 and 7, ie the long sides 12 and 13 have a distance from one another there. This makes it possible to use the connecting pins 8 for fastening the strings 2 or the covering 3.
  • the interlocking frame halves 6, 7 with their connecting pins 8 and the associated sections 10 are additionally connected to one another by appropriate measures, namely by screwing, gluing or preferably by welding (ultrasound welding).
  • the connecting pins 8 have at least in their respective section 9 'engaging length a cross-section deviating from the circular shape, for example an oval or part-circular cross-section with a rectilinear circumferential region.
  • Other cross-sectional shapes deviating from the circular shape are also conceivable here, the partial region 9 'of each section 10 having a cross-section adapted to it.
  • FIG. 7 shows an embodiment known per se (DE 34 08 175 A1), in which the connecting pin 8 used to fasten the covering 3 or the length of the frame halves 6 and 7 exposed therefrom
  • a connecting pin 8 with a circumferential groove 14 provided with a ring 15 is freely rotatable.
  • the string 2 in question then lies in this circumferential groove 14 with its length enclosing the connecting pin 8. Due to the rings 15 made of tough plastic, rubbing or rubbing of the strings 2 on the frame can be virtually completely avoided both when the covering 3 is applied and when it is used later.
  • FIG. 8 also consists of two racket halves corresponding to the halves 6 and 7, which in turn are identical.
  • the racket halves are connected by connecting pins 8a and associated sleeve-like sections 10a, as shown in Fig. 8 for the head halves 1a '.
  • the connecting pin 8a formed in this embodiment as a hollow pin corresponds approximately to the connecting pin 8, possibly having a slightly smaller outer diameter than the connecting pin 8
  • the sleeve-like sections 10a are designed such that they have a partial length 10a 'in the same way as that Connection pins 8a protrude beyond the open side of the channel-like cross-sectional profile formed by the wall 11a and the longitudinal sides 12a and 13a.
  • the connecting pins 8a are each received by a sleeve-like section 10a almost over their entire length, projecting over the long sides 12a and 13a. This results in particularly favorable conditions for the resilience of the tennis racket, since the respective connection point formed by a connecting pin 8a and an associated section 10a has a particularly large outer diameter, which is determined by the outer diameter of the partial length 10a '.
  • the strings 3 forming the strings 2 are guided in this embodiment over the sections 10a or their partial lengths 10a '. Both the connecting pins 8a and the sections 10a are in turn designed such that they also merge into the wall 10a in the region of the long sides 12a and 13a.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)
  • Golf Clubs (AREA)
EP89108928A 1988-05-21 1989-05-18 Ballspielschläger, insbesondere Tennis- oder Squashschläger Expired - Lifetime EP0343507B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3817464 1988-05-21
DE3817464A DE3817464A1 (de) 1988-05-21 1988-05-21 Ballspielschlaeger, insbesondere tennis- oder squashschlaeger

Publications (3)

Publication Number Publication Date
EP0343507A2 EP0343507A2 (de) 1989-11-29
EP0343507A3 EP0343507A3 (en) 1990-09-19
EP0343507B1 true EP0343507B1 (de) 1993-08-04

Family

ID=6354931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108928A Expired - Lifetime EP0343507B1 (de) 1988-05-21 1989-05-18 Ballspielschläger, insbesondere Tennis- oder Squashschläger

Country Status (2)

Country Link
EP (1) EP0343507B1 (enrdf_load_stackoverflow)
DE (2) DE3817464A1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5188359A (en) * 1992-04-08 1993-02-23 Wu Chui Li Drum beat sounding racket
US5935029A (en) * 1997-06-24 1999-08-10 Oddzon, Inc. Sound-producing hockey stick
US5913709A (en) * 1997-06-24 1999-06-22 Oddzon, Inc. Sound-producing golf club
US6071203A (en) * 1998-08-13 2000-06-06 Prince Sports Group, Inc. Two piece sports racquet
US6800239B2 (en) 2002-02-26 2004-10-05 Prince Sports, Inc. Method of manufacturing a two piece sports racquet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1043897B (de) * 1955-12-05 1958-11-13 Press Chemie G M B H Ballschlaeger, insbesondere Federballschlaeger aus Kunststoff
DE1089675B (de) * 1956-10-18 1960-09-22 Barbara Junghans Geb Trost Ballschlaeger aus Kunststoff, insbesondere Federballschlaeger
GB1201649A (en) * 1967-12-20 1970-08-12 Carlton Sports Company Ltd For Improvements in or relating to racket frames
US3998457A (en) * 1974-12-20 1976-12-21 Pepsico, Inc. Tennis racket
DE3408175A1 (de) * 1984-03-06 1985-09-12 Klaus 5100 Aachen Matjasic Verfahren zur herstellung von tennisschlaeger-rahmen

Also Published As

Publication number Publication date
DE3817464A1 (de) 1989-11-23
EP0343507A2 (de) 1989-11-29
EP0343507A3 (en) 1990-09-19
DE58905104D1 (de) 1993-09-09
DE3817464C2 (enrdf_load_stackoverflow) 1990-02-22

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