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1. 发明授权

US5231912A Bent axis type variable displacement hydraulic machine 失效
标题翻译：弯轴式可变排量液压机
公开(公告)号：US5231912A
公开(公告)日：1993-08-03
申请号：US968682
申请日：1992-10-30
申请人： Yoshimichi Akasaka , Ichiro Nakamura , Yasuharu Gotoh
发明人： Yoshimichi Akasaka , Ichiro Nakamura , Yasuharu Gotoh
IPC分类号： F04B1/20 , F04B1/24
CPC分类号： F04B1/24 , F04B1/2085
摘要： A bent-axis type variable displacement hydraulic machine provided with one of a hydrostatic radial bearing and a hydrostatic thrust bearing to support hydraulic reaction forces exerted on a cylinder block. The hydraulic machine is adapted to draw out a high oil pressure corresponding to a tilt angle of the cylinder block through a variable throttle means or through a control valve, and to supply the pressure of the hydrostatic radial or thrust bearing to thereby impart a hydrostatic supporting capacity commensurate with a tilt angle of the cylinder block and stably support a rotational shaft while minimizing oil leaks.
摘要翻译：一种弯轴式可变排量液压机，设有静压径向轴承和静压推力轴承之一，以支撑施加在气缸体上的液压反作用力。液压机适于通过可变节流装置或通过控制阀抽出对应于气缸体的倾斜角的高油压，并提供静压径向或止推轴承的压力，从而赋予静压支撑容量与气缸体的倾斜角相当，并且在最小化油泄漏的同时稳定地支撑旋转轴。

2. 发明授权

US5182978A Bent axis type variable displacement hydraulic machine 失效
标题翻译： BENT AXIS型变量液压机械
公开(公告)号：US5182978A
公开(公告)日：1993-02-02
申请号：US460066
申请日：1990-01-30
申请人： Yoshimichi Akasaka , Ichiro Nakamura , Yasuharu Gotoh
发明人： Yoshimichi Akasaka , Ichiro Nakamura , Yasuharu Gotoh
IPC分类号： F03C1/06 , F03C1/253 , F03C1/26 , F03C1/38 , F04B1/20 , F04B1/24 , F16C32/06 , F16H39/14
CPC分类号： F04B1/24 , F04B1/2085
摘要： Described is a bent axis type variable displacement hydraulic machine which is provided with a hydrostatic radial bearing 23 and/or a hydrostatic thrust bearing 28 to support hydraulic reaction forces exerted on a cylinder block 8. The hydraulic machine is arranged to draw out a high oil pressure corresponding to the tilt angle of the cylinder block 8 through a variable throttle means 34, 37, 51 or 54 or through a control valve 77 or 78, and to supply the pressure to the hydrostatic radial or thrust bearing 23 or 28 thereby imparting to a hydrostatic supporting capacity commensurate with the tilt angle of the cylinder block 8 to support a rotational shaft stably while holding oil leaks to a minimum.
摘要翻译： PCT No.PCT / JP89 / 01007 Sec。 371 1990年1月30日第 102（e）1990年1月30日PCT PCT 1989年10月3日PCT公布。第WO90 / 04101号公报日期：1990年04月19日。描述了一种弯轴式可变排量液压机，其设有静压径向轴承23和/或静压推力轴承28，以支撑施加在气缸体8上的液压反作用力。液压机是布置成通过可变节流装置34,37,51或54或通过控制阀77或78抽出对应于气缸体8的倾斜角的高油压，并将压力提供给静压径向或推力轴承23或28，从而赋予与气缸体8的倾斜角相当的静压支撑能力，以在将油泄漏保持在最小的同时稳定地支撑旋转轴。

3. 发明授权

US4788902A Thrust hydrostatic bearing device for use in axial piston machine 失效
标题翻译：推力静压轴承装置用于轴向活塞机
公开(公告)号：US4788902A
公开(公告)日：1988-12-06
申请号：US88415
申请日：1987-08-24
申请人： Yoshimichi Akasaka , Ichiro Nakamura , Ken Ichiryu , Eiji Kometani , Yasuharu Gotoh
发明人： Yoshimichi Akasaka , Ichiro Nakamura , Ken Ichiryu , Eiji Kometani , Yasuharu Gotoh
IPC分类号： F04B1/24 , F04B1/20 , F16C32/06 , F01B13/04
CPC分类号： F16C32/0666 , F04B1/2085
摘要： A thrust hydrostatic bearing device for use in an axial piston machine includes a bearing sleeve fitted into a housing cover for rotatably supporting a drive shaft through a bearing and having a plurality of hydrostatic pads. The hydrostatic pads are disposed at locations which are symmetrical with respect to an axis lying in a cross-section taken perpendicular to the drive shaft, and these pads increase the performance and durability of the thrust hydrostatic bearing device for use in an axial piston machine.
摘要翻译：用于轴向活塞机的推力静液压轴承装置包括装配到壳体盖中的轴承套，用于通过轴承可旋转地支撑驱动轴并具有多个静压垫。静压垫设置在相对于垂直于驱动轴的横截面中的轴对称的位置处，并且这些垫增加了用于轴向活塞机的推力静压轴承装置的性能和耐久性。

