FIELD: sports.
SUBSTANCE: invention relates to sports equipment. Racket is fixed in machine and fixed. Prior to tightening, string is stretched in three stages with maximum force of 40-50 kg. Duration of stretching in each stage makes 30-60 seconds. Length of string when stretched at the first stage increases by 50% from the maximum value of extension. At the second stage of stretching, length of string increases by 20-30%. At the third stage of stretching, string extends by another 20-30%.
EFFECT: improved operational characteristics of rocket string surface by means of preliminary preparation of string prior to its tightening on racket.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF STRINGING RACQUETS | 0 |
|
SU1537124A3 |
| MACHINE FOR STRETCHING OF TENNIS RACKET STRINGS | 2006 |
|
RU2314851C1 |
| BENCH FOR TIGHTENING LONGITUDINAL STRINGS OF TENNIS RACKETS | 0 |
|
SU1736527A1 |
| MONOFILAMENT STRING FOR RACKET AND METHOD FOR MANUFACTURING SUCH A MONOFILAMENT STRING | 2018 |
|
RU2762178C2 |
| APPLIANCE FOR TENSIONING STRINGS OF TENNIS RACKET | 0 |
|
SU1304829A1 |
| TENNIS RACKET | 2009 |
|
RU2394620C1 |
| 0 |
|
SU1784244A1 | |
| TENNIS RACKET | 2010 |
|
RU2411979C1 |
| DEVICE FOR TIGHTENING STRINGS OF TENNIS RACKETS | 0 |
|
SU1804873A1 |
| TENNIS RACKET | 2009 |
|
RU2386465C1 |
