EP2103331A1 - Manche de raquette de tennis, procédé de modification d'une raquette de tennis, ensemble d'éléments de modification d'une raquette de tennis - Google Patents

Manche de raquette de tennis, procédé de modification d'une raquette de tennis, ensemble d'éléments de modification d'une raquette de tennis Download PDF

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Publication number
EP2103331A1
EP2103331A1 EP08169076A EP08169076A EP2103331A1 EP 2103331 A1 EP2103331 A1 EP 2103331A1 EP 08169076 A EP08169076 A EP 08169076A EP 08169076 A EP08169076 A EP 08169076A EP 2103331 A1 EP2103331 A1 EP 2103331A1
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EP
European Patent Office
Prior art keywords
racket
handle
base
stabilisers
shaped
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Withdrawn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
EP08169076A
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German (de)
English (en)
Inventor
Andrzej Waldemar Wegrzyn
Ewa Elzbieta Wegrzyn
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Draw Spz Oo
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Draw Spz Oo
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Filing date
Publication date
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Publication of EP2103331A1 publication Critical patent/EP2103331A1/fr
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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
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/06—Handles
    • A63B60/12—Handles contoured according to the anatomy of the user's hand
    • 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
    • A63B60/08—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
    • 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
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/02—Tennis
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A63B2209/10—Characteristics of used materials with adhesive type surfaces, i.e. hook and loop-type fastener
    • 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
    • A63B60/14—Coverings specially adapted for handles, e.g. sleeves or ribbons
    • 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
    • A63B60/16—Caps; Ferrules
    • 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
    • A63B60/42—Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand
    • 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

  • Object of the invention is a modified handle of a tennis racket, the tennis racket equipped with a modified handle, a method of modification of a regular tennis racket and a set of parts for modification of regular racket.
  • Handles of rackets produced on a mass scale have a universal structure, which is adjusted to a naturally shaped anatomic structure of a palm in case of a hammer-type closed grip. Such grip used in tennis results in frequent contusions of the wrist.
  • open grips of "v"-type have a drawback of being weaker and impairing tendons fixed in epicondyles of humerus in case of backhander strokes.
  • a natural solution to the problem is a two-handed grip both in case of a backhander and in a forehand stroke.
  • players that preferred such a play style as Pancho Segura and Monika Seles.
  • the contemporary tennis is dominated by players employing a one-hand forehand and backhand, although a play style based on the two-handed backhand and one-hand forehand was granted an equal status.
  • a handle of the racket is equipped with a two-element stabilizer located at the butt-cap of the racket.
  • the handle is equipped additionally with stabilizers located on a handle of the racket, but only in its middle zone.
  • a handle of the racket is equipped with stabilizers of a grip located in three zones of the handle i.e. front stabilizers of the racket handle, middle stabilizers of the racket handle and a stabilizer of the racket base (butt-cup).
  • Object of the invention is a modified handle of a tennis racket, characterised in that it is equipped with an ergonomic stabilizer of a grip at the base (butt-cap), composed of two separate elements, preferably ball-shaped, anchored separately directly in the base (butt-cap) or in two canals of the frame running in the handle of the racket.
  • Object of the invention is also a tennis racket characterised in that it is equipped with a modified handle of the racket defined above.
  • Object of the invention is also a method of modification of a regular tennis racket, characterised in that a stabilizer composed of two separate elements, preferably ball-shaped, is fixed on the racket butt-cap, the elements preferably being screwed, each one separately, in canals of the racket frame profile, preferably using anchor screws, or being mounted directly in the racket handle.
  • the stabilizer elements Preferably, during fastening of the stabilizer elements, their shape is modelled with a glue paste, preferably with a thermosetting glue paste.
  • a glue paste preferably a thermosetting glue paste.
  • Object of the invention is also a set of parts for modification of a regular tennis racket, characterised in that it includes a stabilizer of the base (butt-cap) composed of two separate ball-shaped elements.
