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1. 发明授权

US5759073A Dual propeller system for marine drive 失效
标题翻译：双螺旋桨系统用于船用驱动
公开(公告)号：US5759073A
公开(公告)日：1998-06-02
申请号：US707523
申请日：1996-09-04
申请人： Yoshitsugu Sumino , Ryoji Nakahama
发明人： Yoshitsugu Sumino , Ryoji Nakahama
IPC分类号： B63H1/28 , B63H5/10 , B63H20/14 , B63H20/24 , B63H20/32 , B63H21/32 , F02B61/04
CPC分类号： B63H1/28 , B63H20/245 , B63H5/10 , F02B61/045
摘要： A propulsion system for a marine drive, which includes a pair of counter-rotating propellers, provides improved acceleration from idle or low speeds. Engine exhaust from an engine which powers the marine drive is conveyed to the water about each of the propellers. The exhaust gases aerate the water about each propeller to reduce drag resistance on each propeller. Several embodiments of the propulsion system are disclosed which convey the exhaust gases to both propellers for this purpose.
摘要翻译：用于船用驱动器的推进系统包括一对反向旋转螺旋桨，提供从空转或低速提高的加速度。来自对船舶驱动器供电的发动机的发动机排气被传送到围绕每个螺旋桨的水。废气对每个螺旋桨周围的水进行充气，以减少每个螺旋桨的阻力。公开了推进系统的几个实施例，为此目的将排气输送到两个螺旋桨。

2. 发明授权

US5807151A Propeller for marine propulsion drive 失效
标题翻译：螺旋桨用于船舶推进驱动
公开(公告)号：US5807151A
公开(公告)日：1998-09-15
申请号：US733494
申请日：1996-10-18
申请人： Yoshitsugu Sumino
发明人： Yoshitsugu Sumino
IPC分类号： B63H1/26 , B63H5/10 , B63H20/00 , B63H20/14 , B63H21/32
CPC分类号： B63H20/245 , B63H1/26 , B63H5/10 , B63H2001/185
摘要： A blade design for a counter-rotating propeller system improves the performance of the outboard drive on which is it employed when the propellers are run partially exposed. The propeller system includes a pair of counter-rotating propellers that rotate in opposite directions about a common axis. The rear propeller has a smaller diameter--about 92% of the front propeller--and a total blade face surface area of about 85% of the total blade face surface area of the front propeller. The blades of the front and rear propellers desirably have the same camber and generally the same pitch. The rear propeller pitch is between 90% and 110% of the front propeller pitch. These blade parameters improve the efficiency of the rear propeller over prior designs when the propellers run partially exposed in order to maximize the thrust produced by the propulsion system.
摘要翻译：用于反向旋转螺旋桨系统的叶片设计提高了当螺旋桨运行部分暴露时采用的外部驱动器的性能。螺旋桨系统包括一对相对旋转的螺旋桨，其相对于公共轴线以相反的方向旋转。后螺旋桨具有较小的直径 - 约为前螺旋桨的92％，总叶片表面面积约为前螺旋桨总叶片表面面积的85％。前后螺旋桨的叶片理想地具有相同的弯度并且通常具有相同的间距。后螺旋桨桨距在前螺旋桨桨距的90％和110％之间。这些叶片参数提高后螺旋桨与先前设计的效率，当螺旋桨部分暴露时，为了最大化推进系统产生的推力。

3. 发明授权

US5800223A Marine propulsion device 失效
标题翻译：船用推进装置
公开(公告)号：US5800223A
公开(公告)日：1998-09-01
申请号：US651389
申请日：1996-05-22
申请人： Yasushi Iriono , Yoshitsugu Sumino
发明人： Yasushi Iriono , Yoshitsugu Sumino
IPC分类号： B63H1/26 , B63H5/10 , F02B61/04
CPC分类号： B63H5/10 , B63H1/26 , F02B61/045 , B63H2001/185
摘要： A marine propulsion device improves the handling characteristics and the responsiveness of the watercraft on which it is used. The propulsion device includes a pair of counter-rotating propellers. At least the blades of the front propeller each have a mean camber line in cross-section which has a generally constant radius of curvature. This blade shape reduces cavitations and permits the rear propeller to be mounted closer to the front propeller, and consequently closer to the steering axis of the outboard drive. As a result, steering torque is reduced. The blades of the rear propeller also are not more than thirty percent smaller than the blades of the front propeller, and the average pitches of the propellers do not differ by more than one to four percent. These blade configurations of the front and rear propellers improve the stability of the watercraft when turning, thereby reducing chine walk, as well as improve the responsiveness of the watercraft.
摘要翻译：船用推进装置改善了使用它的船舶的处理特性和响应性。推进装置包括一对反向旋转螺旋桨。至少前螺旋桨的叶片各自具有横截面的平均弯度线，其具有大致恒定的曲率半径。这种叶片形状减少了空化，并允许后部螺旋桨安装得更靠近前螺旋桨，并且因此更靠近外侧驱动装置的转向轴线。结果，转向转矩降低。后螺旋桨的叶片也不比前螺旋桨的叶片小三成，螺旋桨的平均桨距差别不超过百分之四到百分之四。前后螺旋桨的这些叶片配置提高了船舶在转动时的稳定性，从而减少了河道行走，并提高了船舶的响应性。

