EP0352351A1 - Raquette de tennis, de squash ou de badminton - Google Patents

Raquette de tennis, de squash ou de badminton Download PDF

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Publication number
EP0352351A1
EP0352351A1 EP88112182A EP88112182A EP0352351A1 EP 0352351 A1 EP0352351 A1 EP 0352351A1 EP 88112182 A EP88112182 A EP 88112182A EP 88112182 A EP88112182 A EP 88112182A EP 0352351 A1 EP0352351 A1 EP 0352351A1
Authority
EP
European Patent Office
Prior art keywords
frame
eyelet
band
racket
strings
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.)
Withdrawn
Application number
EP88112182A
Other languages
German (de)
English (en)
Inventor
Hans Zinner
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.)
Tegro Gross- und Einzelhandel fur Tennisartikel GmbH
Original Assignee
Tegro Gross- und Einzelhandel fur Tennisartikel GmbH
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 Tegro Gross- und Einzelhandel fur Tennisartikel GmbH filed Critical Tegro Gross- und Einzelhandel fur Tennisartikel GmbH
Publication of EP0352351A1 publication Critical patent/EP0352351A1/fr
Withdrawn legal-status Critical Current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
    • 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 invention relates to a tennis, squash, badminton racket with a racket head delimited by the frame, in which the stringing plane formed by the strings is arranged and the strings are fastened in that holes running in the stringing plane are arranged and on the outside an eyelet band is placed on the frame, the inwardly facing eyelets each engage in a hole, and the tennis strings are threaded into the eyelets and rest on the eyelet band from the outside.
  • the basic structure of the rackets used for the sports of tennis, squash or badminton is the same. They have a club head connected to a handle, in which the strings are threaded and held and form the stringing plane with which the ball is hit and played during use.
  • the strings are fastened in the racket head by virtue of the fact that bores which are approximately radial and lie in the stringing plane are arranged, in each of which an eyelet having the shape of a hollow cylinder is inserted, which in turn are connected to one another on the outside via a band.
  • the strings are picked up in such a way that the strings are threaded into the eyelets and thereby the respective holes when the eyelet band is placed on them, thereby forming the known lattice structure of the stringing plane.
  • Adjacent strings are connected to each other in the direction and lying on the outside of the loop.
  • the string does not come into direct contact with the frame at any point.
  • the eyelet band runs in one or more parts over the entire circumference of the racket head and so far towards the handle that all strings are gripped via the eyelet band.
  • the racket heart through which the strings running centrally in the direction of the handle are gripped, deflected and guided to the frame.
  • the invention has the Wei Development of the well-known tennis, squash, - badminton rackets made to the task that the impulse generated by the impacting ball is damped much better and the transfer to the arm of the player is reduced as much as possible.
  • a solution is proposed to arrange a layer of elastic material between the eyelet band and the frame.
  • the strings are passed through the eyelets, then they run from the outside in the direction of the eyelet band and i.d. As soon as the next eyelet is deflected again to form the next string parallel to the previous string, there is no direct contact between the string and the frame.
  • By attaching the elastic material between the eyelet band and the frame a relative movement and a change in the distance between the eyelet band and the frame is possible with appropriate force.
  • Corresponding forces are generated by tensile loading of the strings as they come from a ball hitting for a short time.
  • the result is an elastic suspension of the stringing plane formed by the strings.
  • the type of suspension according to the invention results in a higher effective elasticity and a damping of the vibrations generated by the impact shock of the ball when using identical strings.
  • the advantage of the arrangement according to the invention can be seen in several ways: First of all, the force generated by the impacting ball, which puts the strings under tension, is damped and absorbed to a certain extent by the elasticity of the material, which advantageously results in less strain on the joints, muscles and ligaments of the player. There is also a damping of the vibrations of the strings triggered by the impacting ball. Finally, there is no rigid fixing in the area of the frame, so that when the ball strikes the string there is no one-sided stress at this point, the punctual load is reduced, so that tearing or bursting of the string with such hits is hardly conceivable and is possible.
  • the attachment of the elastic layer over a part of the circumference can improve the head of the racket in those zones which are produced by the strings starting with a layer made of elastic material.
  • the elastic layer covers the extends over the entire circumference of the head, on the one hand over those parts of the frame which delimit the club head and, moreover, also in the area of the club heart.
  • the elastic material can be shaped as a band immediately before attaching the eyelet band to the frame as a band with corresponding through openings for the eyelets.
  • it can be molded or glued directly onto the eyelet band or frame during the manufacturing process.
  • the invention comprises both the application of spaced elastic points as well as the insertion of an elastic band running and shaped according to the eyelet band. It is also irrelevant whether the elastic material is made of e.g. Rubber, foamed plastic or other, if the elasticity is given.
  • each eyelet is coaxially surrounded by a cylinder or a truncated cone made of elastic material, so that the tilting movement is possible.
