EP0570307B1 - Raquette de tennis ou analogue - Google Patents

Raquette de tennis ou analogue Download PDF

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Publication number
EP0570307B1
EP0570307B1 EP93420191A EP93420191A EP0570307B1 EP 0570307 B1 EP0570307 B1 EP 0570307B1 EP 93420191 A EP93420191 A EP 93420191A EP 93420191 A EP93420191 A EP 93420191A EP 0570307 B1 EP0570307 B1 EP 0570307B1
Authority
EP
European Patent Office
Prior art keywords
branches
tie
bridge
racket according
longitudinal axis
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
EP93420191A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0570307A1 (fr
Inventor
Jacques Fagot
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.)
Skis Rossignol SA
Original Assignee
Skis Rossignol SA
Rossignol SA
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 Skis Rossignol SA, Rossignol SA filed Critical Skis Rossignol SA
Publication of EP0570307A1 publication Critical patent/EP0570307A1/fr
Application granted granted Critical
Publication of EP0570307B1 publication Critical patent/EP0570307B1/fr
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
    • A63B49/03—Frames characterised by throat sections, i.e. sections or elements between the head and the shaft
    • 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 new improved tennis racket or the like, for example for the practice of squash, badmington, etc.
  • a tennis racket comprises a handle aligned in the median longitudinal axis of a flat basket, this basket comprising a frame intended to receive the sieve, connected to the handle by two V-shaped branches defining an open core, delimited by the two branches of the V and by a bridge arranged at the connection of the branches and the bottom of the frame.
  • a racket is described, for example, in document US-A-4,082,274.
  • the core comprises several successive bridges, respectively a main bridge arranged at the connection of the branches and the bottom of the frame, and several parallel intermediate bridges, arranged between the main bridge and the end of the handle. These intermediate bridges are intended to strengthen the handle at the branches to limit bending.
  • the invention relates to a racket of the type in question with an intermediate bridge which has a better effect of damping vibrations upon impact.
  • This improved tennis racket or the like consisting of a handle aligned in the median longitudinal axis of a flat basket, this basket comprising a frame intended to receive strings to form the sieve, connected to the handle by two branches in V defining a core, this core comprising at least two bridges, respectively a main bridge disposed at the connections of each of the two branches with the bottom of the frame, and at least one intermediate bridge disposed between the main bridge and the meeting point of the two branches of the V , is characterized in that the intermediate bridge is inclined relative to the perpendicular to the median longitudinal axis, and in that the attachment points of this intermediate bridge on each of the two branches are asymmetrical.
  • the invention consists in providing the intermediate bridge of the open heart, no longer parallel to the main bridge, but inclined with respect to the latter and with respect to the perpendicular to the median longitudinal axis, so as to that the position of the attachment points of this intermediate bridge with each of the branches forming the heart is asymmetrical relative to this median longitudinal axis of the racket.
  • the vibratory waves which propagate in each of the branches are damped by phase shift when they arrive at the handle of the handle. This results in better comfort and therefore less fatigue for the sportsman.
  • FIG. 1 is a summary schematic perspective representation of a first embodiment of a racket according to the invention, the characteristic core of which is shown in detail in FIG. 2.
  • FIG. 3 is a detailed representation of another embodiment of the invention.
  • FIGS 4 to 7 are schematic representations of other embodiments of the invention.
  • the tennis racket comprises a handle comprising a handle (1), shown here naked, the upper end (2) of which is connected by two V-shaped branches respectively (3) and (4) connected to the basket (5), intended to receive the screen, not shown.
  • the median longitudinal axis (I, I ') of the racket, which passes through the handle (1) defines two half-baskets, respectively right (6) and left (7).
  • the basket (5) is connected to the branches (3,4) forming the heart (8) at the ends (11) and (12) of the main deck (10).
  • the heart (8) substantially comprises in its middle another intermediate bridge (15) inclined at an angle alpha of twenty degrees relative to the perpendicular to the median longitudinal axis (I-I ').
  • the connection point (16) of this intermediate bridge (15) on the branch (4) is closer to the end (12) of the main bridge (10) than is the connection (17) on the branch opposite (3) (see Figure 2).
  • the heart (8) comprises an intermediate bridge also designated by the reference (15), but one of the ends (17) of which is situated substantially in the middle of the branch (3) of the heart , while the other end (16) merges with the point of intersection (12) of the main bridge (10) and the other branch (4) of the heart.
  • the vibratory waves generated by the impact propagate first in the half-baskets (6,7), then from there in the branches (3,4) until the connection (16,17) with the characteristic intermediate bridge (15). Part of the waves then continues to progress in the branches (3,4) and another part borrows the intermediate bridge (15) thus causing a phase shift of these waves.
  • the attachment points (16,17) of the intermediate bridge (15), (forming a fulcrum) on the branches (3,4) of the heart no longer being symmetrical, the rigidity is then different on each of these two branches, which in turn leads to a reduction in amplitudes, therefore a damping of the resonance at the level of the handle (2), which improves the comfort of the user.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)
  • Laminated Bodies (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
EP93420191A 1992-05-14 1993-05-11 Raquette de tennis ou analogue Expired - Lifetime EP0570307B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9206085A FR2691074A1 (fr) 1992-05-14 1992-05-14 Raquette de tennis ou analogue.
FR9206085 1992-05-14

Publications (2)

Publication Number Publication Date
EP0570307A1 EP0570307A1 (fr) 1993-11-18
EP0570307B1 true EP0570307B1 (fr) 1995-04-05

Family

ID=9429945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420191A Expired - Lifetime EP0570307B1 (fr) 1992-05-14 1993-05-11 Raquette de tennis ou analogue

Country Status (5)

Country Link
US (1) US5333858A (enrdf_load_stackoverflow)
EP (1) EP0570307B1 (enrdf_load_stackoverflow)
AT (1) ATE120653T1 (enrdf_load_stackoverflow)
DE (1) DE69300098T2 (enrdf_load_stackoverflow)
FR (1) FR2691074A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7297080B2 (en) * 2001-05-04 2007-11-20 Wilson Sporting Goods Co. Game racquet with separate head and handle portions for reducing vibration
CN102921151A (zh) * 2012-11-27 2013-02-13 石狮市非凡运动器材有限公司 减震强化控球球拍

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082274A (en) * 1976-06-22 1978-04-04 Robert Stevens Tennis racket
FR2592804B1 (fr) * 1986-01-13 1989-04-07 Rossignol Sa Raquette de tennis en materiau stratifie
DE3731529A1 (de) * 1987-09-18 1989-03-30 Kneissl Tirol Sportartikel Ag Ballschlaggeraet, insbesondere tennis- oder squashschlaeger
US4983242A (en) * 1988-11-02 1991-01-08 Roland Reed Tennis racquet having a sandwich construction, vibration-dampening frame
US5005834A (en) * 1990-03-16 1991-04-09 Ferrari Importing Company Multi-frame racket
EP0550121B1 (en) * 1992-01-08 1995-12-20 Chin-San You Racket frame

Also Published As

Publication number Publication date
ATE120653T1 (de) 1995-04-15
DE69300098T2 (de) 1995-08-10
US5333858A (en) 1994-08-02
EP0570307A1 (fr) 1993-11-18
FR2691074A1 (fr) 1993-11-19
DE69300098D1 (de) 1995-05-11
FR2691074B1 (enrdf_load_stackoverflow) 1994-07-13

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