EP0106850A1 - Raquette de tennis ou de squash. - Google Patents

Raquette de tennis ou de squash.

Info

Publication number
EP0106850A1
EP0106850A1 EP83900929A EP83900929A EP0106850A1 EP 0106850 A1 EP0106850 A1 EP 0106850A1 EP 83900929 A EP83900929 A EP 83900929A EP 83900929 A EP83900929 A EP 83900929A EP 0106850 A1 EP0106850 A1 EP 0106850A1
Authority
EP
European Patent Office
Prior art keywords
strings
string
frame
racket
racket according
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.)
Granted
Application number
EP83900929A
Other languages
German (de)
English (en)
Other versions
EP0106850B1 (fr
Inventor
Herwig Fischer
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
Priority claimed from DE19823211738 external-priority patent/DE3211738A1/de
Application filed by Individual filed Critical Individual
Priority to AT83900929T priority Critical patent/ATE20575T1/de
Publication of EP0106850A1 publication Critical patent/EP0106850A1/fr
Application granted granted Critical
Publication of EP0106850B1 publication Critical patent/EP0106850B1/fr
Expired legal-status Critical Current

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
    • 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
    • A63B49/022—String guides on frames, e.g. grommets
    • 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
    • A63B51/08—Diagonal stringing
    • 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
    • A63B51/10—Reinforcements for stringing
    • A63B51/11—Intermediate members for the cross-points of the strings
    • 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
    • A63B51/12—Devices arranged in or on the racket for adjusting the tension of the strings
    • 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
    • A63B49/028—Means for achieving greater mobility of the string bed

