Structure of racket
US5100136A · kind A · utility
Inventor
Key dates
| Filing date | Nov 23, 1990 |
| Grant date | Mar 31, 1992 |
| Priority date | — |
| Expiry date | Nov 23, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B60/52
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A racket comprises a head frame having a catgut string threaded therethrough to form a striking surface therein, and a handle extending from the throat portion of the head frame. The head frame has at least one elongate, penetrating aperture formed thereon, with each aperture being separated from the outer periphery thereof by a pair of aligned ribs disposed to either side of the plane of the striking surface to define a receiving space therein. An elongate, elastic element having a generally T-shaped cross-section can be mounted in each receiving space with a central longitudinal protrusion thereon resting between the ribs. The elastic elements serve to adjust the weight and balance of the racket and absorb concomitant shock generated by the impact of a ball with the striking surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.