Spin improvement string tool
US8631834B2 · kind B2 · utility
1Cited by
13References
8Claims
0Family size
Inventor
Key dates
| Filing date | Jan 21, 2012 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Aug 10, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B51/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The spin improvement string pliers is a pivotally secured together plier device used to manually restructure and roughen the surface of a synthetic or a polyester string on a strung tennis racquet by means of plastic deformation. The line grids on the pliers depress the string, leaving a series of indentations on the string surface that increases the friction between the string and the ball so that the tennis player can more easily generate top or under spin on a tennis ball.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.