| Patents for A63B 51 - Stringing tennis rackets (1,355) |
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| 07/28/2004 | CN2628102Y Tennis racket string buckle |
| 07/28/2004 | CN2628101Y Frame of racket |
| 07/20/2004 | US6764418 Stringer of a racket |
| 07/14/2004 | CN2624980Y Improved threading machine for rackets |
| 07/07/2004 | CN2623290Y Yarn trapper of bat threading machine |
| 07/07/2004 | CN2623289Y Modified threading machine of bat |
| 07/07/2004 | CN2623288Y Modified sliding rail type thread pulling device of threading machine |
| 07/07/2004 | CN1509784A Improved racket threading machines |
| 07/01/2004 | DE10257821A1 Sports racket has individual strings in groups with first group close to longitudinal or cross axis consisting of stringing material with less elasticity than group further away from axes |
| 06/29/2004 | US6755756 Device for deadening noise and absorbing shock of tennis racket strings |
| 06/24/2004 | DE10257808A1 Ball game racquet has cross strings with different spacings and tension characteristics in different areas of head |
| 06/02/2004 | CN2618645Y String thread with coarse surface |
| 04/14/2004 | CN2610978Y Multi-functional rocket |
| 03/30/2004 | US6712723 Tennis racket stringing machine |
| 03/24/2004 | EP0843581B1 Non-rotating stringing machine and method |
| 03/17/2004 | CN2606617Y Racket with improved handle |
| 03/11/2004 | US20040048699 Racket string correction tool |
| 03/03/2004 | EP1393781A1 Device and method for tensioning strings on sport raquets after they have been previously and tensionless woven on them |
| 03/03/2004 | EP1393780A1 Racket string correction tool |
| 02/25/2004 | CN2604206Y Stringing tennis racket with thrust force on net surface |
| 02/17/2004 | US6692387 Racquet string alignment tool |
| 02/12/2004 | WO2004012824A1 String aligning device for rackets |
| 02/11/2004 | CN2602797Y Racket with shock-damper metal spring steel piece |
| 02/05/2004 | WO2003099387A3 Tennis racket, plastic string for carrying out the racket stringing and process for carrying out the racket stringing |
| 02/05/2004 | US20040023738 Device for deadening noise and absorbing shock of tennis racket strings |
| 01/22/2004 | WO2004007032A1 Sport racket |
| 01/21/2004 | CN2600140Y Frame of racket |
| 01/14/2004 | CN2598594Y Wire drawing pole of racket braiding machine |
| 01/08/2004 | US20040005944 String package for a game racquet and method of stringing a racquet |
| 01/07/2004 | CN2597027Y Stringing hole structure for racket |
| 12/31/2003 | CN2595412Y Improved racket threading machine |
| 12/17/2003 | CN2592221Y Racket |
| 12/04/2003 | WO2003099387A2 Tennis racket, plastic string for carrying out the racket stringing and process for carrying out the racket stringing |
| 12/03/2003 | CN1129461C Filament for racket |
| 11/13/2003 | US20030211908 Racket |
| 11/12/2003 | EP1360975A2 Racket |
| 10/29/2003 | CN1451454A Racket threading machine controlling device |
| 10/28/2003 | US6638577 Method of manufacturing golf club head |
| 10/22/2003 | CN2581011Y Stringing structure for tennis racket |
| 10/21/2003 | US6634968 String for a racket |
| 10/08/2003 | CN2577906Y Rackets |
| 09/30/2003 | US6626774 Stringless sports racquet |
| 09/03/2003 | CN2569844Y Racket frame with string hole forming structure |
| 09/03/2003 | CN2569843Y Integral shaped racket frame |
| 09/03/2003 | CN2569842Y Racket with racket frame shock-absorbing structure |
| 08/28/2003 | WO2003070330A1 Device for replacing gut |
| 08/07/2003 | US20030145574 Composite synthetic string for tennis racket |
| 07/17/2003 | US20030134702 Game racket |
| 07/08/2003 | US6589125 Compound material frame body without the need of drilling holes |
| 06/24/2003 | US6583590 String drawing device for a racquet |
| 05/28/2003 | EP1314456A1 Two-piece grommet assembly for a sports racquet |
| 05/07/2003 | CN2548666Y Controller of string punch of racket |
| 05/07/2003 | CN2548665Y Shock absorber of racket |
| 05/07/2003 | CN1416358A Tennis racket stringing machine |
