WO2013136266A1 - Raquette de sport comportant une taille de cordes élargie - Google Patents

Raquette de sport comportant une taille de cordes élargie Download PDF

Info

Publication number
WO2013136266A1
WO2013136266A1 PCT/IB2013/051952 IB2013051952W WO2013136266A1 WO 2013136266 A1 WO2013136266 A1 WO 2013136266A1 IB 2013051952 W IB2013051952 W IB 2013051952W WO 2013136266 A1 WO2013136266 A1 WO 2013136266A1
Authority
WO
WIPO (PCT)
Prior art keywords
strings
head portion
enlarged
sports racquet
racquet
Prior art date
Application number
PCT/IB2013/051952
Other languages
English (en)
Inventor
Mauro Pinaffo
Roberto GAZZARRA
Mauro Pezzato
Original Assignee
Prince Sports, Llc.
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 Prince Sports, Llc. filed Critical Prince Sports, Llc.
Priority to ES13720066T priority Critical patent/ES2875009T3/es
Priority to EP13720066.3A priority patent/EP2825268B1/fr
Publication of WO2013136266A1 publication Critical patent/WO2013136266A1/fr
Priority to HK15106900.9A priority patent/HK1206214A1/xx

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings

Definitions

  • the present invention relates to a sports racquet, particularly for tennis, squash, badminton, racquetball, and similar sports.
  • a sports racquet comprises a handle and a head portion adapted to support a string bed comprising a plurality of longitudinal and transversal strings that intersect to form a plurality of meshes.
  • the head portion is typically strung using standardized designs involving the use of a pre-determined number of strings, depending on the type of racquet being strung.
  • the string bed typically comprises 16 longitudinal strings and 18 or 19 transversal strings, while in racquets intended for more expert users or athletes, the string bed typically comprises 18 longitudinal strings and 19 or 20 transversal strings.
  • the average area of the meshes on the string bed of a traditional racquet is generally around 150 mm .
  • Sports racquets exist that are characterized by a relatively high number of longitudinal and transversal strings, compared to traditional racquets.
  • the average area of the meshes on the string bed may be smaller than the value given above.
  • patent application GB2179863 describes a tennis racquet comprising a string bed with meshes with an average area of 81 mm 2 or smaller.
  • the main aim of the present invention is to provide a sports racquet, particularly for tennis, squash, badminton, racquetball, and other similar sports, that is endowed with improved characteristics.
  • one of the objects of the present invention is to provide a sports racquet that can offer relatively high performance compared to traditional racquets.
  • a further object of the present invention is to provide a sports racquet that is relatively easy to produce industrially, with competitive costs.
  • FIG. 1 shows a schematic front view of the sports racquet, according to the invention, without strings and holes for the strings;
  • figure 2 shows a schematic cross-section view (cross section A-A) of the sports racquet shown in figure 1 ;
  • FIG. 3 shows a schematic front view of the sports racquet, according to the invention
  • figures 4-5 show a perspective view and a cross-section view of an embodiment of the sports racquet, according to the invention
  • FIGS. 6-8 show a perspective view, a cross-section view and a front view of a further embodiment of the sports racquet, according to the invention.
  • FIGS. 9-10 show a perspective view and a cross-section front view of an embodiment of the sports racquet, according to the invention.
  • figure 1 1 shows a schematic view of the dynamics of a shot made with the sports racquet, according to the invention.
  • the sports racquet 1 will be described with reference to a tennis racquet as shown in the aforementioned figures, without in any way limiting the scope of application of the invention, since the intended definition of a sports racquet includes racquets for tennis, squash, badminton, racquetball and similar sports.
  • the racquet 1 comprises a handle 2 and a head portion 3, the latter being adapted to support a string bed 4 (not shown in figures 1-2).
  • the racquet 1 also comprises a throat section 7 adapted to join the head portion 3 to the handle 2.
  • the head portion 3 comprises an outer surface 310 and an inner surface 320, the latter being the surface that delimits the area where the string bed 4 lies.
  • the string bed 4 lies on a reference plane 40 that can be defined as the mid- plane of the volume of space occupied by the string bed itself (figure 2), which comprises the longitudinal axis Y and the transversal axis X of the head portion 3 of the racquet 1.
