Tennis racket
US4033583A · kind A · utility
17Cited by
4References
5Claims
0Family size
Inventor
Key dates
| Filing date | Mar 16, 1976 |
| Grant date | Jul 5, 1977 |
| Priority date | — |
| Expiry date | Mar 16, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B60/16
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A tennis racket or the like having a slip clutch in the handle of the racket. When a tennis ball strikes on or near the frame to the side of the tennis racket head, there is a tendency for the head of the racket to twist around a longitudinal axis extending through the handle of the racket. The slip clutch permits the head of the racket to rotate relative the handle of the racket to lessen the transmission of shock forces from the head of the racket to the arm of the user of the tennis racket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.