  • Object of the invention is also a modified handle of a tennis racket, characterised in that it is equipped with ergonomic stabilizers of a grip, on walls of the handle and at the base (butt-cap), stabilizers located on the handle walls having a form of flattened shaped elements of a flat elliptic base and being located only in the middle zone of the handle, and the stabilizer of the racket base (butt-cap) being composed of two separate elements, preferably ball-shaped, anchored separately directly in the racket butt-cap or in two canals of the frame running in the racket handle.
  • stabilizers located on walls of the handle have an elliptic, semicircular or boat-shaped longitudinal cross section.
  • Preferably stabilizers are equipped with furrows for fingers.
  • stabilizers in the form of flattened shaped elements are located on two opposite walls of a racket handle determined by any of axes of the racket handle.
  • Object of the invention is also a tennis racket characterised in that it is equipped with a modified handle of the racket defined above.
  • Object of the invention is also a method of modification a regular tennis racket, characterised in that stabilizers in the form of flattened shaped elements of a flat elliptic base are mounted on walls of a handle of a regular tennis racket in the middle of the handle, and a stabilizer composed of two separate elements, preferably ball-shaped is mounted at the base (butt-cap) of the racket, and stabilizers in the form of flattened shaped elements are preferably screwed, riveted, glued or these techniques are combined, and the stabilizer of the butt-cap in the form of two elements preferably is screwed in canals of the racket frame profile, preferably using anchor screws, or are mounted directly in a handle of a racket, and each of the elements of the stabilizer of the butt-cap is mounted separately.
  • the stabilizers Preferably, during fixing the stabilizers, their shape is modelled with a glue paste, preferably with a thermosetting glue paste.
  • a glue paste preferably a thermosetting glue paste.
  • Object of the invention is also a set of parts for modification of a regular tennis racket, characterised in that it includes a two-element stabilizer of the base (butt-cap) composed of two ball-shaped elements, and stabilizers of a grip in a form of flattened shaped elements of flat elliptic base having an elliptic 10, semicircular 11 or boat-shaped 12 longitudinal cross section .
  • Object of the invention is also a modified handle of the tennis racket, characterised in that it is equipped with ergonomic stabilizers of a grip in the three zones: the front zone, the middle zone and the butt-cap zone, the front and middle stabilizers located on the racket handle walls having a form of flattened shaped elements of a flat elliptic base and the stabilizer of the racket base (butt-cap) being of oval shape and having thickened ending compared to the butt-cap dimension, and two stabilizers located next to each other on the same wall of the racket handle are optionally combined into one element.
  • stabilizers of the front and middle zone or combined stabilizers are located one by one or pairwise, symmetrically on opposite walls of the racket handle or asymmetrically on different walls of the racket handle .
  • stabilizers of the front zone, middle zone and combined stabilizers have an elliptic 10, semicircular 11 or boat-shaped 12 longitudinal cross section .
  • Preferably stabilizers are equipped with furrows for fingers.
  • the stabilizer of the racket base is ball-shaped 17, lenghwise ball-shaped 18 or heart-shaped 19.
  • the stabilizer of the butt-cap is composed of two separate elements, preferably ball-shaped, anchored separately directly in the racket base (butt-cap) or in two canals of the frame running in the racket handle.
  • front and middle stabilizers or combined stabilizers are located on two opposite walls of the racket handle determined by any axis of the racket handle.
  • the stabilizer of the racket butt-cap has a flattened shape and is located at the base (butt-cap) in conformance with any axis of the racket handle, preferably in position 18a, 18b, 18c or 18d.
  • Object of the invention is also a tennis racket characterised in that it is equipped with the modified handle of the racket defined above.
  • Object of the invention is also a method of modification of a regular tennis racket, characterised in that the front and central stabilizers, or the front and central stabilizers combined into one element, in the form of flattened shaped elements of a flat elliptic base are mounted on walls of the handle of a regular tennis racket, and a stabilizer which has an oval shape and has a thickened ending compared to a dimension of the base (butt-cap) or stabilizer composed of two separate elements, preferably ball-shaped is mounted at the butt-cap of the racket and the stabilizers in the form of flattened shaped elements are preferably screwed, riveted, glued or these techniques are combined and the stabilizer of the butt-cap preferably is screwed in channels of the racket frame profile, preferably using anchor screws, or is mounted directly in a handle of a racket and in case when the stabilizer of the butt-cap is a two-element stabilizer, each of them is mounted separately.
