发明名称 Retractable wing keel for sailboats
摘要 This invention pertains to a retractable wing keel for sailboats. A keel member is movably attached to the bottom of the sailboat, and a wing member is attached to the bottom of the keel member. In a first embodiment, the keel member is pivotally attached to the bottom of the sailboat and the wing member is pivotally attached to the bottom of the keel member. In a second embodiment, the keel member is slidably attached to the bottom of the sailboat and the wing member is fixedly attached to the bottom of the keel member.
申请公布号 US6397771(B1) 申请公布日期 2002.06.04
申请号 US20000604015 申请日期 2000.06.26
申请人 LEVI CLARK;MARTIN JAMES B. 发明人 LEVI CLARK;MARTIN JAMES B.
分类号 B63B41/00;(IPC1-7):B63B3/38 主分类号 B63B41/00
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