发明名称 |
Fin tab device for marine vessels |
摘要 |
A fin tab device for a marine vessel driven by a propeller is provided with a fin-shaped main fin tab member and a fin-shaped sub-fin tab member, both tab members extending downwardly from a substantially planar fixing portion detachably and adjustably secured to the bottom face of a stern structure. The two tab members are in an in-line, spaced-apart, tandem relation, the sub-fin tab member projecting downwardly a shorter distance than the main fin tab member. The sub-fin tab member is at a positon between the tip circle of the propeller and the main fin tab member. Cavitation bubbles first collide with the sub-fin tab member, imparting impact force thereto, whereby the lower end portion thereof is broken while the main fin tab member is shielded and protected by the sub-fin tab member.
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申请公布号 |
US4831954(A) |
申请公布日期 |
1989.05.23 |
申请号 |
US19870117698 |
申请日期 |
1987.11.06 |
申请人 |
KAWASAKI JUKOGYO KABUSHIKI KAISHA |
发明人 |
KINOUCHI, SOSUKE;YOSHITAKE, HIDETO |
分类号 |
B63H20/32;B63H5/16;B63H20/00;B63H20/34;B63H25/38;B63H25/42 |
主分类号 |
B63H20/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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