  • a glue paste preferably with a thermosetting glue paste.
  • free spaces of the handle are filled in with a glue paste, preferably with a thermosetting glue paste.
  • Object of the invention is also a set of parts for modification a regular tennis racket, characterised in that it includes a one-element stabilizer of the base (butt-cap), which has an oval shape, a thickened ending compared to a dimension of the racket butt-cap and preferably is ball-shaped 17, lengthwise ball-shaped 18 or heart-shaped 19, or a two-element stabilizer of the butt-cap composed of two ball-shaped elements, and furthermore includes either separately front and middle stabilizers of a grip in the form of flattened shaped elements of a flat elliptic base having elliptic 10, semicircular 11 or boat-shaped 12 longitudinal cross section, or front and middle stabilizers 1a combined in pairs into one element.
  • a one-element stabilizer of the base butt-cap
  • butt-cap which has an oval shape, a thickened ending compared to a dimension of the racket butt-cap and preferably is ball-shaped 17, lengthwise ball-shaped 18 or heart-shaped 19, or a
  • Object of the invention in various embodiments is illustrated on appended drawings, on which the front stabilizer of a grip of the racket handle 1, central stabilizer of a grip of the racket handle 2, and stabilizer of a grip of the racket base (butt-cap) 3 are designated.
  • Fig. 2 a method of integration of the front and central stabilizer (combined stabilizer 1 a) is presented.
  • stabilizers are ergonomic as regards their shape is to be understood in such a way that their shapes make it possible to grip the racket comfortably with palms.
  • the shapes are determined by a shape of a closed palm when holding a tennis racket.
  • Griping a racket with a palm at a handle is different from griping at its ending.
  • stabilizers located on a handle of the racket should have a flat base adapted to a surface of a handle, and should be gently convex (flattened) from a side of a palm griping them e.g., they can have an elliptic 10, semicircular 11 or boat-shaped 12 longitudinal cross section. They should not include edges to avoid injuries.
  • the employed shaped elements acting as stabilizers are not sufficiently smooth and have a shape e.g., of a polyhedron, their shape can be modelled during fastening, and thus one can shape the handle, by means of a glue paste, preferably a thermosetting paste. Moreover, free spaces are filled using the same materials.
  • Front stabilizers of a grip of the racket 1 are shaped elements made of workable materials, i.e. from plastics or metal. Their role is to force a hooked grip ( fig. 3 ), which protects against contusion of the elbow. A size and shape of that element should be customized to a player's hand. For most tennis players it will be a boat-shaped element of length 2-6 cm, width 0.5 -1.5 cm and height 0,5 - 1,5 cm.
  • These stabilizers can constitute an integral part of commercially manufactured rackets, i.e. they can be a plastic cast or a metal form of the racket handle .
  • Stabilization of a hooked grip can also be additionally effected by suitable profiling of thickness of wrapping of the racket handle or by sealing profiling elements in the wrapping.
  • the middle stabilizer of a grip of the racket 2 is composed of shaped elements made of workable material. Their role is to force a hooked grip on the index finger and the thumb, which protects against contusion of the elbow. A size and shape of that element should be customized to a player's palm. For most tennis players it will be a boat-shaped element of length 2-6 cm, width 0.5-1.5 cm and height 0.5-1.5 cm.
  • These stabilizers may constitute an integral part of commercially manufactured rackets, i.e. they may be a cast from plastic or a metal mould of the racket handle. They may also be a separate element fastened to side walls of the racket handle by means of screwing, riveting or gluing, or using combined techniques. Stabilizing of the hooked grip can also be effected through suitable profiling of thickness of the wrapping of the racket handle or through sealing profiling elements in the wrapping.
  • a distance between individual stabilizers should be customized taking into account an anatomic structure of a palm and a play style. However, one can accept as a rule that a distance between the middle stabilizer and the butt-cap stabilizer should make it possible to make a hammer-type grip.
