发明名称 |
Boat propulsion unit with a propulsion propeller arranged under the boat's bottom |
摘要 |
A boat propulsion unit has a propeller which can be withdrawn into a sleeve to a position above the plane of the boat's bottom and enclosed by a cover plate. The water in the closed sleeve can be pumped out, so that the emptied sleeve is accessible for inspection and maintenance operations.
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申请公布号 |
US5397255(A) |
申请公布日期 |
1995.03.14 |
申请号 |
US19940202966 |
申请日期 |
1994.02.28 |
申请人 |
SCHOTTEL-WERFT JOSEF BECKER GMBH & CO., KG |
发明人 |
HEER, MANFRED |
分类号 |
B63H20/00;B63B17/00;B63H5/125;B63H25/42;F16J15/46;(IPC1-7):B63H5/12 |
主分类号 |
B63H20/00 |
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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