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29 条记录 (耗时 0.02 秒)

    Vane pump with pressure leaking groove to reduce pulsations
    2.
    发明授权
    Vane pump with pressure leaking groove to reduce pulsations 失效
    叶片泵与压力泄漏槽减少脉动

    公开(公告)号：US5046933A

    公开(公告)日：1991-09-10

    申请号：US450081

    申请日：1989-12-13

    申请人： Kyosuke Haga ,  Tsuneo Tanaka ,  Makoto Kawahara ,  Tatsuya Yamamoto

    发明人： Kyosuke Haga ,  Tsuneo Tanaka ,  Makoto Kawahara ,  Tatsuya Yamamoto

    IPC分类号： F04C15/00

    CPC分类号： F04C15/0049

    摘要： In a vane pump, a pump housing assembly contains a cam ring having an internal cam surface. A rotor carrying plural vanes is disposed within the cam ring and rotated by a drive shaft. Both end surfaces of the cam ring contact with a pair of flat contact surfaces formed within the pump housing assembly, respectively, and the vanes define plural pump sectors between the rotor and the cam ring, together with the rotor, the cam ring and the pair of contact surfaces. The contact surfaces are formed with a pair of intake ports and a pair of exhaust ports. Furthermore, one of the contact surfaces is provided with a pair of pressure leaking grooves formed at locations between the intake ports and the exhaust ports. The locations of the pressure leaking grooves are chosen so as to leak fluid in pump sectors communicating with the exhaust ports to adjacent pump sectors communicating with the intake ports through passages formed by the pressure leaking grooves and the side edges of vanes located between the two pump sectors whenever the instantaneous pressure of the fluid in the exhaust ports approaches an instantaneous maximum pressure. With this operation, the instantaneous maximum pressure is decreased, thereby the amplitude of the pressure pulsation being reduced.

    Rotary valve for power steering system
    3.
    发明授权
    Rotary valve for power steering system 失效
    动力转向系统旋转阀

    公开(公告)号：US4452274A

    公开(公告)日：1984-06-05

    申请号：US268380

    申请日：1981-05-29

    申请人： Kyosuke Haga ,  Tsuneo Tanaka

    发明人： Kyosuke Haga ,  Tsuneo Tanaka

    IPC分类号： B62D5/083 ,  B62D5/22 ,  F15B9/10

    CPC分类号： B62D5/083 ,  Y10T137/86646

    摘要： A rotary valve for a power steering system includes a valve sleeve in which a rotor is rotatably carried for controlling fluid flow from a supply pump to a cylinder of the power steering system. A plurality of lands are formed on the outer periphery of the rotor, at least three of which have the same configuration. A plurality of lands are formed on the inner periphery of the valve sleeve, at least two of which have the same configuration to thereby vary the areas of two orifices formed between the three lands of the rotor and the two lands of the valve sleeve at the same rate during relative rotation therebetween. Further, the edge portions of the three lands of the rotor are formed with two longitudinally curved slopes so as to provide an optimum two-step valving characteristic. Furthermore, two of lands formed on the rotor have at each side edge portion thereof a longitudinaly curved and radially extending wall so as to form additional orifice areas to provide an optimum valving characteristic by combining the same with the above two orifice areas.

    摘要翻译： 一种用于动力转向系统的旋转阀包括阀套，其中转子被可转动地承载，用于控制从供给泵到动力转向系统的气缸的流体流动。 在转子的外周上形成有多个平台，其中至少三个具有相同的构造。 在阀套的内周形成有多个平台，其中至少两个具有相同的构造，从而改变在转子的三个平台和阀套的两个平台之间形成的两个孔的面积 在它们之间的相对旋转期间相同的速率。 此外，转子的三个台阶的边缘部分形成有两个纵向弯曲的斜面，以便提供最佳的两阶段阀门特性。 此外，形成在转子上的两个区域在其每个侧边缘部分处具有纵向弯曲和径向延伸的壁，以便形成附加的孔面积，以通过将其与上述两个孔口区域组合而提供最佳阀门特性。

    Rotary servovalve for power-assisted steering system
    5.
    发明授权
    Rotary servovalve for power-assisted steering system 失效
    用于动力辅助转向系统的旋转伺服阀

