发明名称 Contoured paddle for water sports
摘要 An improved paddle for use with shallow draft watercraft, including kayaks, canoes, rafts, and the like, having a paddle blade with surface topography for geometrically channeling water across the surface of the blade when in use so as to reduce user fatigue and increase efficiency. A second embodiment of said paddle incorporates a crooked loom to increase leverage applied to said paddle blade by altering the stroke force from 90 degrees to 45 degrees.
申请公布号 US6254444(B1) 申请公布日期 2001.07.03
申请号 US19990387541 申请日期 1999.08.30
申请人 NORDBY WILLARD E. 发明人 NORDBY WILLARD E.
分类号 B63H16/04;(IPC1-7):B63H16/04 主分类号 B63H16/04
代理机构 代理人
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