EP1097730A1 - Schläger für Ballspiele - Google Patents
Schläger für Ballspiele Download PDFInfo
- Publication number
- EP1097730A1 EP1097730A1 EP00123052A EP00123052A EP1097730A1 EP 1097730 A1 EP1097730 A1 EP 1097730A1 EP 00123052 A EP00123052 A EP 00123052A EP 00123052 A EP00123052 A EP 00123052A EP 1097730 A1 EP1097730 A1 EP 1097730A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- racket
- clock
- profile
- area
- cross
- 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
Links
Images
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
-
- 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
- A63B49/00—Stringed rackets, e.g. for tennis
- A63B49/02—Frames
- A63B49/10—Frames made of non-metallic materials, other than wood
-
- 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
- A63B49/12—Frames made of metal
-
- 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
- A63B2049/0201—Frames with defined head dimensions
-
- 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
- A63B2049/0211—Frames with variable thickness of the head in a direction perpendicular to the string plane
-
- 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
- A63B2049/0217—Frames with variable thickness of the head in the string plane
-
- 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
Definitions
- the present invention relates to a sports racket or a racket for Ball games, especially a tennis racket with a tenter or Racket head to hold the covering, one on the stenter subsequent heart area and a handle or handle section.
- DE-A-34 34 956 and US-A-4 664 380 propose a racket in which the resonance frequency of the strung racket attached to the handle corresponds approximately to the length of time in which the ball with the covering is in contact.
- the natural frequency of the racket with the Excitation frequency of the ball essentially match.
- the racket is in has the greatest height in its heart zone and extends to the handle as well also tapered towards the club head, i.e. in both directions of the longitudinal axis, preferably the greatest height in either side of the heart zone extending area is constant.
- the cross section of the stenter forming profile bar is essentially rectangular with changing height.
- DE-A-39 10 871 shows a racket for ball games with a hollow tubular frame that forms a head, neck and shaft and carries a handle.
- the frame has a perpendicular to the fabric plane
- a cross-sectional height that goes from the bottom of the neck to the end of the head increases uniformly, so that the rigidity of the frame with increasing distance from the handle grows.
- This arrangement where the frame is most flexible at the top of the handle, is supposed to decrease the angle to which the covering level is and should be deflected when hitting a ball have a shock-absorbing effect.
- US-A-5 810 683 describes a sports racket, particularly one Tennis racket, with a changing around the circumference of the stenter Cross-sectional shape.
- the one that extends from the tip of the club head major part of the circumference of the stenter has an aerodynamic, i.e. a substantially oval cross-section.
- Which is from the handle section extending part of the frame has a rectangular cross-sectional profile, wherein the two profiles on each side through a transition section are fluidly connected to each other.
- the transition section between the Both cross-sectional profiles are located near the heart area and extends in a range of at most 15% of the total racket length.
- the present invention is based on the object improved racket, especially an improved tennis racket to provide low weight with high rigidity. This object is achieved with the features of the claims.
- the invention is based on the basic idea, depending on the stresses occurring in the respective frame position of the racket, such as e.g. Bending and torsion for the relevant type of stress provide optimal frame cross-sectional profiles.
- stresses occurring in the respective frame position of the racket such as e.g. Bending and torsion for the relevant type of stress provide optimal frame cross-sectional profiles.
- a suitable cross-sectional shape for torsional stresses the frame profile is a circular cross-section while for bending stresses for example a substantially rectangular cross-sectional profile for the Racket frame is suitable.
- the respective frame position in the racket head reaches the invention Racket with low weight, e.g. less than 200g for one Tennis racket, optimal strength and manageability. Furthermore, it is preferred, also in the heart area or in the shaft area of the invention Racket a cross-sectional shape optimally adapted to the type of stress the frame profile at the respective position. This allows the Manageability and the playing properties of the racket according to the invention be further increased.
- the racket at the head end may be preferable to narrow the racket at the head end, i.e. to train with a lower overall height.
- Corresponding a particularly preferred embodiment are in the heart area of the Two such bump-like stiffening elements are provided on each side of the racket, to provide a particularly stiff and light racket.
