Racket frame
US4858928A · kind A · utility
6Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1987 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | May 28, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B49/022
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
In construction of a racket frame provided with at least one string protector coupled to the outer peripheral surface of its head, at least one weight adjusting element is removably attached to the outer peripheral surface of the string protector for easy weight adjustment by users even after formation of a face in tension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.