Valve operating system for internal combustion engines
    1.
    发明授权
    Valve operating system for internal combustion engines 失效
    内燃机阀门操作系统

    公开(公告)号:US4883027A

    公开(公告)日:1989-11-28

    申请号:US276403

    申请日:1988-11-23

    IPC分类号: F01L1/26 F01M9/10 F01L1/34

    摘要: A drive cam follower operatively connected to an engine valve and a free cam follower capable of becoming free relative to the engine valve are adjacently disposed and adapted to impart in mutually different modes of operation in response to said engine valve rotation of a cam shaft. A connection change-over mechanism is provided between the cam followers and is capable of changing-over the interconnection and disconnection thereof, and resilient biasing means is provided between the free cam follower and the engine body for resiliently urging the free cam follower toward the cam shaft. The resilient biasing means comprises an urging piston slidably received in the engine body for abutment against the free cam follower, and a spring arrangement interposed between the urging piston and the engine body to resiliently bias the urging piston in a direction to abut against the free cam follower. The spring arrangement may comprise series-related springs having different spring constant with one of the springs having a non-linear load characteristic. A vent opening and a lubrication arrangement are provided to facilitate operation of the piston. The urging piston is provided, at its end closer to the free cam follower, with an abutment formed with a smaller diameter to abut against the free cam follower. This facilitates assembly of the resilient biasing means to the engine body, and makes it possible to dispose the resilient biasing means in proximity to a pivoting point of the free cam follower.

    Valve operating system for internal combustion engines
    2.
    发明授权
    Valve operating system for internal combustion engines 失效
    内燃机阀门操作系统

    公开(公告)号:US4911112A

    公开(公告)日:1990-03-27

    申请号:US290171

    申请日:1988-12-27

    IPC分类号: F01L1/26

    CPC分类号: F01L1/267

    摘要: A valve operating system for internal combustion engines comprises a free cam follower which is disposed between first and second drive cam followers operatively connected to engine valves and which is capable of becoming free relative to the engine valves, first and second guide holes respectively provided in the first and second drive cam followers with their axes corresponding to each other. The guide holes is opened to the free cam follower. A double open-ended guide hole is provided in the free cam follower in correspondence to the axes of the first and second guide holes. A first change-over pin is axially slidably received in the first guide hole and adapted to be fitted into the guide hole, and a second change-over pin is axially slidably received in said guide hole with one end thereof abutting against the first change-over pin, and is adapted to be fitted into said second guide hole. A restricting pin is axially slidably received in said second guide hole while being spring-biased toward said second change-over pin, with one end thereof abutting against the other end of said second change-over pin. This construction ensures that fitting of the first change-over pin into the guide hole as well as fitting of the second change-over pin into the second guide hole can be reliably performed.

    Valve train for internal combustion engine

    公开(公告)号:US06644254B2

    公开(公告)日:2003-11-11

    申请号:US10045050

    申请日:2002-01-15

    IPC分类号: F01L1300

    CPC分类号: F01L1/267 F01L1/024

    摘要: A valve train for an internal combustion engine includes a rocker shaft (9) provided with an oil passage, first and second rocker arms (7, 8) having support parts (7a, 8a) provided with bores (7b, 8b) to receive the rocker shaft (9) therein so as to be supported on the rocker shaft (9) for rocking motion, and a rocker arm interlocking mechanism (10) for selectively engaging or disengaging the first and the second rocker arms (7, 8). The first rocker arm (7) is provided with a pressure chamber (33) holding a piston (30) therein, a straight connecting passage 34 connected to the pressure chamber (33) and an oil passage (35)formed in the rocker shaft (9). An open end surface (7b1) of the bore (7b) of a first support wall (7e) of the rocker arm (7) is on an axially outer side of the pressure chamber (33). The straight connecting passage (34) is inclined to the axis of the bore (7b) so that an imaginary passage (39) on an extension of the connecting passage (34) extended toward the open end surface (7b1) intersects the open end surface (7b1). The outermost side surface (7e1) of the first support wall (7e) has an inclined section inclined to the axis of the bore (7b) along the connecting passage (34).

