| 摘要 |
<p>A game racket frame of fiber reinforced plastic comprises a head formed of an oval main body 20 which is composed of a first inner tube 22, a second inner tube 24, and an outer tube 26. The inner tubes are arranged side by side in the direction toward the head face of the game racket such that the adjoining walls of the inner tubes are attached for forming cross ribs 30 in the main body, and that the outer walls of the inner tubes are intimately attached to the inner wall of the outer tube. The main body is further provided with a plurality of string holes 28 extending through the main body in the direction toward the head face of the game racket. The sideway structural strength of the main body is thus reinforced by the cross ribs 30 formed at the junctions of the laminated inner tubes. In an alternative embodiment (Fig 5) the head body may be formed from three laminated inner tubes (42, 44, 46).</p> |
