| 摘要 |
<p>A novel dart (10) is equipped with a dart point contraction system which allows the dart point (14) to contract into the body (11) or barrel of the dart as when the dart point (14) impacts wire, or staples and the like which surmount boundaries of denominated regions of a dartboard. The dart body (11) defines a cylindrical cavity (33) into which the downstream end of the dart point (14) can reciprocatingly travel since it also is cylindrical and comes to rest against the dart body (11) at the end of its travel. It is as a result of the kinetic energy of flight that even though the dart point (14) may have impacted a boundary wire or even a denominated region of the dartboard, that 'bounce-out' is inhibited by the cylindrical portion (20) of the dart point (14) travelliing in the cylindrical cavity (33) of the dart body (11) when impact occurs.</p> |
