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公开(公告)号：US4476529A
公开(公告)日：1984-10-09
申请号：US411349
申请日：1982-08-25
申请人： Keiichi Nakamura , Yutaka Mori , Yoshiharu Inaguma
发明人： Keiichi Nakamura , Yutaka Mori , Yoshiharu Inaguma
CPC分类号： B62D5/09
摘要： A control system for a power steering device of a vehicle, wherein the rotational angular position of a steering wheel, the vehicle driving speed and the steering torque applied to the steering wheel are detected and processed by a digital computer. The computer selects one of plural control values stored in a memory device based upon the detected steering torque and the detected vehicle speed and outputs the selected one of the control values along with solenoid selection data which is determined based upon the detected rotary angular position data. An electric current having a value corresponding to the selected one of the control values is applied from a solenoid drive circuit to one of a pair of solenoids, so that a four-way open center type solenoid valve having the solenoids controls the supply and exhaust of pressurized fluid to and away from a power cylinder of the power steering device in accordance with the detected vehicle driving speed and the detected steering torque.
摘要翻译： 一种用于车辆的动力转向装置的控制系统，其中方向盘的旋转角度位置，车辆行驶速度和施加到方向盘的转向扭矩被数字计算机检测和处理。 计算机基于检测到的转向转矩和检测到的车速选择存储在存储装置中的多个控制值中的一个，并输出所选择的一个控制值以及基于检测到的旋转角位置数据确定的电磁阀选择数据。 具有对应于所选择的一个控制值的值的电流从螺线管驱动电路施加到一对螺线管中的一个，使得具有螺线管的四通开放式电磁阀控制供给和排出 根据检测到的车辆行驶速度和检测到的转向扭矩将动力加压到动力转向装置的动力缸。
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公开(公告)号：US4496288A
公开(公告)日：1985-01-29
申请号：US452136
申请日：1982-12-22
申请人： Keiichi Nakamura , Yoshiharu Inaguma , Yutaka Mori
发明人： Keiichi Nakamura , Yoshiharu Inaguma , Yutaka Mori
CPC分类号： F04C14/226
摘要： A vane type pump with a variable capacity for power steering devices is provided with a movable ring received and radially movable in a closed cylindrical bore of a pump housing. A spring acts on the movable ring to deflect the axis of the movable ring from the axis of a rotor, which is rotated to move vanes along an internal bore of the movable ring. A sealing pin and a valve element are provided at diametrically opposite sides of the movable ring and define first and second pressure chambers around the movable ring. The first pressure chamber receives pressurized fluid from a part of the internal bore of the movable ring and conducts the pressurized fluid into the second pressure chamber through a throttle, which is defined by the valve element and a part of a circumferential external surface of the movable ring. The throttle generates a pressure difference between the first and second pressure chambers, and the pressure difference acts on the movable ring to move the same against the force of the spring. The pump is further provided with a solenoid operated actuator for adjusting the position of the valve element, and a relief valve.
摘要翻译： 具有用于动力转向装置的可变容量的叶片型泵设置有容纳在泵壳体的封闭圆柱形孔中并可径向移动的可移动环。 弹簧作用在可动环上，以使可动环的轴线从转子的轴线偏转，该转子被旋转以沿着可动环的内孔移动叶片。 密封销和阀元件设置在可动环的直径相对的两侧，并且围绕可移动环限定第一和第二压力室。 第一压力室从可移动环的内孔的一部分接收加压流体，并且通过节流阀将加压流体传导到第二压力室中，所述节流阀由阀元件和活动的圆周外表面的一部分 环。 节气门在第一和第二压力室之间产生压力差，并且压力差作用在可动环上以相对于弹簧的力移动。 泵还设置有用于调节阀元件的位置的电磁操作致动器和安全阀。
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公开(公告)号：US5226802A
公开(公告)日：1993-07-13
申请号：US910234
申请日：1992-07-09
申请人： Keiichi Nakamura , Yoshiharu Inaguma , Hideya Kato
发明人： Keiichi Nakamura , Yoshiharu Inaguma , Hideya Kato
CPC分类号： F04C14/26 , F01C21/0863
摘要： A variable-displacement vane pump apparatus is composed of a pump part and a switching valve. The pump part is comprised of a housing, a cam ring, a rotor, plural vanes, side plates, two pairs of intake and exhaust ports formed on the side plates, discharge pressure chambers connecting with the discharge ports, and an intake chamber connected with the intake ports. The pump part is divided into first and second pump portions, and only one of the pump portions is activated by the operation of the switching valve when the load pressure is low. Under such condition, the fluid discharged from the particular pump portion is returned to its intake port. Also, the flow rate of the operation fluid discharged from the pump is adjusted by the flow control valve by returning part of pressurized fluid into the inlet ports. A fluid supplied from a reservoir is energized two times by supercharge effect utilizing the returned fluid from the switching valve and the returned fluid from the flow control valve. The vane pump is further provided with a special arrangement to lower the pressure at the bottoms of slits receiving the vanes at the time period when the slits located in the particular pump portion, thereby reducing the energy loss.