    Ankle-foot orthosis prescription assistive device
    4.
    发明授权
    Ankle-foot orthosis prescription assistive device 有权
    踝足矫形器处方辅助装置

    公开(公告)号:US08197425B2

    公开(公告)日:2012-06-12

    申请号:US12618096

    申请日:2009-11-13

    IPC分类号: A61B5/103 A61B5/117 A61B5/04

    摘要: A measurement device (10) for quantitatively measuring stiffness, torque or range of motion (ROM) around the joint axis of the ankle-foot complex of a lower limb in the sagittal and coronal planes, the device (10) comprising: a plate (13, 21) for placement of the ankle-foot complex, the plate (13, 21) operatively connected to an actuator (14, 16) for manual actuation; an angular measurement device (12, 17) to measure an angular position of the ankle-foot complex; a torquemeter (11) to measure resistance torque of the ankle-foot complex; an electromyograph (48) to monitor muscular activity of muscles of the lower limb; and computer software to record the measured angular position, resistance torque of the ankle-foot complex and EMG of the lower limb muscles.

    摘要翻译: 一种用于定量测量在矢状面和冠状面中的下肢踝足复合体的关节轴线周围的刚度,扭矩或运动范围的测量装置(10),所述装置(10)包括:板( 13,21),用于放置脚踝复合体,板(13,21)可操作地连接到用于手动致动的致动器(14,16); 用于测量踝足复合体的角位置的角度测量装置(12,17); 扭力计(11)测量踝足复合体的阻力矩; 用于监测下肢肌肉的肌肉活动的肌电图(48); 和计算机软件记录测量的角位置,踝足复合体的阻力矩和下肢肌肉的EMG。

    Construction for a cam rotation sensor attaching portion
    5.
    发明授权
    Construction for a cam rotation sensor attaching portion 失效
    凸轮旋转传感器安装部的结构

    公开(公告)号:US06481270B1

    公开(公告)日:2002-11-19

    申请号:US09651312

    申请日:2000-08-31

    IPC分类号: G01M1500

    摘要: There is provided a construction for a cam rotation sensor attaching portion where a cam rotation sensor is attached which detect the rotation angles of camshafts (1, 3) supported on cam holders (lower cam holder 12, upper cam holder 13), the construction being characterized in that portions to be detected (projections 18) are provided on thrust plates (17) fixed to axial ends of the camshafts so as to be brought into abutment with an axial end face (a thrust receiving face 31) of the cam holder for regulating axial positions of the camshafts, and that a sensor (a proximity sensor 23) for detecting the passage of the portions to be detected from an axial direction of the camshafts is attached to a member (a sensor attaching wall 20) which is integrated into the cam holder. According to this construction, since the relative positioning accuracy between the portions to be detected and the sensor attaching portion with respect to the axial direction of the camshafts can easily be improved, a high detection accuracy can be obtained. Moreover, since the sensor and the head cover can be attached to and detached from the cylinder head without affecting each other, the maintenance and servicing properties thereof can be enhanced.

    摘要翻译: 提供一种用于凸轮旋转传感器安装部分的结构,其中安装有凸轮旋转传感器,其检测支撑在凸轮保持器(下凸轮保持器12,上凸轮保持器13)上的凸轮轴(1,3)的旋转角度,该结构为 其特征在于,被检测部分(突起18)设置在固定在凸轮轴的轴向端部的止推板(17)上,以与凸轮轴的轴向端面(推力接收面31)邻接 调节凸轮轴的轴向位置,并且用于检测从凸轮轴的轴向方向通过待检测部分的传感器(接近传感器23)附接到一体成型(传感器安装壁20) 凸轮架。 根据该结构,能够容易地提高检测部与传感器安装部之间相对于凸轮轴的轴向的相对定位精度,能够获得高的检测精度。 此外,由于传感器和头盖可以与气缸盖相连接和拆卸而不会相互影响,所以可以提高其维护和维修性能。

    Drain recovery system for condensate feedwater system of nuclear power
plant
    7.
    发明授权
    Drain recovery system for condensate feedwater system of nuclear power plant 失效
    核电站冷凝水给水系统排水回收系统

