Exercise and training tensioning device for sporting racquets
US5022651A · kind A · utility
13Cited by
1References
2Claims
0Family size
Inventor
Key dates
| Filing date | May 24, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | May 24, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B60/54
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A device for changing the vibrations in the striking surface of a hand held sporting racquet having strings, the device comprising a block of one or more rigid materials having a cut-out mounting groove along the periphery of the block so as to have the block engage a set of adjacent strings when inserted between strings on the striking surface of the sporting racquet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.