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专利名称：Darts发明人：Colin J. Paxman申请号：US06/432363申请日：19820930公开号：US04457514A公开日：19840703
摘要：A dart comprises a point portion 1, a barrel portion 2, a shaft 3 and a flight 4.The point portion 1 is detachably secured within the barrel portion 2 by a screw thread 8provided at one end of the point portion 1 and a corresponding screw thread provided atone end 9 of the barrel portion 2. The shaft 3 is detachably secured to the other end ofthe barrel at 11 by screw thread 12. This enables the point or the shaft to be selectivelyconnected with either end of the barrel whereby the dart may be made to have twodifferent flight characteristics. In a second embodiment the barrel has different sizescrew threads at each end, and two points and two shafts are provided. One shaft andone point have a screw to match one end of the barrel and the other shaft and point havescrew threads to match the other end of the barrel. The barrel of both embodiments hasan asymmetrical longitudinal shape.
申请人：PAXMAN; COLIN J.
代理人：Emory L. Groff, Jr.
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