4. 发明授权

US5094144A Bent axis type variable displacement hydraulic machine 失效
标题翻译： BENT AXIS型变量液压机械
公开(公告)号：US5094144A
公开(公告)日：1992-03-10
申请号：US552521
申请日：1990-07-16
申请人： Yoshimichi Akasaka , Ichiro Nakamura , Yasuharu Gotoh
发明人： Yoshimichi Akasaka , Ichiro Nakamura , Yasuharu Gotoh
IPC分类号： F04B1/24 , F01B3/00 , F01B3/02 , F03C1/24 , F03C1/253 , F03C1/26 , F04B1/20
CPC分类号： F04B1/2085 , F01B3/0032 , F01B3/02
摘要： A bent axis type variable displacement hydraulic machine employing hydrostatic radial bearings for supporting hydraulic reaction forces exerted on the cylinder block. In a hydraulic machine of this sort, the number of pistons which are located in the high pressure are varies with the rotation of the cylinder block, and the resultant force of hydraulic reaction forces has an acting point at a position off the axis of the rotational shaft. Therefore, the hydrostatic radial bearings are located in such positions as to balance the moment loads which occur about the rotational shaft in relation with the acting point of the resultant force of radial hydraulic reaction forces on the drive disc of the rotational shaft. As a result, it becomes possible to lead to suppression of oil leaks from the sliding surfaces to a minimal rate and to prevent abnormal abrasive wear of each of the sliding surfaces.
摘要翻译：一种用于支撑施加在气缸体8上的液压反作用力的静压径向轴承（20; 31; 47）的弯轴式可变排量液压机。在这种液压机（8）中，（10）高压的位置随着气缸体（8）的旋转而变化，并且液压反作用力的合力具有离开旋转轴（5; 45）轴线的位置的作用点。因此，静压径向轴承（20; 31; 47）位于这样的位置，以平衡与旋转轴（5; 45）相对于径向液压反作用力的合力作用点发生的力矩负载在旋转轴（5; 45）的驱动盘（6; 46）上。结果，能够将从滑动面（12）的油泄漏抑制到最小的速度，并且能够防止各滑动面（12）的异常磨损。

5. 发明授权

US4428559A Direct drive type servo valve 失效
标题翻译：直驱型伺服阀
公开(公告)号：US4428559A
公开(公告)日：1984-01-31
申请号：US267914
申请日：1981-05-28
申请人： Ken Ichiryu , Haruo Watanabe , Ichiro Nakamura , Yoshimichi Akasaka
发明人： Ken Ichiryu , Haruo Watanabe , Ichiro Nakamura , Yoshimichi Akasaka
IPC分类号： F15B13/044 , F15B13/04 , F16K11/07 , F16K31/04
CPC分类号： F15B13/04 , F16K11/0704 , Y10T137/86622
摘要： A direct drive type servo motor in which a spool is driven directly by a force motor, the force of the force motor being balanced by the reactional force generated by a resilient member to stabilize the position of the spool to control the flow of working fluid. The resilient member is constituted by a metallic cylindrical member having holes formed in the outer peripheral surface thereof. The holes are arranged such that, when the force is applied to the cylindrical member in the axial direction, the cylindrical member produces an axial reactional force. In consequence, the generation of force component which would act to press the spool against the sleeve is avoided to reduce the friction between the spool and the sleeve to permit a smooth movement of the spool, while allowing the resilient member to have a high spring constant to improve the response characteristic of the servo valve.
摘要翻译：一种直接驱动型伺服电动机，其中线轴由力马达直接驱动，力马达的力由弹性构件产生的反作用力平衡，以稳定卷轴的位置以控制工作流体的流动。弹性构件由在其外周面形成有孔的金属圆筒构件构成。这些孔被布置成使得当沿轴向方向将力施加到圆柱形构件时，圆柱形构件产生轴向反作用力。因此，避免了将作用以将线轴压靠套筒的力分量的产生，以减小线轴和套筒之间的摩擦，以允许线轴的平稳移动，同时允许弹性构件具有高的弹簧常数提高伺服阀的响应特性。

6. 发明授权

US4404892A Hydraulic operating apparatus 失效
标题翻译：液压操作装置
公开(公告)号：US4404892A
公开(公告)日：1983-09-20
申请号：US217844
申请日：1980-12-18
申请人： Ichiro Nakamura , Mitsuaki Takenoshita , Ken Ichiryu , Yoshimichi Akasaka , Haruo Watanabe
发明人： Ichiro Nakamura , Mitsuaki Takenoshita , Ken Ichiryu , Yoshimichi Akasaka , Haruo Watanabe
IPC分类号： H01H33/34 , F15B15/22
CPC分类号： H01H33/34 , H01H2033/308
摘要： A hydraulic operating apparatus including an actuating cylinder having a piston arranged therein and moved by a fluid under high pressure further includes a control valve having only one metallic seal whether the piston is at its upper or lower positions. The control valve is operative to apply the fluid under high pressure to a pressure receiving surface of the piston on the opposite side of a piston rod to move the piston in a direction in which the piston rod extends from the piston and to discharge the fluid existent on the opposite side of the piston rod from the actuating cylinder to move the piston in a direction opposite the direction in which the piston rod extends from the piston. The hydraulic operating apparatus further includes a seal for dividing the pressure receiving surface of the piston on the opposite side of the piston rod into first and second pressure receiving surface sections, the first pressure receiving surface section having an effective pressure receiving area smaller than that of a pressure receiving surface of the piston on the side of the piston rod.
摘要翻译：包括具有布置在其中并由高压下的流体移动的活塞的致动缸的液压操作装置还包括仅活塞处于其上部或下部位置的只有一个金属密封件的控制阀。控制阀可操作以将高压流体施加到活塞杆的相对侧上的受压表面，以使活塞沿活塞杆从活塞延伸的方向移动并排出存在的流体在活塞杆的与驱动气缸相反的一侧上，使活塞沿与活塞杆从活塞延伸的方向相反的方向移动。液压操作装置还包括用于将活塞杆的相对侧的活塞的受压面分成第一和第二受压面部分的密封件，第一受压面部分的有效压力接收面积小于在活塞杆一侧的活塞的受压面。

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