Definitions

  • the invention relates to a tennis or squash racket with an essentially elliptical frame, a handle connected to it and a string attached to one another within the frame, consisting of strings crossing one another, which have at least one low-friction deflected and tensioned several times in the frame with im include essential parallel string sections.
  • FR-PS 784 057 describes a tennis racket in which a continuous, endless string is also guided over rollers in the frame and in the transition area between the handle and the frame, which is referred to as the heart of the tennis racket, is connected to a chip device, the one Allowing the player to change the total tension.
  • this solution does not allow individual selection of the tension of individual strings and the tension gradient in the racket, it has also only proven to be of limited functionality, since the considerable friction occurring at the crossing points of the strings leads to the tensioning device ⁇ brought pre-tension only in a very slow creep process distributed over the entire string.
  • the invention has for its object to improve the elastic properties of the strings in particular in a non-central ball contact.
  • the strings are preferably at least partially extended beyond the frame area, and the string sections extending beyond the frame area are freely stretchable and connected to the string sections located in the frame area via a low-friction deflection.
  • the strings are preferably extended into the hollow handle and, if necessary, to the bottom thereof.
  • the elongated strings are preferably fastened within the handle in arbitrarily selectable longitudinal positions of an elongated slide which can be moved longitudinally in the handle and which can be moved with the aid of a tensioning device.
  • This tensioning device offers the user the possibility of raising and lowering the total tension of the tennis racket optimized with regard to the tension distribution. It is entirely possible and even intended under certain circumstances that the tensioning process produces differently strong effects in accordance with the different string lengths.
  • the frame is usually designed such that it is capable of absorbing shock losses within certain limits.
  • shock losses which occur in particular in the case of non-central ball contacts, can be absorbed by suspending the slider as such in an elastically or elastically damped manner.
  • the deflection between the string section lying within the frame and the string section extending beyond the frame is in the pulling direction into the interior of the frame surface, that is to say when a string is deflected upon impact, with little friction, in the opposite direction against it braked.
  • This enables a high reduction of impact losses, since the ball is absorbed softly and resiliently by the racket but is not immediately thrown back by the spring springing back immediately.
  • FIG. 1 shows a schematic, partially cut-away top view of an embodiment of a tennis racket according to the invention
  • FIG. 3 is a view of an embodiment of a slider
  • FIG. 3 is a partially cut-away side view from the left in FIG. 3;
  • Fig. Shows another embodiment of the slider
  • FIG. 12 is a partially cut-away partial illustration of the handle of a further embodiment of a tennis racket
  • a tennis racket shown in FIG. 1 comprises a handle 10 and a frame 12.
  • the handle is hollow and has at its free end a plate 14 closing the handle.
  • a string denoted overall by 16, which is indicated in FIG. 1 only by a single string 22 drawn in completely and a further string 24 only partially shown.
  • a longitudinally displaceable slide piece 18 is attached within the hollow handle 10.
  • a clamping bolt 20 is freely rotatable, which enters with thread engagement in the lower end of the slider 18, so that a rotation of the clamping bolt
  • the tennis racket has a diagonal covering.
  • the string 22 is fixed to the frame at point A at the bottom left in FIG. 1 and extends with a first section 22a diagonally across the frame surface to a deflection roller 28. From there, the string 22 is outside the frame 12 to another Deflection roller 30 performed.
  • a subsequent section 22b of the seat 22 runs parallel to the section 22a to a deflection roller 32 (point C).
  • the string 22 runs from the deflection roller 32 through one of the bores 26 of the slide piece 18 within the hollow handle 10 (point D) to a further deflection roller 34.
  • Two further mutually parallel sections 22c, 22d of the string 22 are via deflection rollers 38 guided symmetrically to the string sections 22a, 22b.
  • the end of the string section 22d is fixed at point B on the frame 12.
  • the distance between the parallel stretcher sections 22a and 22b or 22c and 22d corresponds approximately to the radius of a tennis ball.
  • the other strings of the strings 16 are essentially similar to the strings 22.
  • the parallel string sections of the individual strings have essentially the same spacing and accommodate the string sections of other strings between them.
  • a string section 24d of a string 24 extends between the string sections 22c, 22d of the string 22, while the string section 24c, which is parallel to this, extends outside the string sections 22c, 22d.
  • Level E of the frame surface is accelerated.
  • the parallel groups of string sections are represented in FIG. 1 on the one hand by the string sections 22a, 22b and on the other hand by the string sections 22c, 22d, 24c and 24d , arranged in two different levels.
  • the strings are therefore not networked with each other, but run freely past each other.
  • String sections are connected to each other at the crossing points by connecting pieces.
  • a connector is shown in Fig. 13 and designated 110.
  • the connecting piece 110 is formed by two rings 112, 114 which are firmly connected to one another and which are aligned with their central axes perpendicular to one another and each run through with low friction on a string section 70 or 70 '.
  • the strings are networked with one another in the usual way.
  • the strings advantageously have a flattened cross-section, the dimensions of which are reduced in the direction perpendicular to the plane of the frame surface, so that the strings which are networked with one another are pressed against one another at the nodes only with a relatively small force.
  • the flattened strings advantageously comprise two cores of tensile strength which are square or round in cross-section and which are surrounded by a common casing made of friction-reducing material.
  • the shell has a rectangular or elliptical cross section, or consists of two cross-sectional areas each receiving a core, which are interconnected by a web. bound s ind.
  • the string has only one core.
  • a reduction in the junction friction can also be achieved with strings with a round cross-section if the diameter of the strings is reduced overall.
  • the strings should consist of a particularly tensile material, possibly with a friction-reducing coating.
  • the strings in the racket according to the invention for example the string 22, are extended beyond the frame surface into the handle 10. Between points C and D in FIG. 1, the string 22 is guided essentially without contact, so that the entire length A-B can participate in the elastic stretching of the string 22 when a ball hits it.
  • FIG. 3 is an enlarged illustration of the slider 18 already shown in FIG. 1.
  • the slider 18 has a number of bores 26 lying one above the other in the longitudinal direction, which allow the strings to be guided through at different heights.
  • FIG. 4 which shows a further side view of the sliding piece 18, two adjacent bores are shown in the lower region, which allow two different strings to be accommodated at the same height.
  • a threaded bore 44 for receiving the clamping bolt 20 is indicated in the lower region of FIGS. 3 and 4. .
  • Fig. 5 shows another embodiment of a slider, which in this case is designated 18 '.
  • a slider which in this case is designated 18 '.
  • undercut recesses 26 ' are provided in this case on the two opposite strings, which allow the individual strings to be hung in at any height.
  • a threaded bore 44 in turn serves to receive a clamping bolt, not shown.
  • the slider can also consist of elastic material, such as rubber or elastic plastic, so that it has a certain spring and damping effect and can absorb impact losses. Since a deformation in the longitudinal direction of the slider from the bottom up in FIGS. 3 to 5 is added, this effect is particularly evident in the upper region of the sliders shown. This can be used specifically.
  • FIG. 6 shows a schematic cross section through the frame 12.
  • the frame consists of two box profiles 46, 48 connected by a web.
  • the web for receiving a roller 50 is interrupted at the level of the cutting height in FIG. 6.
  • the roller is spherical and has a circumferential groove 52 for guiding a string (not shown).
  • the roller 50 is rotatably arranged on an axle pin 54 which is inserted into opposite bores of the box sections 46, 48, which are not described in more detail.
  • a corresponding bore 56 is provided on the upper side of the box section 46 in FIG. 6 for inserting the axle pin.
  • 7 is a side view of the frame 12 and shows the web 58 and circular recesses 51 for the rollers 50.
  • FIG. 8 shows a partial section through the web 58, not shown in FIG. 6, and in a view of one of the box profiles, which is designated by 60 in FIG. 8.
  • An insert 64 made of slidable material is inserted into a bore 62 of the web 58 and has a bead-shaped rounding 68 in the region of the deflection of a string 66, which allows the string 66 to slide largely without friction.
  • Such a solution results in a similarly low-friction connection between the string section 70 lying within the frame and the string section 72 lying outside the frame. 11 -
  • FIG. 9 shows a similar deflection of a string 66.
  • An insert denoted by 74 again engages in the bore 62, but instead of the rounding 68 has a support 76 which can be folded over in the direction of the arrow and is rounded at its free end and which, when pulled in In the direction of the interior of the frame surface, that is to say upward in FIG. 9 by flipping the movement of the string 66, there is practically no resistance, but in the rest position shown in FIG can be withdrawn while overcoming a certain amount of friction. It is thereby achieved that the string 66 yields slightly when a ball hits the string, but does not return with the same speed and lightness, so that the ball springs back only with a certain loss of impact.
  • FIGS. 10 and 11 A further embodiment of the deflection is illustrated in FIGS. 10 and 11.
  • the deflection is located in the vicinity of the lower apex of the frame 12, so that the string section extends freely from the frame to the slide piece 18.
  • the string 66 extends through a bore 100 of the support 76, which can be pivoted about an axis pin 102 in a region delimited by the web 58 and an inclined surface 104 of the support.
  • the friction increases considerably when the support 76 is pivoted into the position shown in FIG. 10 by a pull on the string section 70.
  • a string 80 according to FIG. 12 can also be used several times in the hollow handle via rollers 82, 84 on the bottom plate - ß ⁇

