Ball game e.g. tennis, racket, has frame formed by hollow profile member embodying two concavities, which are symmetrical about longitudinal axis of racket in core region, and vibrating device is arranged in each of two concavities

摘要

The racket (2) has a frame (16) formed by a profiled frame or a hollow profiled member, a racket head (4) and a handle section (6) that is connected via core region (8). The two concavities (12), which are symmetrical about the longitudinal axis (10) of the racket, are embodied in the core region on the frame. A vibrating device (20) is arranged in each of the two concavities.