  • the shape of the truncated cone makes it easier to insert when the tip is facing the center of the club head. Due to the tilting movement of the eyelet under load, the part of the string located on the outer region of the frame is almost completely acted upon by the forces and can additionally yield in an elastic manner. In terms of elasticity, the effective length of the tennis string is increased.
  • the eyelets are often attached to an eyelet strap.
  • Another possibility is to provide an arcuate or zigzag shape of the eyelet band in the intermediate area.
  • the relative movement of two eyelets is hereby made even easier and, in addition, the possibility of adapting one and the same eyelet band to different eyelet distances is opened. With a relative distance between two adjacent eyelets, a harmonica-like movement of the eyelet band running between them occurs.
  • Another method which is much more complex in terms of assembly, is to insert the eyelets individually into each of the bores and not to provide a connection to the eyelet band. Then the eyelet band is still in the area of the individual eyelets provided with an elongated hole oriented in the circumferential direction, the eyelet is freely movable in an optimal manner.
  • the stringing plane formed by the strings within the racket head in the direction of the handle is limited by the racket heart, which in turn has bores into which the strings ending there are guided, deflected and passed on to the outside of the frame. Via the eyelet band they become the usually adjacent bore and parallel to it at a distance from the previous course. Due to the deflection in the area of the eyelet band, the strings guided inside the heart of the racket are also elastically fastened, which usually means that double deflection, however, only to a lesser extent, which is why the additional arrangement of a layer of elastic material between the heart of the racket and the frame is proposed in a particularly expedient development of the invention. This results in additional elasticity of the strings and vibration damping.
  • the heart of the racket can still be attached to the frame using screws.
  • the elastic layer to be attached in the distance between the heart of the racket and the frame creates the possibility of relative movement with respect to one another, which is desirable with regard to movements in the direction of the covering plane, but is also possible perpendicular to the covering plane, but is then undesirable.
  • This situation proposed to bend the club heart as well as the frame in the area of their (former) contact surfaces in the same way, so that two mutually parallel curved surfaces are formed, between which the elastic layer is located. In the covering plane, a relative movement is then readily possible when the elastic material is loaded. Movements of the heart of the racket perpendicular to the plane of sanction are then only possible with a small amplitude, depending on the distance between the racket heart and the frame.
  • the convex or concave shape of the racket heart or the associated frame brings about a certain positive locking and a stability and support perpendicular to the covering plane.
  • FIG 1 shows a side view of an eyelet band 1, which in a known manner consists of the actual band 2 and the one shown in FIG Example equidistantly arranged eyelets 3 is constructed, which in turn are designed as a hollow cylinder.
  • the essence of the invention is the attachment of a rubber band 4 parallel to and adjacent to eyelet band 1 in such a way that it is penetrated by the eyelets 3.
  • the width of the rubber band 4 running perpendicular to the plane of the drawing does not have to match that of the eyelet band 1 and can preferably be chosen to be smaller.
  • the eyelets 3 are penetrated by the tennis strings, which are diverted in the direction of the band 2 and are preferably passed on to the adjacent eyelet 3 and rest against it.
  • FIG. 2 shows a schematic representation of eyelet straps 1 in the inserted state.
  • the illustration shows a racket head 5 which is delimited in a manner known per se by a frame 6.
  • the strings 7 located within the racket head 5 and forming the stringing plane are only in a vertical, i.e. Handle direction, drawn in as lines.
  • the middle of the strings 7 are deflected by the bat heart 8 and led to the frame 6.
  • the eyelet band 1 which is shown in FIG. 1, is applied to the outside of the frame 6 described, but not shown here eyelets 3, which pass through the frame 6 due to corresponding holes.
  • the eyelet band 1 prevents a direct contact between the string 7 and the frame 6 in the tensioned state.
  • the rubber band 4 is arranged between the eyelet band 1 and the frame 6.
  • the present representation is schematic in so far as, in the plan view shown, as a rule both eyelet band 1 and rubber band 4 are embedded in a corresponding groove running on the outside of the frame 6 and are therefore normally not recognizable in plan view.
  • the elastic band 4 allows movement of the eyelet band 1 relative to the frame 6.
  • Tensions generated by an impacting ball in the strings 7 can then be partially compensated and absorbed by the existing flexibility of the eyelet band 1, so that the joints, ligaments and muscles of the player are protected and are only burdened and claimed to a lesser extent.
  • the rubber band 4 dampens the oscillations and vibrations of the strings 7, which are also generated by the impacting ball.
  • a further rubber band 9 is additionally arranged between racket heart 8 and frame 6, which allows vibrations and movements of racket heart 8 relative to frame 6. It is attached laterally to the frame 6 with the aid of two screws 10.
  • the rubber bands 4, 9 are used to dampen vibrations and reduce the stress on gels gaps, ligaments and muscles of the player.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)
EP88112182A 1987-07-22 1988-07-28 Raquette de tennis, de squash ou de badminton Withdrawn EP0352351A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873724205 DE3724205A1 (de) 1987-07-22 1987-07-22 Tennis-, squash-, badmintonschlaeger

