发明名称 Tow rope pylon with rotatable bushing
摘要 A pylon for a tow rope for water skiing and the like includes a bushing rotatably mounted on the upper end of the pylon for reducing friction between the tow rope and the pylon. The bushing includes a cylindrical central portion and radially enlarged upper and lower ends for maintaining the tow rope on the central portion. A rod on the upper end of the pylon extends through an opening in the bushing, and a cap is threadedly attached to the rod for retaining the bushing on the rod.
申请公布号 US4893577(A) 申请公布日期 1990.01.16
申请号 US19880195589 申请日期 1988.05.18
申请人 MASTERCRAFT BOAT CO. 发明人 JENNINGS, MICHAEL D.
分类号 B63B21/56;B63B35/81 主分类号 B63B21/56
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