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公开(公告)号：US4798050A
公开(公告)日：1989-01-17
申请号：US60525
申请日：1987-06-11
摘要： A control system for a hydraulic tandem pump assembly including a primary pump for supplying fluid under pressure to a power-assisted steering device and a secondary pump for supplying fluid under pressure to a hydraulic motor of an engine cooling fan, which pumps are mounted on a common drive shaft for rotation therewith. The control system includes an electrically operated flow quantity control valve disposed within a communication passage between the secondary pump and the hydraulic motor to bypass fluid under pressure discharged from the secondary pump into an inlet passage connecting a fluid reservoir to the secondary pump, a temperature sensor arranged to detect an ambient temperature of a prime engine of the vehicle for producing therefrom an output signal indicative of the ambient temperature, and an electric control apparatus connected to the sensor to control an electric current applied to the control valve in response to the output signal from the sensor in such a manner that the control valve is conditioned to bypass a large part or the entirety of fluid under pressure discharged from the secondary pump into the inlet passage when the ambient temperature of the engine is below a predetermined value.
摘要翻译： 一种用于液压串联泵组件的控制系统，包括用于将压力下的流体供应到动力辅助转向装置的主泵和用于将压力下的流体供应到发动机冷却风扇的液压马达的次级泵，所述泵安装在 公共驱动轴与其一起旋转。 控制系统包括电动流量控制阀，其设置在次级泵和液压马达之间的连通通道内，以将从次级泵排出的压力旁通的流体连接到将流体储存器连接到次级泵的入口通道，温度传感器 布置成检测车辆的主引擎的环境温度，从而产生指示环境温度的输出信号，以及连接到传感器的电气控制装置，以响应于输出信号控制施加到控制阀的电流 从传感器以使发动机的环境温度低于预定值时控制阀被调节为绕过从次级泵排出的压力的大部分或全部流体进入入口通道。
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公开(公告)号：US4574905A
公开(公告)日：1986-03-11
申请号：US552067
申请日：1983-11-15
申请人： Hiroaki Asano , Keiichi Nakamura , Yutaka Mori
发明人： Hiroaki Asano , Keiichi Nakamura , Yutaka Mori
摘要： An apparatus for electronically controlling the steering force needed to operate the handle of a vehicle, according to the velocity of the vehicle and the angular displacement of the handle. The apparatus includes a memory for storing various characteristic maps of different steering characteristics, a selecting switch for selecting one of these maps, and a control circuit for applying the electric current depending on the selected map to the solenoid of a flow control means which controls the pressure flow supplied to the power cylinder of a power steering system. The driver of the vehicle can select any desired control pattern from the memory by operating the selecting switch.
摘要翻译： 一种用于根据车辆的速度和手柄的角位移来电动地控制操作车辆手柄所需的转向力的装置。 该装置包括用于存储不同转向特性的各种特征图的存储器，用于选择这些映射之一的选择开关，以及根据选择的映射将电流施加到流量控制装置的螺线管的控制电路， 提供给动力转向系统的动力缸的压力流。 车辆的驾驶员可以通过操作选择开关从存储器中选择任何所需的控制模式。
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公开(公告)号：US4437532A
公开(公告)日：1984-03-20
申请号：US393350
申请日：1982-06-29
申请人： Keiichi Nakamura , Kyosuke Haga , Yutaka Mori
发明人： Keiichi Nakamura , Kyosuke Haga , Yutaka Mori
CPC分类号： B62D6/00
摘要： A steering force control device for a power steering device, wherein various inputs including input and output torques respectively applied to and generated by the power steering device are detected and input to a digital computer. The computer selects one of plural objective output torque values stored in a memory device based upon the various inputs except for the output torque and then, calculates a control output value based upon the detected output torque and the selected objective output torque. The calculated control output value is applied to a linear solenoid valve which is provided in a fluid system of the power steering device, whereby the output torque generated by the power steering device is controlled to follow the selected of the objective output torques.
摘要翻译： 一种用于动力转向装置的转向力控制装置，其中包括分别施加到动力转向装置并由其产生的输入和输出转矩的各种输入被检测并输入到数字计算机。 基于输出转矩以外的各种输入，计算机选择存储在存储装置中的多个目标输出转矩值之一，然后根据检测到的输出转矩和所选择的目标输出转矩来计算控制输出值。 计算出的控制输出值被施加到设置在动力转向装置的流体系统中的线性电磁阀，由此控制由动力转向装置产生的输出扭矩以跟随所选择的目标输出转矩。
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公开(公告)号：US07948735B2
公开(公告)日：2011-05-24
申请号：US12410683
申请日：2009-03-25
申请人： Kazuhiro Nobori , Yutaka Mori , Keiichi Nakamura
发明人： Kazuhiro Nobori , Yutaka Mori , Keiichi Nakamura
IPC分类号： H01L21/683 , H01T23/00 , G03G15/02 , H05F3/00 , B23B31/28
CPC分类号： H01L21/6831 , H02N13/00 , Y10T29/49117 , Y10T279/23
摘要： The electrostatic chuck includes a base including an aluminum nitride-containing member; a dielectric layer formed on the base including a member having a volume resistivity of at least 1×1015 Ω·cm at a temperature range of about 25° C. to about 300° C. and including 2 to 5% by mass of yttrium oxide, 2 to 5% by mass of ytterbium oxide, and a balance of aluminum nitride based on the total mass of the dielectric layer; and an electrode embedded under the dielectric layer so as to be positioned between the dielectric layer and the base, configured to generate an electrostatic absorption force.