Publications (1)

Publication Number Publication Date
EP0352351A1 true EP0352351A1 (fr) 1990-01-31

Family

ID=6332086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112182A Withdrawn EP0352351A1 (fr) 1987-07-22 1988-07-28 Raquette de tennis, de squash ou de badminton

Country Status (2)

Country Link
EP (1) EP0352351A1 (fr)
DE (1) DE3724205A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0586832A1 (fr) * 1992-07-16 1994-03-16 Minnesota Mining And Manufacturing Company Raquette avec des éléments d'amortissement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006004850B3 (de) * 2006-02-02 2007-10-04 Head Technology Gmbh Dämpfungsvorrichtung für Ballspielschläger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371941A1 (fr) * 1976-11-26 1978-06-23 Dorestyl Cadre de raquette pour la pratique du tennis ou autres sports et jeux similaires
EP0130622A1 (fr) * 1983-07-05 1985-01-09 PUMA Aktiengesellschaft Rudolf Dassler Sport Epaisseur flexible avec des douilles de protection des cordes pour raquettes, en particulier raquettes de tennis
US4634124A (en) * 1985-01-04 1987-01-06 Amf Incorporated Vibration damped sports racquet
DE8705285U1 (fr) * 1987-04-09 1987-07-09 Adidas Fabrique De Chaussures De Sport S.A.R.L., Landersheim, Fr
DE8634955U1 (fr) * 1986-09-18 1987-09-24 Korte-Jungermann, Hans-Werner, 4156 Willich, De
FR2607397A1 (fr) * 1986-12-02 1988-06-03 Tores Denis Raquette pour jeu de balle avec amortisseur de vibrations

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE904333A (fr) * 1986-03-03 1986-06-30 Tsai Son Kung Raquette amelioree.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371941A1 (fr) * 1976-11-26 1978-06-23 Dorestyl Cadre de raquette pour la pratique du tennis ou autres sports et jeux similaires
EP0130622A1 (fr) * 1983-07-05 1985-01-09 PUMA Aktiengesellschaft Rudolf Dassler Sport Epaisseur flexible avec des douilles de protection des cordes pour raquettes, en particulier raquettes de tennis
US4634124A (en) * 1985-01-04 1987-01-06 Amf Incorporated Vibration damped sports racquet
DE8634955U1 (fr) * 1986-09-18 1987-09-24 Korte-Jungermann, Hans-Werner, 4156 Willich, De
FR2607397A1 (fr) * 1986-12-02 1988-06-03 Tores Denis Raquette pour jeu de balle avec amortisseur de vibrations
DE8705285U1 (fr) * 1987-04-09 1987-07-09 Adidas Fabrique De Chaussures De Sport S.A.R.L., Landersheim, Fr

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0586832A1 (fr) * 1992-07-16 1994-03-16 Minnesota Mining And Manufacturing Company Raquette avec des éléments d'amortissement

Also Published As

Publication number Publication date
DE3724205A1 (de) 1989-01-26

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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