- FIGs 1 and 2 is a conventional tennis racket 2 in front and Side view shown.
- This tennis racket 2 essentially has one oval club head 4, a heart area 6 and a grip section 8. in the The head area 4 of the racket 2 is usually a recess 10 for receiving a wear frame or headgear, not shown, is provided.
- the Heart area 6 of the racket is essentially the connection area between the head region 4 and the grip section 8 and has, for example, as shown in Fig. 1, an opening 12. This opening is not mandatory required. However, if it is formed, it is separated by two side sections 14 and 16 and a connecting section or a bridge 18 in the head region 4 the racket 2 formed. For strength reasons, can be between the two Side areas 14 and 16 of the heart area 6 a second connecting element 20 may be provided.
- the conventional tennis racket 2 shown in Figures 1 and 2 is off a shape profile with substantially constant dimensions, apart from the recess 10, formed.
- the cross-sectional shape or the Cross-sectional dimensions of the profile forming the racket frame are from Side area 14 of the heart area 6 around the head area 4 and to Side region 16 is substantially constant and oval or rectangular. Only in The receiving area of the connecting element 18 has the racket 2 reinforced Cross-sectional dimensions.
- a dial of a conventional watch drawn in order below the racket according to the invention more easily with reference to the respective circumferential position on the head area 4 of the racket in connection with to be able to describe the corresponding time. For example, corresponds thus twelve o'clock an extreme head end 22 of the one shown in FIG. 1 Racket.
- FIG Figures 3 to 5 A preferred embodiment of a racket 30 according to the invention is shown in FIG Figures 3 to 5 shown.
- the racket 30 according to the invention corresponds in FIG its basic structure is essentially a conventional tennis racket, such as described above with reference to Figures 1 and 2.
- the means that the racket 30 according to the invention also has a head region 32, has a heart area 34 and a handle portion.
- the heart area 34 of the Racket 30 according to the invention can also be used contrary to that shown in FIG. 3 Embodiment without opening 38, i.e. the handle section can run closed up to the head area 32.
- Even the connecting element or the bridge 40 between the handle-side end sections 42 of the head region 32 is optional. Consequently, the heart area 34 can only be made from extensions 46 of the handle-side ends 42 of the head region 32, which extend towards the handle section extend, be formed.
- the racket 30 is the The basic idea is that the profile forming the frame corresponds to the occurring at the individual frame positions (main) Strains has different cross-sectional shapes to the have moments of resistance adapted to the respective types of stress.
- the term "cross section" in the sense of the present invention refers to a Section through the frame profile of the racket along a plane that is in the essentially normal or perpendicular to a tangential plane on a Outer surface of the frame at the interface and essentially normal or perpendicular to a plane parallel to the stringing plane of the racket extends.
- the enlarged partial front view shown in Figure 3 Racket 30 of this embodiment of the invention shows only one Half of a head area 32 and a heart area 34.
- the other, not shown racket half is preferably symmetrical.
- the in Figure 3 cut lines a-a, b-b, c-c, etc. through the cross section of the racket profile are essentially at a distance of about 30 mm arranged.
- the cuts n-n to are only in the heart area 34 of the racket t-t at other intervals according to the maximum occurring there Stresses arranged.
- the cross-sectional profiles along the individual Sections of the preferred embodiment of racket 30 are in the figures 4a to 4t.
- the height of the racket frame according to the invention is in the preferred embodiment preferably continuously between 20 and 35 mm, preferably 28.5 mm.
- a rather rectangular cross-sectional profile with a Axis ratio in the range of 1.93 to 1.61 provided in areas that are subject to particularly high bending stress Racket in the range of about two o'clock to four o'clock, i.e. in the range between the sections g-g and l-l.
- a rather rectangular cross-sectional profile with a Axis ratio in the range of 1.93 to 1.61 provided in areas that are subject to particularly high bending stress Racket in the range of about two o'clock to four o'clock, i.e. in the range between the sections g-g and l-l.
- a rather rectangular cross-sectional profile with a Axis ratio in the range of 1.93 to 1.61 provided.
- Torsional stresses are essentially circular Cross-sectional profile particularly well suited.
- Such a cross-sectional profile is for example in the range from about half past four to half past seven, i.e. in the Find the range of cuts n-n, o-o
- the racket 30 according to the invention described above represents a particularly preferred embodiment of the present invention, this is however, not to those specified in FIGS. 4a to 4t and FIG. 5 Axis ratios and dimensions limited. Rather, in the field of present invention these dimensions and ratios depending on the application vary. Such is the racket 30 described in FIGS. 3 to 5 for example a tennis racket for which these dimensions and axis relationships are particularly preferred. However, the responsible specialist is without further be clear that, for example, for a squash racket others Dimensions and axis relationships can be advantageous.
- ratios are only preferred information. These ratios can in a range of ⁇ 20% and particularly preferably in a range of Vary ⁇ 10%.
- the racket 30 in the preferred embodiment of the racket 30 according to the invention also in the range from about four to six o'clock or in the heart region 34 one or several bump-like bulges or reinforcements are provided.
- each have a bump-like curvature at the section n-n and p-p 51 and 53 provided. These bulges 51 and 53 are particularly for Absorption of particularly high stresses occurring at these points educated.
- the axis ratio approaches one on, i.e. the cross-sectional profile is approximately rounded square.
- Racket 30 to provide two such bump-like stiffening elements these are only optional. However, it is advantageous, at least in this area to provide one of these bumps, preferably two or more. In particular is it is advantageous to put two pairs of such stiffening elements on the racket provide axisymmetric arrangement.
- FIGS. 6 to 12. There will be one simplified embodiment of the racket 30 according to the invention described.
- the cross-sectional shape is an essentially circular or elliptical hollow profile.
- a hollow profile is shown, for example, in FIGS. 8, 10 and 12, each along the cross-sectional profile of the racket 30 according to the invention lines VIII-VIII at about one thirty, X-X at about five and, XII-XII in Represent heart area.
- Ellipse profile is an axis ratio of the axes L: 1 in the range between 26:15 to 30:15 and particularly 28:15.
- the section shown in Fig. 6 VIII-VIII is approximately in the range between one and two o'clock and in particular about one thirty.
- a rectangular profile because of Stiffening through the bridge can also, as shown in the Embodiment, a circular or elliptical profile for the cross-sectional shape of the Frame or the two frame webs 46 and 48 may be provided.
- an essentially rectangular hollow profile is particularly preferred.
- Such a rectangular hollow profile has a high moment of bending resistance and is therefore particularly suitable for absorbing bending stresses.
- Such bending stresses occur at the club head 32, particularly in the area of the section line IX-IX, ie between two and four o'clock. Consequently, between the two circular or elliptical hollow profiles on the section lines VIII-VIII and XX, a rectangular cross section is provided in the area of the section line IX-IX, the profiles preferably flowing smoothly or continuously into one another.
- the aspect ratio L 9 : l 9 is preferably about 2.5 to 3.5 and in particular about 3.
- Fig circular or elliptical profile illustrated 8 preferably to a narrower ellipse profile with an axial ratio of 8 L: tapered.
- a narrower ellipse profile corresponding to FIG. 11 can also be provided between the ends 42 and 44 of the head region 32 facing the handle section 36, which have the circular or elliptical profile according to FIG. 10, and the circular or elliptical profile along the line XII-XII .
- the axis ratio L 11 : L 11 in this range is preferably between 2.5 and 3.5 and in particular about 3.
- the Racket 30 according to the invention is also in relation to a central axis 52 essentially symmetrical, so that the above described Cross-sectional profiles between zero and six o'clock at appropriate points between twelve and six o'clock.
- All known materials for the racket 30 according to the invention are known Materials for tennis, squash, badminton and other rackets for Suitable for ball sports.
