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    • 1. 发明授权
    • Power boat with extended propeller pocket
    • 动力船与扩展螺旋桨口袋
    • US4383828A
    • 1983-05-17
    • US287270
    • 1981-07-27
    • James R. Wynne
    • James R. Wynne
    • B63B17/00B63H5/16
    • B63B1/08B63H5/16Y02T70/128
    • A boat includes a transom with an inboard engine disposed closely adjacently forward of the transom, a straight propeller shaft extends rearwardly and downwardly from such engine into a propeller pocket or tunnel extending from a smooth entrance end with respect to the bottom adjacent the transom, the shaft carrying a screw propeller disposed aft of the transom. The propeller pocket terminates rearwardly aft of the propeller and the transom. The tunnel and propeller are completely submerged below the at-rest waterline and the aft extension of the tunnel connects with aft extensions of the bottom to form a bottom extension generally the full width of the boat adjacent the transom. This bottom extension increases the lift of the boat if the tunnel does not interrupt the bottom, and if the tunnel does interrupt the bottom, the bottom extension compensates for the reduction of lift caused by the tunnel portion in the bottom, and a diving platform also extends across such full width above such bottom extension.
    • 船包括具有与艉板紧密相邻设置的内侧发动机的艉板,从该发动机向后和向下延伸的螺旋桨袋或隧道相对于邻近艉板的底部的平滑入口端延伸, 轴上装有一个安装在艉板后面的螺旋桨。 推进器口袋在螺旋桨和艉板后方向后方终止。 隧道和螺旋桨完全浸没在静止水线之下,隧道的后延伸部分与底部的后延伸部分连接,形成底部延伸部分,大体上横跨船尾的船体的全宽度。 如果隧道不中断底部,则该底部延伸增加了船的升力,并且如果隧道确实中断了底部,则底部延伸部补偿了由底部的隧道部分引起的升力的减少,以及潜水平台 延伸穿过这种底部延伸部分的这样的全宽。