4. 发明授权

US4578040A Fish line entering prevention device for marine propeller 失效
标题翻译：鱼线进入船用螺旋桨预防装置
公开(公告)号：US4578040A
公开(公告)日：1986-03-25
申请号：US614880
申请日：1984-05-29
申请人： Yoshitsugu Sumino , Hiroshi Harada
发明人： Yoshitsugu Sumino , Hiroshi Harada
IPC分类号： B63H1/20 , B63H5/16 , B63H21/32 , B63H23/32 , F01N13/12 , B63H1/28
CPC分类号： B63H5/165
摘要： Several embodiments of propeller constructions employing an improved fish line and weed cutting device that extends into a recess formed in the lower housing. In each embodiment, the cutting member is disposed radially inwardly of the recess to define a gap and one or more projections extend outwardly from the cutting member to fill the gap and define a narrow area that will prevent the entry of fish lines into the opening of the lower unit that defines the recess.
摘要翻译：使用改进的鱼线和杂草切割装置的螺旋桨结构的几个实施例延伸到形成在下壳体中的凹部中。在每个实施例中，切割构件设置在凹部的径向内侧以限定间隙，并且一个或多个凸起从切割构件向外延伸以填充间隙并限定窄区域，其将防止鱼线进入限定凹部的下部单元。

5. 发明授权

US5310371A Tandem propeller assembly for a marine propulsion unit 失效
标题翻译：用于船用推进装置的串联螺旋桨组件
公开(公告)号：US5310371A
公开(公告)日：1994-05-10
申请号：US935416
申请日：1992-08-26
申请人： Yasushi Iriono , Yoshitsugu Sumino , Mitsunori Suzuki , Hiroshi Harada
发明人： Yasushi Iriono , Yoshitsugu Sumino , Mitsunori Suzuki , Hiroshi Harada
IPC分类号： B63H1/26 , B63H5/10 , B63H20/00 , B63H23/34 , F02B61/04 , B63H1/14
CPC分类号： B63H20/20 , B63H23/34 , B63H5/10 , F02B61/045 , B63H2005/103 , B63H2020/006 , B63H2023/342
摘要： A tandem propeller assembly for use with a marine propulsion unit is disclosed wherein a single shock-absorber assembly is utilized to assure damping effects for both propellers so as to protect the propulsion system from being damaged when either propeller is obstructed by drifting wood or other debris. Each of the preferred embodiments disclosed provides a simple structure for absorbing impacts upon either propeller in a tandem propeller assembly while minimizing any increase in the surface area of contact with the water which would increase the propulsion resistance and would result in speed loss.
摘要翻译：公开了一种与船用推进装置一起使用的串联螺旋桨组件，其中使用单个减震器组件来确保两个螺旋桨的阻尼效果，以便当螺旋桨被漂移的木材或其他碎片阻挡时，保护推进系统免受损坏。所公开的每个优选实施例提供了一种用于吸收在串联螺旋桨组件中的任一螺旋桨上的冲击的简单结构，同时最小化与水接触的表面积的任何增加，这将增加推进阻力并且将导致速度损失。

6. 发明授权

US4609361A Fish line and weed cutter for marine propeller 失效
标题翻译：鱼线和海洋螺旋桨杂草切割机
公开(公告)号：US4609361A
公开(公告)日：1986-09-02
申请号：US580150
申请日：1984-02-14
申请人： Yoshitsugu Sumino , Hiroichi Mizuno
发明人： Yoshitsugu Sumino , Hiroichi Mizuno
IPC分类号： B63H21/32 , B63H5/16 , B63H23/32 , B63H1/28
CPC分类号： B63H5/165
摘要： A fish line and weed cutting arrangement for a marine propulsion lower unit wherein the cutting member may be formed from sheet metal or the like and is positioned between the propeller and thrust taking member. The propeller is formed with a recess that receives and rotatably couples the fish line and weed cutting member and which does not interfere with the axial positioning of the propeller on the drive shaft.
摘要翻译：用于船舶推进下部单元的鱼线和杂草切割装置，其中切割构件可以由金属板等形成并且位于螺旋桨和推力承载构件之间。螺旋桨形成有凹部，其容纳并可旋转地联接鱼线和杂草切割构件，并且不干扰螺旋桨在驱动轴上的轴向定位。

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