发明授权
- 专利标题: Jet pump system for a water jet propelled boat
- 专利标题(中): 用于喷水推进船的喷射泵系统
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申请号: US162253申请日: 1993-12-07
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公开(公告)号: US5401198A公开(公告)日: 1995-03-28
- 发明人: Makoto Toyohara , Hiroshi Tasaki
- 申请人: Makoto Toyohara , Hiroshi Tasaki
- 申请人地址: JPX Shizuoka
- 专利权人: Sanshin Kogyo Kabushiki Kaisha
- 当前专利权人: Sanshin Kogyo Kabushiki Kaisha
- 当前专利权人地址: JPX Shizuoka
- 优先权: JPX3-149486 19910524
- 主分类号: B63H11/10
- IPC分类号: B63H11/10 ; B63H11/103
摘要:
A jet pump system for a water jet propelled boat is disclosed that provides for the adjustment of the area of the water intake opening or the water entry angle as a function of the speed of the boat. During low speed operation, the water inlet opening is adjusted to a maximum area, or the water entry angle is adjusted to a maximum angle to enable sufficient water to enter the water duct and permit efficient impeller operation. As the boat speed increases beyond a predetermined speed, the water inlet area is reduced, or the water inlet angle is reduced to prevent excess water from entering the water duct, thereby reducing the drag on the boat.
公开/授权文献
- US4914773A Cleaning apparatus 公开/授权日:1990-04-10