| Patents for A63B 51 - Stringing tennis rackets (1,355) |
|---|
| 07/18/1993 | CA2106101A1 Process and device for determining tensile forces when stringing rackets |
| 07/14/1993 | CN1021545C Racket and its seat |
| 07/07/1993 | EP0550252A1 Tennis racquets |
| 07/07/1993 | CN2137545Y Stringing machine for racket |
| 07/01/1993 | CA2086183A1 Tennis racquet |
| 06/29/1993 | US5222998 Device for facilitating application of variable tension to sports racquet stringing bed |
| 06/16/1993 | CN1073118A Games racket frame |
| 06/15/1993 | US5219165 Tennis racquet |
| 06/08/1993 | US5217222 Toy racket with sound resonating membrane |
| 05/19/1993 | EP0542461A2 Games racket |
| 05/13/1993 | WO1993008880A1 Sports racquet with hybrid stringing arrangement |
| 05/13/1993 | CA2082257A1 Games racket |
| 05/04/1993 | US5207423 Tennis racket string straightener |
| 03/31/1993 | CA2052492A1 Games rackets |
| 03/30/1993 | US5197731 String suspension and frame construction for sports rackets |
| 03/10/1993 | EP0530193A1 Device for monitoring raquet stringing |
| 03/04/1993 | WO1993003800A1 Toy racket with sound resonating membrane |
| 02/24/1993 | CN2127319Y Stranding device for racket net |
| 02/23/1993 | US5188359 Drum beat sounding racket |
| 02/16/1993 | US5186505 Chucking device of racket stringing machine |
| 02/16/1993 | US5186459 Process for stringing rackets for ball games and a device for carrying out the process |
| 01/12/1993 | CA1312635C Tennis racket |
| 12/02/1992 | EP0515586A1 Process for stringing racquets |
| 11/26/1992 | WO1992020410A1 Tennis, squash or other racquet |
| 11/26/1992 | DE4134566A1 Tennis-, squash-, racquetball- oder anderer schlaeger Tennis squash, racquetball or other rowdy |
| 11/11/1992 | CN2121252U Improved compound material structure for racket wire |
| 10/29/1992 | DE4143133A1 Tennis racquet head with diagonal strings - uses two strings to form taut grid system which does not slacken if one string breaks |
| 10/27/1992 | US5158285 Prefabricated racket string assembly |
| 10/15/1992 | WO1992017246A1 Devices for tensioning and blocking racket strings |
| 10/14/1992 | CN2118551U Racket stringing aid holder |
| 09/16/1992 | CN2115815U Badmington racket |
| 09/09/1992 | CN2115132U Improved structure of racket |
| 09/08/1992 | US5145172 String for racket |
| 09/08/1992 | CA1307303C Method for stringing a game racket with vertical and diagonal sets of strings and strung racket |
| 09/02/1992 | CN2114483U Racket |
| 08/27/1992 | DE4105983A1 Racquet frame tightener with holder - has pivot-mounted support on which are attachments, with tension plates and clamp |
| 08/26/1992 | CN2113798U Stringing racket |
| 08/25/1992 | US5141227 Prefabricated stringing for a sports racket |
| 08/20/1992 | DE4104988A1 Ball game racquet, especially for tennis - has inner continuous frame, and outer sectional frame, with tube with inlet and outlet and filled with compressed air |
| 08/13/1992 | DE4103730A1 String for racquet, for tennis - has oval elliptical cross=section with twisted lengthwise cross=section axis |
| 08/11/1992 | US5137273 Racket |
| 07/28/1992 | US5133217 Tensiometer |
| 07/21/1992 | US5131653 Racket for play and sports |
| 07/09/1992 | DE4100081A1 Adjustment of tension of strings in tennis racket - is performed by rotary knob at end of handle, controlling tightness of wire through string loops |
| 06/23/1992 | US5123284 Method and apparatus for mesurement of tension in an elastic surface |
| 06/11/1992 | WO1992009335A1 Table tennis racket with membranous stricking surface and adjustable control and speed |
| 06/09/1992 | US5120056 Stringing tool for sports rackets |
| 06/08/1992 | WO1992010243A1 Raquet-string adjustment device |
| 06/08/1992 | CA2097926A1 String adjustment device for ball rackets, for example tennis rackets |
| 06/03/1992 | EP0488873A1 Fabrication process for cords intended for tensile load, particularly for strings of tennis rackets and musical instruments, and strings thus obtained |
