Racquet frames
US4201381A · kind A · utility
1Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1978 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | Mar 13, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2209/023
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention relates to racquet frames. The racquet frame according to the invention comprises thin strips which are glued to one another; the length of at least one strip corresponds to a complete loop of the frame; the width of the strips corresponds to the thickness of the frame in the direction perpendicular to the plane of the frame, and the thickness of the strips corresponds to a fraction of the thickness of the frame in the plane of the frame. The cross-section of the frame preferably possesses at least one recess, and each strip contains high-performance fibres which are orientated longitudinally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.