  • the longitudinal axis Y of the head portion 3 coincides with the main longitudinal axis of the racquet itself, lying on the reference plane 40.
  • the transversal axis X of the head portion 3 coincides with the axis lying on the reference plane 40 perpendicular to the longitudinal axis Y.
  • the transversal axis X intersects the longitudinal axis Y at a point C of the head portion 3, positioned at a distance L/2 from the ends of the head portion, L being the maximum longitudinal dimension of the head portion.
  • the longitudinal axis Y and transversal axis X form a system of four quadrants characterizing the head portion 3, in which quadrants I, II, III and IV are positioned at the top right, bottom right, bottom left and top left apexes of the head portion 3 respectively.
  • the string bed 4 comprises a plurality of longitudinal strings 41 and a plurality of transversal strings 42.
  • the longitudinal strings 41 are arranged in lines substantially parallel to the longitudinal axis Y, while the transversal strings 42 are arranged in lines substantially parallel to the transversal axis X.
  • the strings 41 , 42 are arranged by appropriately stringing the head portion 3 using one or more strings made of synthetic or natural material.
  • the strings 41 , 42 are arranged so that they mutually intersect and form a plurality of meshes 43.
  • the meshes 43 have a substantially rectangular shape. Near the inner surface 320 of the head portion 3, the meshes 43 may however assume a different shape, for example triangular or trapezoidal.
  • the strings 41 , 42 are arranged so that the meshes 43 are enlarged with respect than those found on traditional racquets.
  • the strings 41 , 42 are arranged so that the enlarged meshes 43 have an average area SM of 200 mm or more.
  • the average area media SM of the meshes 43 is given by the following equation:
  • Si is the area of the i-th mesh 43 of the string bed 4 and N is the total number of meshes 43 present on the string bed 4.
  • the "area of a mesh” is defined as the area of a plane surface included between the strings that delimit the mesh and lying, for example, on the reference plane 40 (see figure 3).
  • Experimental tests in the field have shown how the use of a string bed 4 with enlarged meshes 43 (i.e. with an average area greater than 200 mm 2 ) results in an increase in the energy that the racquet can exert on the ball, all other factors being equal.
  • the string bed 4 deforms more markedly than a traditional string bed.
  • This greater deformation reduces the amount of energy dissipated by the ball during the impact with the string bed.
  • the strings 41, 42 are arranged so that the average area SM of the meshes 43 of the string bed 4 on the head portion 3 is between 200 mm and 250 mm , and preferably around 250 mm .
  • the racquet 1 is advantageously intended for expert players or athletes, who have greater skill in controlling shots.
  • the strings 41, 42 are arranged so that the meshes 43 have an average area SM of 600 mm or less.
  • the strings 41, 42 are arranged so that the average area SM of the meshes 43 of the string bed 4 on the head portion 3 is between 300 mm 2 and 600 mm 2 , preferably around 300 mm 2 or 400 mm 2 .
  • Figure 1 1 shows a schematic view of the dynamics 1 1 of a shot made by a player using the sports racquet 1.
  • the ball 100 arrives from an approach direction D ⁇ , touches the string bed at an impact point PIMP and leaves the string bed 4 with an exit direction DOUT-
  • the racquet 1 is characterized by a certain approach angle ⁇ ' of the ball 100 towards the string bed 4 and by a certain exit angle a' of the ball 100 away from the string bed 4.
  • the approach angle ⁇ ' of the ball 100 is defined as the angle between the direction DIN and a horizontal reference axis Dp, substantially parallel to the field of play.
  • the exit angle a' of the ball 100 is defined as the angle between the direction DOUT and a horizontal reference axis Dp, substantially parallel to the field of play.
  • a is typically less than 2°.
  • the strings 41, 42 are preferably arranged so that a is an angle of 5°.
  • enlarged meshes 43 in the string bed 4 advantageously favors the use of strings with a relatively large diameter, so as to better withstand the greater stress generated by the increased deformation of the string bed.
  • the diameter of the strings 41, 42 on the string bed 4 is 1.3 mm or greater.
  • the racquet 1 is characterized by a relatively small number of longitudinal and transversal strings 41 , 42, compared to traditional solutions.
  • the number of longitudinal strings 41 is preferably between 8 and 16, while the number of transversal strings 42 is advantageously between 8 and 18.
  • the head portion 3 can advantageously comprise traditional type holes 30 for the passage of the strings 41 , 42.