| 06/03/1992 | EP0466823A4 Racket with elastic string guide |
| 06/03/1992 | EP0465605A4 Ridged racquet string |
| 05/20/1992 | EP0377614B1 Electronic athletic equipment |
| 04/30/1992 | WO1992006748A1 Process for stringing racquets |
| 04/08/1992 | CN2100917U Multi-layer net surface racket |
| 04/01/1992 | EP0478477A1 Procedure and device for producing a string for the stringing of tennis or like rackets and resulting string |
| 03/25/1992 | EP0366778B1 Tennis racket |
| 03/18/1992 | CN1015908B Process for the preparation of cellulose film, cellulose film produced thereby, artificial skin graft and its use |
| 03/11/1992 | EP0455739A4 Vibration dampening device for a sports racket |
| 03/05/1992 | DE4032745A1 Stringing system for racquets - has homogeneous stringing, without displaced strings |
| 03/04/1992 | EP0473528A1 Stringing device for rackets |
| 02/25/1992 | US5090697 Racket frame stringing machine |
| 02/25/1992 | US5090188 Ridged racquet string |
| 02/19/1992 | EP0471283A1 Pre-strung web for tennis or like rackets |
| 02/13/1992 | DE4035796A1 Prefab tennis racquet structure - has transverse and lengthwise strings, with collector part |
| 01/22/1992 | EP0466823A1 Racket with elastic string guide. |
| 01/15/1992 | EP0465848A1 String vibration dampener for a tennis racquet |
| 01/15/1992 | EP0465605A1 Ridged racquet string |
| 01/14/1992 | US5080360 Equipment for stringing a tennis racket |
| 12/24/1991 | CA1293367C Composite carbon fiber and thermoplastic fiber blends |
| 12/18/1991 | CN2090713U 超级网球拍弦 Super tennis racket strings |
| 11/13/1991 | EP0455739A1 Vibration dampening device for a sports racket |
| 10/29/1991 | US5060524 Racket stringing tension measuring device |
| 10/16/1991 | EP0451424A1 Racquet stringing tension measuring device |
| 10/12/1991 | CA2014494A1 Racquet string tension measuring device |
| 10/02/1991 | CN2085673U Miniature string tensing device and string fixing pincers for tennis racket |
| 09/17/1991 | US5048352 Racquet string tension measuring device |
| 09/05/1991 | WO1991010481A3 Device for monitoring raquet stringing |
| 08/14/1991 | EP0440682A1 Process and device for stringing rackets for ball games. |
| 08/08/1991 | WO1991011224A1 Racket with elastic string guide |
| 08/06/1991 | US5037097 Sports racket |
| 08/01/1991 | DE4100755A1 Tennis racquet stringing machine - has tightening beams acting on opposite string ends and sliding on baseplate |
| 07/30/1991 | US5035429 String straightener for tennis racket |
| 07/30/1991 | CA1287006C Process for the preparation of cellulose film, cellulose film produced thereby, artificial skin graft, and its use |
| 07/27/1991 | WO1991011549A1 Ridged racquet string |
| 07/27/1991 | CA2049307A1 Ridged racquet string |
| 07/25/1991 | WO1991010481A2 Device for monitoring raquet stringing |
| 07/25/1991 | WO1991010480A1 Device for monitoring raquet stringing |
| 07/24/1991 | CN2081311U Racket string fixed clamping pliers |
| 07/18/1991 | DE4001009A1 Threader for transverse strings of racquet - consists of broad arrow with shaft and point, with diverging sides and stops |
| 07/17/1991 | CN2080856U Racket with frame internal-side having notch |
| 07/09/1991 | US5029857 Frame with adjustable string tensioning means |
| 06/25/1991 | US5026055 Equipment for stringing a tennis racket |
| 06/05/1991 | EP0429533A1 Sports racket. |
| 05/22/1991 | EP0427895A1 String clamp for racquet stringing machine |
| 05/10/1991 | CA2002731A1 A procedure for stringing racquets used for ball games and an apparatus for carrying out this procedure |
| 05/01/1991 | CA2023934A1 High aspect ratio tennis racket head and method of stringing |
| 04/16/1991 | US5007294 Process and device for measuring the tension of racket strings |
| 04/10/1991 | EP0421950A1 Tennis racket with two differently tensioned stringings |
| 04/10/1991 | EP0420891A1 Device for rackets |