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1. 发明授权

US5785087A Water hydraulic proportional control valve 失效
标题翻译：水压比例控制阀
公开(公告)号：US5785087A
公开(公告)日：1998-07-28
申请号：US829936
申请日：1997-04-01
申请人： Tamami Takahashi , Yuichi Usami
发明人： Tamami Takahashi , Yuichi Usami
IPC分类号： F16K31/12 , F15B13/04 , F15B13/044 , F15B21/06 , F16K11/07 , F16K31/06
CPC分类号： F15B13/0402 , F15B13/0442 , F15B21/06 , Y10T137/4245 , Y10T137/6552 , Y10T137/8242 , Y10T137/86622
摘要： A water hydraulic proportional control valve comprising: a valve body having a supply port, a control port and a return port; a spool axially movably disposed in the valve body for changing a direction of the working fluid and a flow rate of the working fluid; a direct driving mechanism which directly converts electric signals into a driving force for moving the spool, the valve opening of the control valve is controlled by means of a proportional control of the amount of a displacement of the spool from a neutral position thereof toward one direction or another according to an input signal supplied to the direct driving mechanism; spool side chambers provided on both sides of the spool; and drain channels formed in communication to each of the spool side chambers; wherein a water is used as the working fluid, and a flow passages is provided for introducing a pressurized fluid into said spool side chambers, whereby water filling the chamber is constantly replaced by a fresh water thereby preventing generation of microorganisms and decay of the water.
摘要翻译：一种水压比例控制阀，包括：具有供给口，控制口和返回口的阀体; 轴向可移动地设置在阀体中用于改变工作流体的方向和工作流体的流量的阀芯; 将电信号直接转换成用于移动阀芯的驱动力的直接驱动机构，通过将阀芯从其中性位置向一个方向的位移量的比例控制来控制控制阀的阀开度或根据提供给直接驱动机构的输入信号的另一个; 卷轴侧室设置在卷轴的两侧; 以及与每个所述线轴侧室连通形成的排水通道; 其中使用水作为工作流体，并且设置有用于将加压流体引入所述卷筒侧室中的流动通道，由此用新鲜水不断地更换填充该室的水，从而防止微生物的产生和水的腐烂。

2. 发明授权

US5944042A Flow force compensating method and flow control valve of spool type using the same method 失效
标题翻译：阀芯类型的流量补偿方法和流量控制阀采用相同的方法
公开(公告)号：US5944042A
公开(公告)日：1999-08-31
申请号：US996825
申请日：1997-12-23
申请人： Tamami Takahashi , Yuichi Usami
发明人： Tamami Takahashi , Yuichi Usami
IPC分类号： F16K25/00 , F16K3/26 , F16K11/07 , F16K35/00 , F16K39/04 , F15B13/04
CPC分类号： F16K11/07 , F16K39/04 , Y10T137/0318 , Y10T137/8671
摘要： A flow force compensating method for a flow control valve and a flow control valve using the same method, in which a spool is supported by hydrostatic bearings within a sleeve and fluid flow from the hydrostatic bearing flows into a valve space defined between a spool land and a circumferential groove of the sleeve, wherein a circumferential groove is formed in the spool land, bearing fluid flow flowing out of the bearing into the valve space defined between the circumferential groove and the sleeve groove is directed toward a central axis of the spool, and control flow is swirled by the bearing fluid flow, thereby compensating a flow force, acting on the spool.
摘要翻译：一种用于流量控制阀和流量控制阀的流量补偿方法，其使用相同的方法，其中阀芯由套筒内的静压轴承支撑，并且来自静压轴承的流体流动流入限定在阀芯接头和套筒的周向槽，其中在所述卷轴台面中形成有周向槽，将从所述轴承流出的轴承流体流动限定在所述周向槽和所述套筒槽之间的阀空间中，朝向所述阀芯的中心轴线，并且控制流由轴承流体流动旋转，从而补偿作用在阀芯上的流动力。

3. 发明授权

US5697401A Hydraulic servovalve 失效
标题翻译：液压伺服阀
公开(公告)号：US5697401A
公开(公告)日：1997-12-16
申请号：US678769
申请日：1996-07-11
申请人： Masao Shinoda , Chishiro Yamashina , Shimpei Miyakawa , Yuichi Usami
发明人： Masao Shinoda , Chishiro Yamashina , Shimpei Miyakawa , Yuichi Usami
IPC分类号： F15B13/043
CPC分类号： F15B13/0438 , Y10T137/86598 , Y10T137/8671
摘要： A hydraulic servovalve controls the direction of flow of a working fluid and a flow rate of a working fluid between a plurality of ports. The hydraulic servovalve includes a spool axially movably disposed in a valve body for changing a direction of a working fluid and varying a flow rate of the working fluid, a sleeve disposed in the valve body and having a spool hole for housing the spool, a pair of hydrostatic bearings disposed in the sleeve around respective opposite end portions of the spool, and a plurality of windows defined in the sleeve as control orifices for controlling a flow rate of a working fluid. The hydraulic servovalve further includes a fluid passageway communicating between the supply port and the control port through one of the windows, and a fluid passageway communicating between the control port and the return port through the other of the windows.
摘要翻译：液压伺服阀控制工作流体的流动方向和多个端口之间的工作流体的流量。液压伺服阀包括轴向可移动地设置在阀体中的阀芯，用于改变工作流体的方向和改变工作流体的流量，套筒设置在阀体中并具有用于容纳阀芯的阀芯孔，一对设置在套管中的静压轴承围绕阀芯的相应的相对端部分，以及限定在套筒中的多个窗口，作为用于控制工作流体的流量的控制孔。液压伺服阀还包括通过一个窗口在供给口和控制口之间连通的流体通道，以及通过另一个窗口在控制口与返回口之间连通的流体通路。

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