  • Inserts of a plastic or rubber material can advantageously be fitted into these holes, for the purpose of protecting the strings and dampening the vibrations generated by the impact of the ball on the string bed 4.
  • the head portion 3 may comprise a plurality of enlarged openings or "ports" 31, 32, 33, 34, each of which is intended for the passage of a pair of strings 410 and/or 420.
  • the strings passing through each of the aforementioned enlarged openings may be adjacent longitudinal strings 410 or transversal strings 420, as shown in the aforementioned figures. In some enlarged openings, however, the passing strings may also be non-adjacent strings, for example a longitudinal string 410 and a transversal string 420.
  • the enlarged openings 31, 32, 33, 34 advantageously have a substantially oval shape but may also have a different configuration, depending on needs.
  • the head portion 3 may also comprise traditional type holes 30 for the passage of the strings 41, 42.
  • the conventional holes 30 may be advantageously positioned at the segments (e.g. the corner segments) of the head portion 3, where, for obvious construction reasons, larger openings cannot be made.
  • the enlarged openings 31, 32, 33, 34 can also be advantageously used as seats for the insertion of plastic parts and/or vibration damping elements or for the positioning of other bodies adapted to change the weight characteristics of the head portion 3, thereby permitting, at the player's discretion, different balancing of the structure.
  • the enlarged openings 31, 32, 33, 34 are placed to correspond with one or more segments 35, 36, 37, 38 of the head portion 3, positioned across two quadrants adjacent to it.
  • the head portion 3 may advantageously comprise:
  • the enlarged openings 31 are adapted to receive pairs of adjacent longitudinal strings 410; and/or
  • - second enlarged openings 32 placed to correspond with a second segment 36 of the head portion 3, positioned across the quadrants II and III. These enlarged openings 32 are also adapted to receive pairs of adjacent longitudinal strings 410; and/or
  • - third and fourth enlarged openings 33, 34 placed to correspond with a third and fourth segment 37, 38 respectively of the head portion 3, positioned across the quadrants I and II and quadrants III and IV.
  • the enlarged openings 33 are adapted to receive pairs of adjacent transversal strings 420.
  • the head portion 3 comprises enlarged openings 31, 32, 33, 34 placed to correspond with segments 35, 36, 37, 38 and traditional holes 30 placed to correspond with the corner segments (not shown) of the head portion 3.
  • the head portion 3 comprises the enlarged openings 31, placed to correspond only with segment 35, and traditional holes 30, placed to correspond with the segments 36, 37, 38 and the corner segments (not shown) of the head portion 3.
  • Further embodiments of the present invention may feature the presence of enlarged openings placed to correspond only with the segments 35, 36, opposite each other with respect to the transversal axis X, or only with segments 37, 38, opposite each other with respect to the longitudinal axis Y.
  • the strings 41, 42 of the string bed 4 are arranged so that the average area SMI of the enlarged meshes 430 formed at least partially by the strings 410 and/or 420 passing through the aforementioned enlarged openings, is 220 mm 2 or greater.
  • the average area SMI is given by the following equation: where Sn is the area of the i-th mesh 430 of the string bed 4 and P is the total number of meshes 430 present on the string bed 4, formed at least partially by strings 410 and/or 420 passing through the enlarged openings 31, 32, 33 and/or 34.
  • the number P is less than the total number N of meshes 43 on the string bed 4.
  • the portions (see dotted areas in figures 8 and 10) of the string bed 4 that are more often struck by the ball have meshes with a larger average area than the rest of the string bed.
  • the sports racquet according to the invention enables the player to significantly increase the power and/or rotation ("spin") imparted to the ball, while at the same time maintaining a high level of control over the shots.
  • spin the power and/or rotation
  • the player can thereby have a noticeably increased level of confidence in his sporting equipment and will be naturally inclined to force his shots more, but without losing control over them (or feeling as if he has lost control).
  • the sports racquet according to the invention can be easily produced industrially using known molding procedures. Industrial production is therefore relatively easy and economical.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Laminated Bodies (AREA)
  • Artificial Filaments (AREA)

