Rackets
US4346891A · kind A · utility
Inventor
Key dates
| Filing date | Aug 6, 1979 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Aug 6, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2049/0207
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
It is not always easy for a beginner to control the hitting of a ball with a tennis racket. Thus, there is only a small central area known as the sweep spot on which the ball has to impinge if it is to be hit consistently and accurately. The racket of the invention has a head with an elongated oval shape with the major axis of the oval being substantially aligned with the longitudinal axis of the handle and so a sweep spot is provided which is elongated in the direction of the axis of the handle. With such a racket, a beginner can usually hit a ball more accurately and effectively. Preferably, the racket frame has two sides which are substantially straight and parallel to one another and to the axis of the handle. A preferred manner of stringing such a racket is to use two sets of interwoven parallel strings, each set being oriented at an angle of about 45.degree. to the axis of the handle. Such an arrangement has advantages which include the fact that the majority of the strings are of approximately the same length and so can all be tensioned to about the same extent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.