  • Combining front and central stabilizers into one element 1a consists in combining function of a stabilizing grip of a leading hand (i.e. a right hand - in case of a right-handed player) with a function of a stabilizing grip of a complementary hand (i.e. a left hand - in case of a right-handed player). It applies in particular, when a player uses two-handed grip to a backhander and a one-handed grip to a forehand stroke.
  • the combined stabilizer performs at the same time functions of the front and central stabilizers, thus its shape and dimensions are related to features of individual front and central stabilizers.
  • the stabilizer of a grip of the racket butt-cap 3 is an element having oval, soft shape e.g., it is a ball-shaped 17, lenghtwise ball-shaped 18 or heart-shaped 19 element fastened to the racket base (butt-cap), made of a mechanically or heat-treatable material.
  • These elements can also be solids of oval, cone-shaped, ellipsoidal, conical-ellipsoidal, paraboloidal shape or of other shapes of that type. A role of these solids is to shape a grip of a leading hand of a tennis player to reduce work of extensor muscles of the wrist and fingers having an attachment in the lateral epicondyle of humerus.
  • a stabilizer of the butt-cap plays a role of fitting (a support) of a leading hand to the middle stabilizer.
  • a size of the stabilizer should be adjusted to a palm of a player, however for most tennis players these will be ball-shaped elements of diameter 2-4 cm fastened to the butt-cap and suitably cut off.
  • These stabilizers may also constitute an integral part of commercially manufactured rackets, i.e. the may be a plastic cast or a metal mould of an enlarged butt-cap of the racket handle.
  • the handle of the racket is equipped with a two-element stabilizer of a grip of the butt-cap. It is a stabilizer like that described above, but it consists of two separate elements anchored separately in channels of the racket frame running along the length of the racket handle, and in case of rackets, frame profiles of which end at a beginning of the handle and behind that there is a homogeneous space, the anchoring is made in the material of the racket ending or in a metal profile of the handle by means of pouring a hardening paste - as a filling - to the racket ending.
  • the matter of novelty of the invention consists in utilizing a phenomenon of friction between touching elements for damping racket vibration.
  • Two elements stabilizing grip of the butt-cap are located on the outside and have a contact with the entire palm of a hand, and at the same time the vibration damping is effected through a friction zone 21 located between two touching elements of a stabilizer of a grip of the butt-cap.
  • Each wave flowing along the racket length is split in the end part of the racket and flows farther in two elements that stabilize grip of the racket butt-cap. Because of different stresses arising in the butt-cap of the racket, waves flowing in stabilizers of the butt-cap have mutually shifted phase and length, which at a contact of the two elements of stabilizer results in friction between them, which in turn damps the vibrations.
  • a glue paste 22 for modelling a shape of the stabilizer may be put directly on walls of the racket handle, reinforced with screws 23 or fastened with profiles made of hard plastic 24 or other analogous material as shown on Fig. 9.
  • Stabilizers of a grip of the butt-cap may be screwed down in channels of the racket frame profile e.g., on anchor screws or directly in the racket handle.
  • a thermosetting paste 22 fed e.g., by means of so-called Glutomatic should be used.
  • the proposed solutions according to the invention are aimed at a change of a universal racket handle into a handle, which prompts to a safe two-handed play style.
  • the solution helps to eliminate a mistake connected with a grip, which also reduces a risk of contusions. From a point of view of safety of an elbow, one should distinguish between three main play styles:
  • a forehand stroke is two-handed without change in a hand arrangement compared with a backhander stroke.
  • the first method when the left hand performs a radical pulling movement while maintaining hooked arrangement of fingers, and the right hand takes advantage of a lever effect in relation to the left hand while utilizing also pulling attachment supported on the thumb and the index finger.
  • the second method consists in a conventional forehand stroke with a gentle utilizing of the left hand to reinforce a grip of the racket.
  • a symmetric arrangement of the front stabilizer 13 and the butt-cap stabilizer in position 18a on an axis k-k as in case of conventional continental grip is the most universal solution.
  • the consequence is a parallel arrangement of forearms and utilizing of a hooked grip from one side i.e. without a hooked grip of the thumb.
