| 摘要 |
A shuttlecock is described having a base and a plastics conical skirt (10). The skirt comprises, at its end narrower adjacent the base, a stem portion (12) formed of a plurality of longitudinally extending stems (16) and, at its wider end a flight portion (14) within which a web extends between the individual stems to increase the aerodynamic drag on the shuttle. An annular reinforcement rib (22) or (30) extends between the stems (16) at the junction between the stem and flight portions of the skirt. The reinforcement rib (22) or (30) protrudes from the stems (16) into the interior of the skirt (10) and has a smaller inside diameter at its tip than points on the inner surface of the flight portion nearer to the base. This is facilitated by forming the skirt from two initially separate conical-conical components. |
