US20050215361A1 - Racket frame structure made of aluminum alloy - Google Patents
Racket frame structure made of aluminum alloy Download PDFInfo
- Publication number
- US20050215361A1 US20050215361A1 US10/813,508 US81350804A US2005215361A1 US 20050215361 A1 US20050215361 A1 US 20050215361A1 US 81350804 A US81350804 A US 81350804A US 2005215361 A1 US2005215361 A1 US 2005215361A1
- Authority
- US
- United States
- Prior art keywords
- main body
- reinforcement ribs
- frame structure
- side wall
- racket frame
- 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.)
- Abandoned
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
- 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
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
-
- 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
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/48—Details or accessories of golf clubs, bats, rackets or the like with corrugated cross-section
Abstract
A racket frame structure includes a main body having an inner side wall and an outer side wall. The inner side wall of the main body having two sides each formed with a plurality of reinforcement ribs. The reinforcement ribs are located at connections of the main strings and the cross strings on the main body. Thus, the main body at the connections of the main strings and the cross strings is strengthened by the reinforcement ribs so as to enhance the strength of the main body, thereby preventing the main body of the frame from being deformed, distorted or broken at the connections of the main strings and the cross strings due to a larger striking force.
Description
- 1. Field of the Invention
- The present invention relates to a racket frame structure made of an aluminum alloy, and more particularly to a racket frame structure having a plurality of reinforcement ribs that can enhance the strength of the racket frame structure to prevent the racket frame structure from being deformed or broken due to an excessive external force.
- 2. Description of the Related Art
- A conventional racket 1 in accordance with the prior art shown in
FIGS. 1-3 comprises aframe 11, a plurality of main andcross strings 12 mounted in theframe 11, aprotective strip 14 mounted on a periphery of theframe 11 by a plurality ofscrews 17, athroat 15 mounted in theframe 11, and agrip 16 mounted on a side of theframe 11. Theframe 11 has aninner side wall 111 and anouter side wall 112 and is formed with a plurality ofstring holes 13 each extended through theinner side wall 111 and theouter side wall 112 for passage of the main andcross strings 12. - However, the
frame 11 has a constant cross section, so that theframe 11 cannot be designed to have different cross sections at different striking locations of theframe 11. In addition, theframe 11 is subjected to a larger striking force at connections of the main andcross strings 12, so that theframe 11 is easily deformed or broken at the connections of the main andcross strings 12 during a long-term utilization. - The primary objective of the present invention is to provide a racket frame structure made of an aluminum alloy.
- Another objective of the present invention is to provide a racket frame structure having a plurality of reinforcement ribs that can enhance the strength of the racket frame structure to prevent the racket frame structure from being deformed or broken due to an excessive external force.
- A further objective of the present invention is to provide a racket frame structure, wherein the main body at the connections of the main strings and the cross strings is strengthened by the reinforcement ribs so as to enhance the strength of the main body, thereby preventing the main body of the frame from being deformed, distorted or broken at the connections of the main strings and the cross strings due to a larger striking force.
- A further objective of the present invention is to provide a racket frame structure, wherein the main body of the frame has different cross sections by provision of the reinforcement ribs so that the frame has a variation in shape, thereby changing the configuration of the frame.
- A further objective of the present invention is to provide a racket frame structure, wherein the length, width and shape of the reinforcement ribs can be changed to change the pattern of the frame, thereby enhancing the outer appearance of the frame.
- In accordance with the present invention, there is provided a racket frame structure, comprising:
-
- a main body having an inner side wall and an outer side wall;
- the inner side wall of the main body having two sides each formed with a plurality of reinforcement ribs.
- Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
-
FIG. 1 is a partially cut-away exploded perspective view of a conventional racket in accordance with the prior art; -
FIG. 2 is a partially cut-away plan cross-sectional assembly view of the conventional racket as shown inFIG. 1 ; -
FIG. 3 is a plan cross-sectional view of a frame of the conventional racket as shown inFIG. 1 ; -
FIG. 4 is a plan view of a tennis racket in accordance with the preferred embodiment of the present invention; -
FIG. 5 is a partially perspective cross-sectional view of a frame of the racket as shown inFIG. 4 ; -
FIG. 6 is a plan view of the frame of the racket as shown inFIG. 5 ; -
FIG. 7 is a plan view of a badminton racket in accordance with the preferred embodiment of the present invention; -
FIG. 8 is a partially perspective cross-sectional view of a frame of a racket in accordance with another embodiment of the present invention; -
FIG. 9 is a plan cross-sectional view of the frame of the racket as shown inFIG. 8 ; and -
FIG. 10 is a plan cross-sectional view of a frame of a racket in accordance with another embodiment of the present invention. - Referring to the drawings and initially to
FIGS. 4-6 , a tennis racket in accordance with the preferred embodiment of the present invention comprises aframe 2 made of an aluminum alloy, athroat 26 and agrip 27. Theframe 2 includes amain body 21, and a plurality ofmain strings 22 and a plurality ofcross strings 220 mounted in themain body 21 to form aracket face 24. - The
main body 21 is a hollow body. Themain body 21 has aninner side wall 211 and anouter side wall 212 and is formed with a plurality ofstring holes 23 each extended through theinner side wall 211 and theouter side wall 212 for passage of themain strings 22 and thecross strings 220. - The
inner side wall 211 of themain body 21 has two sides each formed with a plurality ofreinforcement ribs 25 each located beside thestring holes 23. Each of thereinforcement ribs 25 is formed by a punching or rolling process. Each of thereinforcement ribs 25 is recessed and has amediate portion 251 and twodistal ends 252, wherein each of thereinforcement ribs 25 has a depth gradually increased from each of the twodistal ends 252 to themediate portion 251 thereof. Preferably, thereinforcement ribs 25 are located at connections of themain strings 22 and thecross strings 220 on themain body 21. In such a manner, each of thereinforcement ribs 25 is recessed and has a depth gradually increased from each of the twodistal ends 252 to themediate portion 251 thereof, so that themain body 21 of theframe 2 has different cross sections. - Accordingly, the
main body 21 at the connections of themain strings 22 and thecross strings 220 is strengthened by thereinforcement ribs 25 so as to enhance the strength of themain body 21, thereby preventing themain body 21 of theframe 2 from being deformed, distorted or broken at the connections of themain strings 22 and thecross strings 220 due to a larger striking force. In addition, themain body 21 of theframe 2 has different cross sections by provision of thereinforcement ribs 25 so that theframe 2 has a variation in shape, thereby changing the configuration of theframe 2. Further, the length, width and shape of thereinforcement ribs 25 can be changed to change the pattern of theframe 2, thereby enhancing the outer appearance of theframe 2. - Referring to
FIG. 7 , theframe 2 is available for a badminton racket. - Referring to
FIGS. 8 and 9 , each of thereinforcement ribs 25 is recessed and has a constant depth. - Referring to
FIG. 10 , theinner side wall 211 of themain body 21 has two sides each formed with a plurality ofreinforcement ribs 28. Preferably, each of thereinforcement ribs 28 is protruding outward. - Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.
Claims (11)
1. A racket frame structure, comprising:
a main body having an inner side wall and an outer side wall;
the inner side wall of the main body having two opposite sides each formed with a plurality of reinforcement ribs arranged in a symmetric manner;
a plurality of main strings and a plurality of cross strings mounted in the main body to form a racket face, wherein the reinforcement ribs are located at connections of the main strings and the cross strings on the main body.
2. The racket frame structure in accordance with claim 1 , wherein the main body is made of an aluminum alloy.
3. (canceled)
4. The racket frame structure in accordance with claim 1 , wherein the main body is formed with a plurality of string holes each extended through the inner side wall and the outer side wall of the main body, and each located between the reinforcement ribs at the two opposite sides of the inner side wall of the main body.
5. The racket frame structure in accordance with claim 1 , wherein each of the reinforcement ribs is formed by a punching process.
6. The racket frame structure in accordance with claim 1 , wherein each of the reinforcement ribs is formed by a rolling process.
7. The racket frame structure in accordance with claim 1 , wherein each of the reinforcement ribs is recessed.
8. The racket frame structure in accordance with claim 7 , wherein each of the reinforcement ribs has an elongated recess extended through a determined length of the inner side wall of the main body and having a mediate portion and two distal ends, and the elongated recess of each of the reinforcement ribs has a depth gradually increased from each of the two distal ends to the mediate portion thereof.
9. The racket frame structure in accordance with claim 8 , wherein the main body has different cross sections by provision of the reinforcement ribs so that the different cross sections of the main body have different thickness.
