发明名称 Positive drive swim fin.
摘要 <p>The specification herein shows a swimmer's fin (10) having a foot pocket (30) and a blade portion wherein the blade portion is offset from the foot pocket (30) to compensate for the natural supination during a flutter kick, stroke or beat, regardless of whether or not it is a backstroke, kick, or a crawl stroke kick. The fin can be molded in a symmetrical manner so that it can be interchanged between the feet and provided with an offset ankle strap (14) in order to create a more comfortable relationship during the swimming movement. The fin also (10) includes an improved blade end having inner and outer curves wherein the outer curve from the body is of a larger radius than the inner curve. The offset of the foot pocket from the blade can be such wherein the axis of the blade and the axis of the foot pocket intersect within the foot pocket area (12) to provide for improved performance.</p>
申请公布号 EP0337221(A1) 申请公布日期 1989.10.18
申请号 EP19890105765 申请日期 1989.04.01
申请人 MC CARTHY, KEVIN I. 发明人 MCCARTHY, KEVIN I.
分类号 A63B31/11 主分类号 A63B31/11
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