| 04/22/2003 | US6551206 Multi-purpose racket |
| 04/17/2003 | US20030073521 Stringless sports racquet |
| 04/17/2003 | CA2359153A1 Stringless sports racquet |
| 04/01/2003 | US6540626 Racket structure with ball-striking racket face |
| 03/26/2003 | CN1404894A Multi-purpose racket |
| 03/20/2003 | US20030054907 Multi-purpose racket |
| 03/18/2003 | US6533687 String clip positioning device of a racket string stretcher |
| 03/04/2003 | US6527656 Two-piece grommet assembly for a sports racquet |
| 02/27/2003 | DE20116493U1 Tensioner has a strut with spacers which move in the longitudinal direction of the strong in a groove and work in a semicircular shape opposite the strut are right angled grooves |
| 02/20/2003 | US20030036449 Tennis racket elliptical angular head frame and framing, triple independent strings and strings channels, variable center of gravity systems |
| 02/19/2003 | CN1101863C Yarn, catgut, music wire comprising polytrimethylene terephtharate and mfg. method thereof |
| 02/12/2003 | CN2535091Y Racket dwith batting wire side |
| 02/06/2003 | US20030027670 String tensioning force controlling apparatus for a racket stringer |
| 02/05/2003 | EP1280586A1 Composite synthetic string for tennis racket |
| 02/05/2003 | CN1395001A Abrasion-proof high-elasticity strings structure and its production method |
| 01/30/2003 | US20030022740 Tennis racket stringing machine |
| 01/29/2003 | CN1100222C Jamming cleat |
| 01/14/2003 | US6506134 Interlocking string network for sports rackets |
| 01/14/2003 | US6506133 Racket with apparatus for enhancing elasticity of network |
| 01/07/2003 | US6503623 Yarn comprising polytrimethylene terephthalate |
| 12/19/2002 | US20020193190 Racquet string alignment tool |
| 12/11/2002 | EP1263509A1 Racquet with visually differentiated grommets and method of stringing thereof |
| 12/04/2002 | EP1261399A1 Tennis racket stringing machine |
| 11/07/2002 | US20020165051 Prewoven string for sports racquet |
| 10/08/2002 | US6460321 Racquet string |
| 09/26/2002 | US20020136842 Electrostatic spray coating with a paint so that it is electrified against the head |
| 09/17/2002 | US6450904 String for a racket |
| 09/04/2002 | CN2508807Y Racket bar nail |
| 08/14/2002 | CN2505135Y 网球拍改良结构 Tennis racket improved structure |
| 08/13/2002 | US6432005 Racket with lengthened longitudinal strings |
| 08/08/2002 | DE10151742A1 Ballschläger mit Doppelschlagflächen Racket with dual shock surfaces |
| 07/24/2002 | CN2501536Y Stringing device for tennis racket |
| 07/24/2002 | CN2501535Y Shockproof device for tennis racket |
| 07/10/2002 | CN2499074Y Thread pulling device for racket threading machine |
| 07/04/2002 | DE10062883A1 Tennis racket has tension frame profiles which are closed on outer side of tension frame profiles facing supporting profiles |
| 07/03/2002 | CN2497829Y Double-layer tennis racket |
| 06/27/2002 | DE10151772A1 Racket for ball games has gas filled elastic chambers to control tension |
| 06/27/2002 | DE10151728A1 Racket with separate double stringed areas, has connector parts for pulling together or pressing apart string planes |
| 06/20/2002 | DE10151769A1 Racket, has separate playing surface areas with parts acting as counter or intermediate support for these areas |
| 06/20/2002 | DE10151729A1 Sports and leisure racket comprises different playable stringed surfaces |
| 06/20/2002 | DE10151727A1 Sports and leisure racket comprises a highly tensile additional set of strings lying close to or a short distance away from a playing surface |
| 06/11/2002 | US6403504 Carbon fiber tow and thermoplastic fiber tow; of particular importance are the liquid crystal polymers or lcps |
| 06/11/2002 | US6402646 Sports and game racket utilizing a preassembled woven stringing surface |
| 06/04/2002 | US6398674 Gut-clamping mechanism in gut-stretching equipment for tennis rackets |
| 05/15/2002 | CN2491067Y Racket |
| 05/14/2002 | US6386999 Method of using a forming grid with a fielding practice bat |