Abstract

Raquette de Sport (1) comprenant un manche (2) et une partie tête (3) conçue pour supporter un cordage, (4) située sur un plan de référence. Le cordage de la raquette de sport comprend une pluralité de cordes (43) avec une surface moyenne de 200 mm2 ou plus.
PCT/IB2013/051952 2012-03-14 2013-03-12 Raquette de sport comportant une taille de cordes élargie WO2013136266A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES13720066T ES2875009T3 (es) 2012-03-14 2013-03-12 Raqueta deportiva que tiene tamaño de malla ampliado
EP13720066.3A EP2825268B1 (fr) 2012-03-14 2013-03-12 Raquette de sport comportant une taille de cordes élargie
HK15106900.9A HK1206214A1 (en) 2012-03-14 2015-07-20 Sports racquet having an enlarged mesh size

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000038A ITTV20120038A1 (it) 2012-03-14 2012-03-14 Una racchetta sportiva migliorata
ITTV2012A000038 2012-03-14

Publications (1)

Publication Number Publication Date
WO2013136266A1 true WO2013136266A1 (fr) 2013-09-19

Family

ID=46001544

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/051952 WO2013136266A1 (fr) 2012-03-14 2013-03-12 Raquette de sport comportant une taille de cordes élargie

Country Status (5)

Country Link
EP (1) EP2825268B1 (fr)
ES (1) ES2875009T3 (fr)
HK (1) HK1206214A1 (fr)
IT (1) ITTV20120038A1 (fr)
WO (1) WO2013136266A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409058A2 (fr) * 1977-11-21 1979-06-15 Lacoste Francois Raquette de tennis
EP0186246A1 (fr) * 1984-12-20 1986-07-02 Anne Phillips-Moore Raquette
GB2179863A (en) 1985-09-03 1987-03-18 Nan Lo Kun Racket stringing
EP1797928A1 (fr) * 2005-12-14 2007-06-20 Prince Sports, Inc. Raquette de sport avec des trous pour le cordage et procédé de fabrication d'une telle raquette

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBG20030016A1 (it) * 2003-02-28 2004-09-01 Benetton Group S P A Ora Benetton Trading Usa In Struttura di racchetta sportiva migliorata con aperture sul telaio

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409058A2 (fr) * 1977-11-21 1979-06-15 Lacoste Francois Raquette de tennis
EP0186246A1 (fr) * 1984-12-20 1986-07-02 Anne Phillips-Moore Raquette
GB2179863A (en) 1985-09-03 1987-03-18 Nan Lo Kun Racket stringing
EP1797928A1 (fr) * 2005-12-14 2007-06-20 Prince Sports, Inc. Raquette de sport avec des trous pour le cordage et procédé de fabrication d'une telle raquette

Also Published As

Publication number Publication date
ES2875009T3 (es) 2021-11-08
HK1206214A1 (en) 2016-01-08
EP2825268B1 (fr) 2021-04-28
EP2825268A1 (fr) 2015-01-21
ITTV20120038A1 (it) 2013-09-15

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