- the racket 30 according to the invention is made of Wood, metal, metal alloys, plastics, composite materials and Combinations can be made from it.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Pulmonology (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Golf Clubs (AREA)
- Prostheses (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Printing Methods (AREA)
Abstract
Description
- Fig. 1
- eine Vorderansicht eines herkömmlichen Tennisschlägers gemäß Stand der Technik;
- Fig. 2
- eine Seitenansicht des herkömmlichen Tennisschlägers gemäß Fig. 1;
- Fig. 3
- eine Teilvorderansicht einer Hälfte einer bevorzugten Ausführungsform des erfindungsgemäßen Schlägers;
- Fig. 4a bis 4t
- Schnittdarstellungen verschiedener Querschnittsprofile entlang der in Fig. 3 eingezeichneten Schnittlinien;
- Fig. 5
- eine vergrößerte Teil-Vorderansicht einer Hälfte einer bevorzugten Ausführungsform des erfindungsgemäßen Schlägers, ähnlich Figur 3, wobei die Achsverhältnisse der Querschnittsprofile an den jeweiligen Schnittstellen angegeben sind;
- Fig. 6
- eine schematische Vorderansicht einer vereinfachten Ausführungsform des erfindungsgemäßen Schlägers;
- Fig. 7
- eine Schnittdarstellung des Querschnittsprofils entlang der Linie VII-VII von Fig. 6;
- Fig. 8
- eine Schnittdarstellung des Querschnittsprofils entlang der Linie VIII-VIII von Fig. 6;
- Fig. 9
- eine Schnittdarstellung des Querschnittsprofils entlang der Linie IX-IX von Fig. 6;
- Fig. 10
- eine Schnittdarstellung des Querschnittsprofils entlang der Linie X-X von Fig. 6;
- Fig. 11
- eine Schnittdarstellung des Querschnittsprofils entlang der Linie XI-XI von Fig. 6;
- Fig. 12
- eine Schnittdarstellung des Querschnittsprofils entlang der Linie XII-XII von Fig. 6.
Claims (20)
- Schläger (30) für Ballspiele mit einem einen Schlägerkopf (32), einen Griffabschnitt (36) und einen zwischen dem Schlägerkopf (32) und dem Griffabschnitt (36) vorgesehenen Herzbereich (34) aufweisenden Rahmen, wobei ein den Rahmen bildendes Profil an verschiedenen Rahmenpositionen entsprechend den dort auftretenden Hauptbeanspruchungsarten verschiedene Querschnittsformen aufweist, die an die jeweiligen Beanspruchungsarten angepaßte Widerstandsmomente haben.
- Schläger nach Anspruch 1, wobei am Rahmen mindesten zwei höckerartige Versteifungselemente (51, 53) ausgebildet sind.
- Schläger nach Anspruch 2, wobei ein erstes höckerartiges Versteifungselement (53) im Bereich zwischen vier und sechs Uhr und ein zweites höckerartiges Versteifungselement im wesentlichen symmetrisch dazu zwischen sechs und acht Uhr auf einer gegenüberliegenden Schlägerseite vorgesehen ist.
- Schläger nach einem der Ansprüche 2 oder 3, wobei vier höckerartige Versteifungselemente (51, 53) vorgesehen sind, von denen ein erstes Paar im Bereich zwischen vier und sechs Uhr und ein zweites Paar im wesentlichen symmetrisch dazu zwischen sechs und acht Uhr auf einer gegenüberliegenden Schlägerseite ausgebildet ist.
- Schläger nach einem der Ansprüche 2 oder 3, wobei vier höckerartige Versteifungselemente (51, 53) vorgesehen sind, von denen ein erstes Paar mit einem Versteifungselement (53) im Bereich zwischen vier und sechs Uhr und mit einem Versteifungselement (51) am Herzbereich (34) des Schlägers (30) und ein zweites Paar im wesentlichen symmetrisch dazu ausgebildet ist.
- Schläger nach einem der Ansprüche 2 bis 5, wobei das Achsverhältnis im Bereich eines höckerartigen Versteifungselements (51, 53) zwischen 1,0 und 1,4, vorzugsweise zwischen 1,2 und 1,35 liegt.