Abstract

Dans une raquette de tennis ou de squash les cordes (22, 24) sont montées sans frottement sur le cadre (12) et disposées sur la surface du cadre de façon que deux brins parallèles (22c, 22d) de la même corde soient distants d'au moins un diamètre de balle. Entre ces deux brins parallèles sont disposés deux autres brins (24d) qui appartiennent à une autre corde (24). Cette disposition des cordes permet de distribuer la tension consécutive à un coup sur la balle dans des zones qui n'ont pas été en contact avec celle-ci.
EP83900929A 1982-03-30 1983-03-29 Raquette de tennis ou de squash Expired EP0106850B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83900929T ATE20575T1 (de) 1982-03-30 1983-03-29 Tennis- oder squash-schlaeger.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19823211738 DE3211738A1 (de) 1982-03-30 1982-03-30 Tennisschlaeger
DE3211738 1982-03-30
DE8221340U 1982-07-27
DE8221340 1982-07-27

Publications (2)

Publication Number Publication Date
EP0106850A1 true EP0106850A1 (fr) 1984-05-02
EP0106850B1 EP0106850B1 (fr) 1986-07-02

Family

ID=25800787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83900929A Expired EP0106850B1 (fr) 1982-03-30 1983-03-29 Raquette de tennis ou de squash

Country Status (6)

Country Link
US (2) US4595201A (fr)
EP (1) EP0106850B1 (fr)
JP (1) JPS59500628A (fr)
DE (1) DE3364342D1 (fr)
DK (1) DK157530C (fr)
WO (1) WO1983003358A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589906B1 (fr) * 1991-05-21 1995-03-15 FISCHER, Herwig Raquette de tennis, de squash ou autre