  • Such a grip is used in a conventional tennis, an example being a two-hand backhander of Andre Agassi.
  • Such type of a grip has its advantages, as it involves tricepses to block the elbow joint, thus loosening tendons of forearm fixed in epicondyles of humerus.
  • that grip results in a risk of other contusions i.e.
  • a grip may be used by advanced players because of a distance between a player and a ball and a necessity of taking a precise position to perform a stroke.
  • the better solution is to use a hooked grip of all fingers of a palm, including also the thumb.
  • the solution consists additionally in an increase in a circumference of the racket handle in the middle part of the racket called a central stabilizer of a grip of the racket 2 to improve forehand strokes.
  • the central stabilizer makes it possible to utilize better extensors of the index finger and the thumb, which are safe, because do not have attachments in the epicondyle of the humerus.
  • a forehand stroke also two techniques are possible. The first one takes an advantage of a hooked grip based on the index finger and the thumb.
  • stabilizers located symmetrically on an axis w-w 14 can play a role of separating the index finger from the remaining fingers, which is often practiced among tennis players. Such separation of fingers improves reliability and efficacy of strokes through a better racket control.
  • the resulting whip effect ensures higher safety of tendons fastened in epicondyles of arm.
  • the solution consists in employing only the central stabilizer of a grip of the racket 2 and/ or the stabilizer of a grip of the racket base (butt-cap) 3 without necessity of using the front stabilizer of a grip of the racket 1.
  • a purpose of stabilizers is to loosen a grip and to arrange the racket precisely in relation to the coming ball, because "impure" strokes at strongly tense muscles of forearm result in contusions.
  • the problem cannot be fully overcome, as the most players are accustomed to play with a different backhander grip and a different forehand grip.
  • the solution consists in balancing efficacy in a play and safety for player's individual preferences (e.g.: muscles strength, habits). Individual manipulation of a size and position of individual stabilizers can help to solve that question.
  • stabilizers - individual and/or arranged in sets - located on walls of the racket as 15 or 16 and the system of the butt-cap as in 18c or 18d may be used.
  • advantages of the racket can be utilized in a similar manner as in case of one-hand forehand strokes, i.e. by utilizing the index finger supported on the central stabilizer to improve precision of the impact or through griping the stabilizer of the racket butt-cap and utilizing the whip effect to increase rotation and strength of the impact.
  • a one-hand backhand it is possible to utilize extensor muscles of the thumb and of the index finger, which do not have attachments in the lateral epicondyle of humerus.
  • the racket of the new structure has greater weight and balance (centre of gravity) shifted to the handle, which reduces vibrations of the racket transferred to the hand, thus protecting from injuries. Vibrations are also reduced by a two-element stabilizer of a grip of the butt-cap through utilizing the friction effect between these two elements.
  • friction zone 21 damping vibrations of the racket is shown. Furthermore, shifting of balance of the racket in the direction of the handle improves manoeuvrability, which reduces stresses of muscles of forearm, which in turn protects from injuries of tendons.
  • Fig. 1 stabilizers 1, 2 and 3 located in three zones of the racket handle are shown in horizontal and vertical projections
  • Fig. 2 integration of front and central stabilizers located on a handle of the racket is shown
  • Fig. 4 shapes of stabilizers: elliptic 10, semicircular 11 and boat-shaped 12 are shown
  • Fig. 5 furrows for fingers on stabilizers located on a handle of the racket are shown
  • Fig. 6 designation of walls of the racket and position of front and middle stabilizers 13, 14, 15 and 16 in cross section (view from a side of the butt-cap) is shown
  • a hooked grip is shown and the stabilizer of a grip 1, the metacarpal bone 4, the proximal phalanx 5, the medial phalanx (farther) 6, the distal phalanx (farther) 7 and the phalanx-metacarpal joint 8 as well as a handle of the racket in the cross section 9 are shown.
  • Fig. 9 the handle of the racket with one stabilizer and with two-element stabilizer of the racket butt-cap prepared by the method according to the invention - depicted in Fig. 9 - is shown.