    公开(公告)号：US4799514A

    公开(公告)日：1989-01-24

    申请号：US173613

    申请日：1988-03-25

    申请人： Tsuneo Tanaka ,  Katsuhisa Mori

    发明人： Tsuneo Tanaka ,  Katsuhisa Mori

    IPC分类号： B62D5/083 ,  F15B9/10 ,  F16K11/00

    CPC分类号： B62D5/083 ,  Y10T137/86654 ,  Y10T137/86662

    摘要： A rotary servovalve includes a valve sleeve formed with a supply port for connection to a source of fluid under pressure and distribution ports respectively for connection to opposite fluid chambers of a hydraulic power cylinder, the valve sleeve being formed at the inner periphery thereof with circumferentially spaced sleeve channels respectively in open communication with the supply and distribution ports, and a valve rotor coupled with the valve sleeve for relative rotation thereto, the valve rotor being formed thereon with circumferentially spaced control lands which are arranged to correspond with the sleeve channels when the servovalve is in a neutral position. The control lands corresponding with the sleeve channels in open communication with the distribution ports are each formed larger in width than the corresponding sleeve channel and smaller in height than the control land corresponding with the sleeve channel in open communication with the supply port to define a predetermined clearance for restricting the flow of fluid discharged from and supplied into the distribution ports when the servovalve is in the neutral position.

    摘要翻译： 旋转伺服阀包括形成有供应端口的阀套，所述供应端口用于连接到压力下的流体源和分配端口，用于连接到液压动力缸的相对的流体室，所述阀套在其内周形成有周向隔开的 套筒通道分别与供应和分配端口开放连通，以及阀转子，其与阀套件相连接以相对于其旋转，阀转子在其上形成有周向间隔开的控制焊盘，其布置成当伺服阀 处于中立位置。 对应于与分配口开放连通的套管通道的控制区域的宽度分别形成为比相应的套筒通道宽，并且与对应于与供给口开放连通的套筒通道的控制区域相比，具有较高的高度，以限定预定的 间隙，用于限制当伺服阀处于中立位置时从分配口排出和供应的流体流。

    Electrodynamic loudspeaker
    6.
    发明授权
    Electrodynamic loudspeaker 失效
    电动扬声器

    公开(公告)号：US4426556A

    公开(公告)日：1984-01-17

    申请号：US281167

    申请日：1981-07-07

    申请人： Shuji Saiki ,  Katuaki Sato ,  Kazue Sato ,  Seiichi Ishikawa ,  Hideaki Inoue ,  Tsuneo Tanaka

    发明人： Shuji Saiki ,  Katuaki Sato ,  Kazue Sato ,  Seiichi Ishikawa ,  Hideaki Inoue ,  Tsuneo Tanaka

    IPC分类号： H04R1/22 ,  H04R9/06 ,  H04R9/00

    CPC分类号： H04R1/225 ,  H04R9/063

    摘要： An electrodynamic loudspeaker which comprises a generally rectangular flat vibrating plate, and first and second magnetic drives for driving the vibrating plate to produce vibrations. The first magnetic drive is so positioned as to drive the vibrating plate at a first location corresponding to one of two line nodes m.sub.1 and m.sub.2 of vibration of a first predetermined frequency f.sub.1 which would be produced when the vibrating plate is driven at the center thereof, whereas the second magnetic drive is so positioned as to drive the vibrating plate at a second location corresponding to one of four line nodes n.sub.1, n.sub.2, n.sub.3 and n.sub.4 of vibration of a second predetermined frequency f.sub.3 which would be produced when the vibrating plate is driven at the center thereof. Each of all of the line nodes extends in parallel to the shorter sides of the rectangular shape of the vibrating plate.

    摘要翻译： 一种电动扬声器，其包括大致矩形的平面振动板，以及用于驱动振动板以产生振动的第一和第二磁性驱动器。 第一磁驱动器被定位成在对应于当振动板在其中心被驱动时产生的第一预定频率f1的两个线节点m1和m2振动之一的第一位置处驱动振动板， 而第二磁驱动器被定位成在与驱动振动板时产生的第二预定频率f3的振动的四个线节点n1，n2，n3和n4中的一个对应的第二位置处驱动振动板 在其中心。 所有线节点中的每一个平行于振动板的矩形形状的较短边延伸。

    Variable valve driving device
    8.
    发明授权
    Variable valve driving device 有权
    可变阀驱动装置

    公开(公告)号：US08091522B2

    公开(公告)日：2012-01-10

    申请号：US12300467

    申请日：2007-04-26

    申请人： Akihiko Minato ,  Terukazu Nishimura ,  Takeshi Tokumaru ,  Tsuneo Tanaka

    发明人： Akihiko Minato ,  Terukazu Nishimura ,  Takeshi Tokumaru ,  Tsuneo Tanaka

    IPC分类号： F01L9/02

    CPC分类号： F01L1/267 ,  F01L1/181 ,  F01L1/24 ,  F01L1/26 ,  F01L13/06 ,  F01L13/065 ,  F01L2013/0089

    摘要： To provide a variable valve driving device which can accurately control the lift amount of valves and can be manufactured at a low cost. The device has: valves (10) serving as intake valves or exhaust valves of an engine; springs (11) for biasing the valves (10) in the valve closing direction; a cam (12) for pressing the valves (10) in the valve opening direction against a biasing force of the springs; a piston (19) joined to the valves (10); a control chamber (21) configured by a piston insertion hole (20) into which the piston (19) is inserted; and a control mechanism (24) for changing the valve closing timing of the valves (10) by controlling the introduction and discharge of a working fluid into and from the control chamber (21).

