Racket with anti-shock air cushion
US5083776A · kind A · utility
4Cited by
1References
3Claims
0Family size
Inventor
Key dates
| Filing date | Mar 7, 1991 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Mar 7, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B60/54
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A racket with anti-shock air cushions, constructed with poly-urethane air cushions provided at a lower end of the frame closely spaced with connecting tube passing therethrough. Inflation and exhaust elements are provided below the lower end of the frame and between two throats, thereby properly regulating the air cushions and attaining an optimal anti-shock effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.