| 摘要 |
<p>An insert device for application to the intersections of tennis racket strings comprises a body of substantially rigid material adapted to be interposed between two intersecting strings. The body has a pair of mutually perpendicular grooves, each groove being adapted to accommodate a portion of a respective racket string and having a depth such that the portion of string accommodated in the groove does not protrude beyond the adjoining said surface of the body. The walls of each groove are formed with ribs or protuberances for the purpose of gripping a said portion of a racket string accommodated therein.</p> |