摘要翻译： 静电卡盘包括：包含含氮化铝的构件的基座; 形成在基体上的电介质层，包括在约25℃至约300℃的温度范围内体积电阻率为至少1×1015Ω·cm·cm的元件，并且包含2〜5质量％的钇 氧化物，氧化镱为2〜5质量％，余量为基于所述电介质层的总质量的氮化铝; 以及嵌入在所述介质层下方以便被定位在所述介电层和所述基底之间的电极，被配置为产生静电吸收力。
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公开(公告)号：US09719617B2
公开(公告)日：2017-08-01
申请号：US13088460
申请日：2011-04-18
IPC分类号： F16L15/00 , E21B17/042
CPC分类号： F16L15/004 , E21B17/042
摘要： In a threaded joint for steel pipes comprising a pin (1) and a box (2), each having a threaded portion (11 or 21), a sealing surface (13 or 23), and a shoulder surface (14, 15 or 24, 25), the sealing surface (13) of the pin (1) is formed by a tapered surface, and the sealing surface (23) of the box (2) is formed by a first curved surface portion with a large radius of curvature in the range of 15-120 mm, a tapered surface portion, and a second curved surface portion with a large radius of curvature again in the range of 15-120 mm.
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9.发明授权公开(公告)号：US09605781B2
公开(公告)日：2017-03-28
申请号：US12741054
申请日：2008-11-03
申请人： Sylvain Beigneux , Daly Daly , Bertrand Maillon , Claire Patureau , Eric Verger , Michihiko Iwamoto , Keiichi Nakamura , Masaaki Sugino , Suguru Yamaguchi
发明人： Sylvain Beigneux , Daly Daly , Bertrand Maillon , Claire Patureau , Eric Verger , Michihiko Iwamoto , Keiichi Nakamura , Masaaki Sugino , Suguru Yamaguchi
IPC分类号： F16L15/00 , E21B17/042
CPC分类号： F16L15/004 , E21B17/042 , Y10T29/49826 , Y10T82/10 , Y10T408/03 , Y10T409/303752
摘要： A threaded tubular connection includes a female threaded portion at a first tubular component end and a male threaded portion at a second tubular component end, the female threaded portion including a female thread, at least one female sealing surface on its inner peripheral surface, and at least one female axial abutment surface, the male threaded portion including a male thread, at least one male sealing surface on its outer peripheral surface, at least one axial abutment surface, and a lip disposed between the sealing surface and an axial abutment surface located at a free end of the threaded portion distant from the thread, the male thread being made up into the female thread such that at least one male axial abutment surface is in contact with at least one female axial abutment surface, at least one male sealing surface being in interference contact with at least one corresponding female sealing surface, the portion of the lip between the sealing surface and the axial abutment surface being radially distant from a corresponding surface of the other threaded portion, at least one leak channel being provided in one of the threaded portions to place the chamber formed between the lip and the corresponding surface of the other threaded portion in communication with the interior of the connection.
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10.发明授权公开(公告)号：US08995064B2
公开(公告)日：2015-03-31
申请号：US13589156
申请日：2012-08-19
申请人： Keiichi Nakamura
发明人： Keiichi Nakamura
IPC分类号： G02B15/14 , G02B15/173 , G02B27/64
CPC分类号： G02B15/173 , G02B15/14 , G02B27/646
摘要： Disclosed is a zoom lens having a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; a third lens group G3 having positive refractive power; and a fourth lens group G4 having positive refractive power. Upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2 is changed, a distance between the second lens group G2 and the third lens group G3 is changed, and the fourth lens group G4 is moved toward the object first, then moved toward an image. The third lens group G3 has a first positive lens L31, a negative lens L32 and a second positive lens L33, and the fourth lens group G4 has two lenses: L41 and L42.
摘要翻译： 公开了具有正屈光力的第一透镜组G1的变焦透镜; 具有负屈光力的第二透镜组G2; 具有正屈光力的第三透镜组G3; 以及具有正屈光力的第四透镜组G4。 当从广角端状态变焦到望远端状态时，第一透镜组G1与第二透镜组G2之间的距离发生变化，第二透镜组G2与第三透镜组G3之间的距离发生变化， 第四透镜组G4首先朝向物体移动，然后向图像移动。 第三透镜组G3具有第一正透镜L31，负透镜L32和第二正透镜L33，第四透镜组G4具有两个透镜：L41和L42。
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