  • Two central stabilizers in a form of shaped elements made of plastic of elliptic shape are screwed with screws in the middle part of the racket handle, at the same time applying a layer of a glue paste i.e. a typical thermosetting resin, on a flat base of elliptic stabilizers and on a surface of the racket handle.
  • the stabilizers are mounted symmetrically on opposite walls of the racket handle.
  • Two ball-shaped elements of the racket butt-cap are mounted, each of them separately, with screws (with wall plugs) in channels of the racket frame profile (fig. 9).
  • the remaining free spaces and edges, which can cause superficial injuries are filled in with a glue paste, e.g., a thermosetting paste.
  • shaped elements made of plastic 24 were screwed on a handle of the racket.
  • the stabilizers on the racket handle were modelled with a use of glue paste. Space inside the shaped element as well as outside were filled in with the paste, to obtain an elliptic shape of stabilizers.
  • stabilizers were prepared by screwing three screws constituting an elliptic outline of the stabilizer on a wall of the racket handle and the space between them were filled in with the glue paste i.e. the thermosetting paste (fig. 9).
  • An elliptic stabilizer of the racket handle was obtained through modelling it directly on the handle.
  • the invention comprising the above described elements is suitable for commercial applications.
  • Mass production of rackets including the above described elements will enable tennis players to return into tennis-courts after contusions called "a tennis player's elbow". Because of its anti-injuries character, the new type of the racket will have first of all application in rehabilitation and recreation, but also it will ensure successes of most professional players. It will have particular application in training of tennis grips and in long training cycles at high loads.
  • the racket will protect from injuries through loosening of a grip and precise arrangement (adjusting) of a palm to a racket handle. Furthermore, the racket makes it possible to master symmetric techniques of strokes i.e. two-handed forehand and backhand, which is of importance for both young and elder tennis players.
  • Elements presented here may be an integral part of commercially manufactured rackets or elements assembled separately in the traditional rackets.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Physiology (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
EP08169076A 2008-03-21 2008-11-13 Manche de raquette de tennis, procédé de modification d'une raquette de tennis, ensemble d'éléments de modification d'une raquette de tennis Withdrawn EP2103331A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL384763A PL384763A1 (pl) 2008-03-21 2008-03-21 Zmodyfikowana rączka rakiety tenisowej, rakieta tenisowa wyposażona w zmodyfikowaną rączkę, sposób adaptacji zwykłej rakiety tenisowej i zestaw elementów do adaptacji zwykłej rakiety

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PL38476308 Previously-Filed-Application 2008-11-13

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EP2103331A1 true EP2103331A1 (fr) 2009-09-23

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EP08169076A Withdrawn EP2103331A1 (fr) 2008-03-21 2008-11-13 Manche de raquette de tennis, procédé de modification d'une raquette de tennis, ensemble d'éléments de modification d'une raquette de tennis

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PL (1) PL384763A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2401042B1 (fr) * 2009-02-04 2013-07-17 Christiaan Petrus Vienings Article de sport
JP2016106842A (ja) * 2014-12-05 2016-06-20 勇 小谷 ラケット用グリップ断面寸法調整部材及びラケット

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5964672A (en) * 1998-01-20 1999-10-12 Bianchi; Jean-Claude Vibration damper
WO2004033053A1 (fr) * 2002-10-08 2004-04-22 Szelenyi Attila Manche de raquette et raquette equipee d'un tel manche
US6916260B1 (en) * 2003-07-11 2005-07-12 Joyce Poteet Tennis racket grip device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5964672A (en) * 1998-01-20 1999-10-12 Bianchi; Jean-Claude Vibration damper
WO2004033053A1 (fr) * 2002-10-08 2004-04-22 Szelenyi Attila Manche de raquette et raquette equipee d'un tel manche
US6916260B1 (en) * 2003-07-11 2005-07-12 Joyce Poteet Tennis racket grip device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2401042B1 (fr) * 2009-02-04 2013-07-17 Christiaan Petrus Vienings Article de sport
JP2016106842A (ja) * 2014-12-05 2016-06-20 勇 小谷 ラケット用グリップ断面寸法調整部材及びラケット

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