- Schläger nach einem der Ansprüche 1 bis 6, wobei die Querschnittsbreiten von zwölf bis etwa drei Uhr und symmetrisch dazu zwischen zwölf und neun Uhr graduell größer werden.
- Schläger nach einem der Ansprüche 1 bis 7, wobei die an Biegebeanspruchungen angepaßte Querschnittsform ein angenähertes rechteckiges Hohlprofil ist.
- Schläger nach einem der Ansprüche 1 bis 8, wobei die an Torsionsbeanspruchungen angepaßte Querschnittsform ein im wesentlichen kreis- oder ellipsenförmiges Hohlprofil ist.
- Schläger nach Anspruch 8 oder 9, wobei das Rechteckprofil ein Seitenlängenverhältnis von 2,5 bis 3,5 und bevorzugt 3,0 aufweist.
- Schläger nach Anspruch 9 oder 10, wobei das Ellipsenprofil ein Achsverhältnis L:l von 26:15 bis 30:15 und bevorzugt von 28:15 aufweist.
- Schläger nach einem der Ansprüche 8 bis 11, wobei das Rechteckprofil im Bereich des Schlägerkopfes zwischen zwei und vier Uhr und zwischen acht und zehn Uhr und das Kreis- oder Ellipsenprofil im Bereich des Schlägerkopfs zwischen zehn und zwei Uhr ausgebildet ist.
- Schläger nach Anspruch 12, wobei das Rechteckprofil im Bereich des Schlägerkopfs bei drei und neun Uhr ausgebildet ist.
- Schläger nach einem der Ansprüche 8 bis 13, wobei das Kreis- oder Ellipsenprofil im Bereich zwischen etwa vier und acht Uhr ausgebildet ist.
- Schläger nach einem der Ansprüche 1 bis 14, wobei das den Rahmen bildende Profil hohl ist.
- Schläger nach einem der Ansprüche 1 bis 15, wobei im Bereich eines äußersten Kopfendes (50) im Kopfbereich (32) zwischen elf und ein Uhr ein Ellipsenprofil mit einem Achsverhältnis L:l von 2,5 bis 3,5 und bevorzugt von 28:9 vorgesehen ist.
- Schläger nach einem der Ansprüche 1 bis 16, wobei im Herzbereich (34) ein Rechteck-, Kreis- oder Ellipsenprofil ausgebildet ist.
- Schläger nach Anspruch 17, wobei das Kreis- oder Ellipsenprofil im Herzbereich (34) vom Kopfbereich (32) weg ein kleiner werdendes Achsverhältnis aufweist.
- Schläger nach einem der Ansprüche 1 bis 18, wobei die einzelnen Formen der Querschnittsprofile fließend ineinander übergehen.
- Schläger nach einem der Ansprüche 1 bis 19, wobei in einem Außenrand des Schlägerkopfes (32) zumindest abschnittsweise eine Vertiefung zur Aufnahme eines Kopfbandes vorgesehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19953626 | 1999-11-08 | ||
DE19953626A DE19953626B4 (de) | 1999-11-08 | 1999-11-08 | Schläger für Ballspiele |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1097730A1 true EP1097730A1 (de) | 2001-05-09 |
EP1097730B1 EP1097730B1 (de) | 2004-10-20 |
Family
ID=7928253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00123052A Expired - Lifetime EP1097730B1 (de) | 1999-11-08 | 2000-10-24 | Schläger für Ballspiele |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1097730B1 (de) |
CN (1) | CN1158116C (de) |
AT (1) | ATE279962T1 (de) |
DE (3) | DE19953626B4 (de) |
TW (1) | TW487589B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1790393A1 (de) * | 2005-11-29 | 2007-05-30 | Prince Sports, Inc. | Sport Schläger mit Rahmen bestehend aus mehreren Sektionen |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10304797B4 (de) * | 2003-02-05 | 2007-02-01 | Völkl Tennis GmbH | Ballspielschläger, insbesondere Tennisschläger |