    公开(公告)号:US4713209A

    公开(公告)日:1987-12-15

    申请号:US852315

    申请日:1986-04-15

    CPC分类号: G21D5/12 G21D1/02 Y02E30/40

    摘要: A drain recovery system for the condensate feedwater system of a nuclear power plant having condensate pumps for boosting the condensate from a condenser, and feedwater heaters for heating the condensate from the condensate pumps. The drain recovery system is provided with drain pumping-up recovery having a drain tank for storing a feedwater heater drain, and drain pumps connected to the drain tank for pumping up the drain therein to inject it into said condensate feedwater system at a predetermined portion thereof, and drain level control device having a conduit connected between a portion of the drain pumping-up recovery system upstream of the drain pumps and a portion of the condensate feedwater system upstream of the condensate pumps for causing the drain in the drain tank to be returned to the portion upstream of the condensate pumps by a pressure differential therebetween so as to maintain a drain level in the drain tank at a predetermined position when the plant operates at a low load level or the drain pumps malfunction.

    摘要翻译: 用于具有用于从冷凝器提升冷凝物的冷凝水泵的核电站的冷凝水给水系统的排水回收系统以及用于从冷凝水泵加热冷凝物的给水加热器。 排水回收系统具有排水排空回收装置,其具有用于储存给水加热器排水的排水箱,以及连接到排水箱的排水泵,用于向其排出排水口,以将其排出到其预定部分的所述冷凝水给水系统 和排水平面控制装置,其具有连接在排水泵上游的排水泵送回收系统的一部分和冷凝水泵上游的冷凝物给水系统的一部分之间的导管,用于使排水箱中的排水口返回 通过它们之间的压力差到冷凝水泵的上游部分,以便当设备在低负载水平下操作或排水泵故障时,将排水槽中的排放水平保持在预定位置。

    Support device for rocker arm
    9.
    发明授权
    Support device for rocker arm 失效
    摇臂支撑装置

    公开(公告)号:US06712031B2

    公开(公告)日:2004-03-30

    申请号:US10419229

    申请日:2003-04-21

    IPC分类号: F01L118

    摘要: There is provided a support device for a rocker arm, which is capable of suppressing deformation or wear of a washer, and greatly improving the working efficiency in assembling the washer to the rocker arm. The support device supports the rocker arm having a supported portion, for driving an engine valve of an internal combustion engine. A rocker shaft is supported between a pair of shaft holders arranged in the cylinder head, for pivotally supporting the rocker arm thereon via the supported portion. A washer has engaging pieces, and is attached to one of opposed ends of the supported portion of the rocker arm and one of the shaft holders, in a manner interposed between the opposed ends. The one of the opposed ends is formed with an annular engaging portion for having the washer engaged thereon via the engaging piece.

    摘要翻译: 提供了一种用于摇臂的支撑装置,其能够抑制垫圈的变形或磨损,并且大大提高将垫圈组装到摇臂上的工作效率。 支撑装置支撑具有支撑部分的摇臂,用于驱动内燃机的发动机气门。 摇臂轴支撑在布置在气缸盖中的一对轴保持器之间,用于通过支撑部分将摇臂枢转地支撑在其上。 垫圈具有接合件,并且以插入在相对端之间的方式附接到摇臂的支撑部分的一个相对端和一个轴保持件中的一个。 相对端中的一个形成有环形接合部分,用于使垫圈通过接合件与其接合。

    Timing chain lubricating system for engine

    公开(公告)号:US06662771B2

    公开(公告)日:2003-12-16

    申请号:US09953234

    申请日:2001-09-17

    申请人: Toshiki Kobayashi

    发明人: Toshiki Kobayashi

    IPC分类号: F01M106

    摘要: Sprockets are fixed to ends of camshafts supported in a cylinder head via camshaft holders, and a timing chain is wrapped around these sprockets. An oil drain hole is provided for supplying relief oil of a hydraulic control valve to the timing chain, and an oil jet is provided for issuing a jet of oil at high pressure from the hydraulic control valve to the timing chain. When the engine is rotating at low speed oil is supplied only through the oil drain hole, and when the engine is rotating at high speed, oil is supplied through both the oil jet and the oil drain hole. The timing chain wrapped around the sprockets of the camshafts can thereby be reliably lubricated according to the operational state of the engine.