Families Citing this family (25)

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Publication number Priority date Publication date Assignee Title
JPS59500628A (ja) * 1982-03-30 1984-04-12 フレキシボツクス　リミテツド メカニカル・シ−ルの改良
USRE34420E (en) * 1986-06-19 1993-10-26 Darling James P Sports racquet
US4786055A (en) * 1986-06-19 1988-11-22 Darling James P Sports racquet
US4930782A (en) * 1987-05-26 1990-06-05 Karakal Corp. Of The Americas String tension transmitting apparatus
JPH01262878A (ja) * 1987-12-03 1989-10-19 Hugo Marrello テニスラケット
GB2251388A (en) * 1991-01-07 1992-07-08 Kuni Tseng A squash racket
FR2687324A1 (fr) * 1992-02-14 1993-08-20 Siguier Max Raquette munie d'un cordage telle qu'une raquette et tennis.
US5257781A (en) * 1993-01-19 1993-11-02 Mitt Usa Corporation Retained rocker string sports racket
US5919104A (en) * 1996-04-26 1999-07-06 Ef Composite Technologies, L.P. Long string racquets, particularly for racquetball
US6132325A (en) * 1997-06-25 2000-10-17 Bertolotti; Fabio P Interlocking string network for sport rackets
US6506134B2 (en) 1997-06-25 2003-01-14 Fabio Paolo Bertolotti Interlocking string network for sports rackets
US6027420A (en) * 1998-10-13 2000-02-22 Soong; Tsai C. Sports racket having a frame with discontinuous boundary
EP1108447A1 (fr) * 1999-12-15 2001-06-20 Tsai Chen Soong Raquette de sport
US6432005B1 (en) * 2001-06-05 2002-08-13 Ryan Lin Racket with lengthened longitudinal strings
US6935975B2 (en) * 2003-04-10 2005-08-30 Wilson Sporting Goods Co. Racquet with channeled handle for receiving racquet string
US6811502B1 (en) * 2003-04-30 2004-11-02 Wilson Sporting Goods Co. Racquet with elongated peripheral main string segments and enlarged sweet spot
US20060211526A1 (en) * 2003-05-12 2006-09-21 Hauptman Madeline M Convertible racket for multiple stringing configurations
US20060009314A1 (en) * 2004-07-12 2006-01-12 Squarehit Sports, Inc. Tennis stroke training apparatus and method
US6955618B1 (en) * 2004-07-22 2005-10-18 Mitchell Herman R Adjustable tension stringed racquet
US20060293127A1 (en) * 2005-06-22 2006-12-28 William Riesser Racket and method of stringing the racket
US20070149327A1 (en) * 2005-12-27 2007-06-28 Varan Cyrus O X-braced tennis racket
EP1857154A1 (fr) * 2006-05-15 2007-11-21 Adolf Brunner Appareil de mesure du cordage d'une raquette de jeu de balle
US8808121B2 (en) 2012-07-24 2014-08-19 Wilson Sporting Goods Co. Racquet configured with fewer cross strings than main strings
US9504882B2 (en) * 2015-04-27 2016-11-29 Gregory Mark Adamczak Interactive tennis racket with split head, flexible spherical joints and strings tension mechanism
US11161017B1 (en) * 2020-04-09 2021-11-02 Cyrus O. Varan Racket with discontinuous frame

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See references of WO8303358A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589906B1 (fr) * 1991-05-21 1995-03-15 FISCHER, Herwig Raquette de tennis, de squash ou autre

Also Published As

Publication number Publication date
WO1983003358A1 (fr) 1983-10-13
US4754968A (en) 1988-07-05
JPS59500628A (ja) 1984-04-12
DK545683D0 (da) 1983-11-29
DK157530B (da) 1990-01-22
US4595201A (en) 1986-06-17
DK545683A (da) 1983-11-29
DE3364342D1 (en) 1986-08-07
DK157530C (da) 1990-06-05
JPH05589B2 (fr) 1993-01-06
EP0106850B1 (fr) 1986-07-02

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