DE10308532B3 (de) | 2003-02-27 | 2004-10-21 | Head Technology Ges.M.B.H. | Schläger für Ballspiele |
DE102006004863B4 (de) * | 2006-02-02 | 2007-12-27 | Head Technology Gmbh | Schläger für Ballspiele |
DE102007056831B4 (de) | 2007-11-26 | 2015-10-22 | Head Technology Gmbh | Schläger mit Gelenk |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2282195A (en) * | 1941-02-05 | 1942-05-05 | Compte John M Le | Racket |
US4664380A (en) * | 1984-09-22 | 1987-05-12 | Siegfried Kuebler | Racket having thickened shaft portion |
US4997186A (en) * | 1989-12-08 | 1991-03-05 | Ferrari Importing Company, Inc. | Racket frame having multi-dimensional cross-sectional construction |
EP0477533A1 (de) * | 1990-08-21 | 1992-04-01 | Wilson Sporting Goods Company | Tennisschläger |
US5299801A (en) * | 1991-05-23 | 1994-04-05 | Donnay International S.A. | Tennis racket |
US5312102A (en) * | 1993-02-04 | 1994-05-17 | Lisco, Inc. | Variable inertia head racket |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3910871A1 (de) * | 1988-04-06 | 1989-10-19 | Prince Mfg | Schlaeger fuer ballspiele, insbes. tennisschlaeger |
DE4116901A1 (de) * | 1991-05-23 | 1992-11-26 | Donnay Int Sa | Tennisschlaeger |
DE9205164U1 (de) * | 1992-04-14 | 1992-06-11 | Tseng, Kuni, Taipeh/T'ai-Pei | Schläger für Tennis, Rackettball, Squash, Badminton u.dgl. |
US5810683A (en) * | 1996-12-23 | 1998-09-22 | Prince Sports Group, Inc. | Morph frame for sports racquet |
-
1999
- 1999-11-08 DE DE19953626A patent/DE19953626B4/de not_active Expired - Fee Related
-
2000
- 2000-10-24 AT AT00123052T patent/ATE279962T1/de active
- 2000-10-24 DE DE20023541U patent/DE20023541U1/de not_active Expired - Lifetime
- 2000-10-24 EP EP00123052A patent/EP1097730B1/de not_active Expired - Lifetime
- 2000-10-24 DE DE50008315T patent/DE50008315D1/de not_active Expired - Lifetime
- 2000-11-07 TW TW089123504A patent/TW487589B/zh not_active IP Right Cessation
- 2000-11-08 CN CNB00132926XA patent/CN1158116C/zh not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2282195A (en) * | 1941-02-05 | 1942-05-05 | Compte John M Le | Racket |
US4664380A (en) * | 1984-09-22 | 1987-05-12 | Siegfried Kuebler | Racket having thickened shaft portion |
US4997186A (en) * | 1989-12-08 | 1991-03-05 | Ferrari Importing Company, Inc. | Racket frame having multi-dimensional cross-sectional construction |
EP0477533A1 (de) * | 1990-08-21 | 1992-04-01 | Wilson Sporting Goods Company | Tennisschläger |
US5299801A (en) * | 1991-05-23 | 1994-04-05 | Donnay International S.A. | Tennis racket |
US5312102A (en) * | 1993-02-04 | 1994-05-17 | Lisco, Inc. | Variable inertia head racket |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1790393A1 (de) * | 2005-11-29 | 2007-05-30 | Prince Sports, Inc. | Sport Schläger mit Rahmen bestehend aus mehreren Sektionen |
US7503860B2 (en) | 2005-11-29 | 2009-03-17 | Prince Sports, Inc. | Sports racquet with multi-section frame |
Also Published As
Publication number | Publication date |
---|---|
DE50008315D1 (de) | 2004-11-25 |
DE19953626A1 (de) | 2001-06-21 |
CN1158116C (zh) | 2004-07-21 |
DE19953626B4 (de) | 2004-02-05 |
DE20023541U1 (de) | 2004-10-07 |
EP1097730B1 (de) | 2004-10-20 |
ATE279962T1 (de) | 2004-11-15 |
CN1294934A (zh) | 2001-05-16 |
TW487589B (en) | 2002-05-21 |
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