    摘要翻译： 提供一种可以精确地控制阀的提升量并且可以以低成本制造的可变阀驱动装置。 该装置具有：作为发动机的进气门或排气阀的阀（10） 用于在阀关闭方向上偏压阀（10）的弹簧（11） 用于克服弹簧的偏置力在阀打开方向上按压阀（10）的凸轮（12） 连接到所述阀（10）的活塞（19）; 由活塞插入孔（20）构成的控制室（21），活塞（19）插入其中; 以及控制机构（24），用于通过控制从控制室（21）引入和排出工作流体来改变阀门（10）的关闭正时。

    Speaker system with image projection screen
    9.
    发明授权
    Speaker system with image projection screen 失效
    带影像投影屏的扬声器系统

    公开(公告)号：US5025474A

    公开(公告)日：1991-06-18

    申请号：US249954

    申请日：1988-09-27

    申请人： Tsuneo Tanaka ,  Kazue Sato ,  Hiroyuki Takewa ,  Akira Kurozuka ,  Tadashi Tamura ,  Katsuji Hattori ,  Satoshi Takayama ,  Kosaku Murata ,  Katsuaki Satoh ,  Mituhiko Serikawa ,  Youichi Kimura ,  Shuichi Obata

    发明人： Tsuneo Tanaka ,  Kazue Sato ,  Hiroyuki Takewa ,  Akira Kurozuka ,  Tadashi Tamura ,  Katsuji Hattori ,  Satoshi Takayama ,  Kosaku Murata ,  Katsuaki Satoh ,  Mituhiko Serikawa ,  Youichi Kimura ,  Shuichi Obata

    IPC分类号： G03B21/56 ,  H04R1/02 ,  H04R7/04 ,  H04R9/06

    CPC分类号： H04R1/02 ,  G03B21/565 ,  H04R7/04 ,  H04R9/063

    摘要： A speaker system has an acoustic diaphragm and an image projection screen provided on a surface of the diaphragm integrally therewith so as to enable the user to enjoy both realistic image on the screen and powerful sound reproduced through the diaphragm. The rear surface of the diaphragm is closed at a peripheral portion thereof while the central portion of the rear surface of the diaphragm is opened to the exterior, so that the speaker system can provide a high level of reproduced sound pressure in low-pitched region, while the thickness of the speaker is reduced remarkably. The diaphgram can be driven by a plurality of driving units so that the speaker system can operate only with an ordinary stereophonic amplifier. The diaphragm can be composed of a pair of diaphragm elements capable of vibrating independently of each other and the screen may be integrally and commonly attached to the surfaces of these diaphragm elements in such a manner as to allow the diaphragm elements to vibrate independently of each other, whereby the speaker system can operate in stereophonic mode. Any variation in the acoustic characteristic attributable to variation in the condition of installation is compensated for by a change in the ratio of the opened area of the rear surface of the diaphragm to the whole effective vibration area or by a selective provision of a sound absorbing member on the rear side of the cabinet.

    摘要翻译： 扬声器系统具有隔膜和与其一体地设置在隔膜表面上的图像投影屏幕，以使用户能够欣赏屏幕上的逼真图像和通过隔膜再现的强大声音。 隔膜的后表面在其周边部分封闭，同时隔膜的后表面的中心部分向外开放，从而扬声器系统可以在低音区域提供高水平的再现声压， 而扬声器的厚度显着降低。 可以通过多个驱动单元来驱动该图像，使得扬声器系统只能用普通的立体声放大器操作。 隔膜可以由能够彼此独立地振动的一对隔膜元件构成，并且屏幕可以一体地并且共同地附接到这些隔膜元件的表面，以允许隔膜元件彼此独立地振动 由此扬声器系统可以以立体声模式操作。 通过改变隔膜后表面的开口面积与整个有效振动面积之间的比例，或通过选择性地设置吸音构件来补偿由于安装条件的变化引起的声学特性的任何变化 在机柜的后侧。