10. The racket frame structure in accordance with claim 7 , wherein each of the reinforcement ribs has a constant depth.
11. The racket frame structure in accordance with claim 1 , wherein each of the reinforcement ribs is protruding outward.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/813,508 US20050215361A1 (en) | 2004-03-29 | 2004-03-29 | Racket frame structure made of aluminum alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/813,508 US20050215361A1 (en) | 2004-03-29 | 2004-03-29 | Racket frame structure made of aluminum alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050215361A1 true US20050215361A1 (en) | 2005-09-29 |
Family
ID=34990755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/813,508 Abandoned US20050215361A1 (en) | 2004-03-29 | 2004-03-29 | Racket frame structure made of aluminum alloy |
Country Status (1)
Country | Link |
---|---|
US (1) | US20050215361A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1422993A (en) * | 1922-02-13 | 1922-07-18 | Dayton Steel Racquet Company | Elastic metal stringing, and the method of making the same |
US1451836A (en) * | 1921-08-02 | 1923-04-17 | Dayton Steel Racquet Company | Racket for tennis and similar games |
US4561655A (en) * | 1984-06-14 | 1985-12-31 | Ektelon | Tubular steel racquet frame having varying cross-section |
US5082266A (en) * | 1990-08-30 | 1992-01-21 | Lo Kun Nan | Racket head with inner peripheral indentations |
US5158288A (en) * | 1990-08-09 | 1992-10-27 | Industrial Technology Research Institute | Tennis racket frame with multiple cross-sectional shapes |
US6447412B1 (en) * | 2000-04-18 | 2002-09-10 | Ef Composite Technologies, L.P. | Sports racket with undulations in frame interior surface |
US20040102262A1 (en) * | 2002-11-22 | 2004-05-27 | Chin-Dong Pai | Aluminum tennis racket |
-
2004
- 2004-03-29 US US10/813,508 patent/US20050215361A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1451836A (en) * | 1921-08-02 | 1923-04-17 | Dayton Steel Racquet Company | Racket for tennis and similar games |
US1422993A (en) * | 1922-02-13 | 1922-07-18 | Dayton Steel Racquet Company | Elastic metal stringing, and the method of making the same |
US4561655A (en) * | 1984-06-14 | 1985-12-31 | Ektelon | Tubular steel racquet frame having varying cross-section |
US5158288A (en) * | 1990-08-09 | 1992-10-27 | Industrial Technology Research Institute | Tennis racket frame with multiple cross-sectional shapes |
US5082266A (en) * | 1990-08-30 | 1992-01-21 | Lo Kun Nan | Racket head with inner peripheral indentations |
US6447412B1 (en) * | 2000-04-18 | 2002-09-10 | Ef Composite Technologies, L.P. | Sports racket with undulations in frame interior surface |
US20040102262A1 (en) * | 2002-11-22 | 2004-05-27 | Chin-Dong Pai | Aluminum tennis racket |
US6761651B2 (en) * | 2002-11-22 | 2004-07-13 | Chin-Dong Pai | Aluminum tennis racket |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005065312A3 (en) | Golf club having stepped grooves | |
WO2004075996A3 (en) | Sports racquet with frame openings | |
US3540728A (en) | Racket with metal frame welded to handle sleeve | |
KR20060091218A (en) | Golf club head of which loft angle can be changed | |
US4119313A (en) | Games racquets | |
US20180290033A1 (en) | Weighted Golf Grip | |
KR20090004368A (en) | Golf club heads with a plurality of stress zones and methods to manufacture golf club heads | |
US6050909A (en) | Game racquet with string slots in inner wall | |
US7371196B2 (en) | Lacrosse handle | |
USD482094S1 (en) | Faceplate groove for a golf club | |
TW200524657A (en) | Racket for ball games and production process | |
US20050215361A1 (en) | Racket frame structure made of aluminum alloy | |
US4299348A (en) | Method of making a game racket | |
US7229369B2 (en) | Ball sport racquet especially tennis racquet | |
EP0907389A1 (en) | Long string racquets | |
TWI330538B (en) | Racket for ball games | |
JPH11155985A (en) | Golf club | |
US7044869B2 (en) | Racket for ball games and production process | |
US5277422A (en) | Games racket frame | |
US20070270256A1 (en) | Sports racquet | |
US6761651B2 (en) | Aluminum tennis racket | |
US4265450A (en) | Metal racketball rackets | |
US5460370A (en) | Structure of racket | |
JP6525745B2 (en) | racket | |
US5029858A (en) | Structure of a composite fiber racket |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |