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41. 发明授权

EP1730431B1 METHODS AND APPARATUS FOR MAINTAINING PRESSURE GAIN IN A SERVOVALVE ASSEMBLY 有权
标题翻译：方法和设备压力增益在伺服阀装置MAINTAINING
公开(公告)号：EP1730431B1
公开(公告)日：2008-12-24
申请号：EP05725156.3
申请日：2005-03-11
申请人： HR TEXTRON INC.
发明人： RODRIGUEZ, Mario Armando , OLSON, Ronald , LEWIS, Torin
IPC分类号： F16K11/07
CPC分类号： F16K11/07 , F16K27/041 , Y10T137/0491 , Y10T137/86598 , Y10T137/86606 , Y10T137/8671
摘要： A servovalve has a sleeve (104) having both a first metering aperture (122-1) and a second metering aperture (122-2) in fluid communication with a single port cavity (114-1) defined by the servovalve. A spool (106) oriented within the sleeve has a first land (130-1) and a second land (130-2) and defines a channel ( 132-1) oriented between the first land and the second land. When the spool orients in a null position within the sleeve, the first land overlaps the first metering aperture and the second land overlaps the second metering aperture. As a low viscosity fluid within the servovalve assembly leaks across the first land and enters the channel, the overlap of the first and second lands with the first and second metering apertures minimizes flow of the fluid from the channel into the port cavity associated with the metering apertures. The configuration of the sleeve assembly, therefore, maintains a relatively large pressure gain within the servovalve assembly.

42. 发明公开

EP1781953A1 PILOTVENTIL, INSBESONDERE FÜR SERVOVENTILE 有权
标题翻译：导阀，特别适用于伺服阀
公开(公告)号：EP1781953A1
公开(公告)日：2007-05-09
申请号：EP05781992.2
申请日：2005-08-02
申请人： Bosch Rexroth AG
发明人： RAUCH, Johannes , RUSTLER, Matthias
IPC分类号： F15B13/043
CPC分类号： F15B13/0438 , Y10T137/86598
摘要： Disclosed is a pilot valve, especially for a servo valve, comprising an actuating motor (6) and a hydraulic preamplifier via which a control pressure difference can be created that acts upon a main slider (32) of a main stage (4). According to the invention, a blocking mechanism (26) is embodied in the flow path of the control oil. A control duct (14, 16) that is connected, either directly or via a branch, to a control chamber of the main stage can be blocked by manually actuating said blocking mechanism (26) while the other control duct remains open. The other control duct can be blocked by actuating the blocking mechanism in the opposite direction while the first control duct remains open. A control pressure difference by means of which the main slider can be displaced into a predetermined position can be created manually by actuating said blocking mechanism.

43. 发明授权

EP1249651B1 FLUID CONTROL VALVE AND PLATE WITH FILTER 有权
标题翻译：流体控制阀和板带滤波器
公开(公告)号：EP1249651B1
公开(公告)日：2004-12-01
申请号：EP00955087.2
申请日：2000-08-29
申请人： EBARA CORPORATION
发明人： TAKAHASHI, Tamami , MOCHIZUKI, Yoshihiro
IPC分类号： F16K51/00 , F16K27/00 , F15B9/09 , F15B13/00 , F15B13/043 , F15B21/04
CPC分类号： F15B13/0438 , F15B21/041 , Y10T137/7976 , Y10T137/8085 , Y10T137/8122 , Y10T137/86598 , Y10T137/87885
摘要： A fluid control valve, comprising a valve block having a plurality of ports therein, a valve main body having ports formed therein corresponding to the ports in the valve block, and a plate disposed between the valve block and the valve main body, the plate further comprising a flow passage allowing the ports in the valve block to communicate with the ports in the valve main body, and having a filter disposed therein.

44. 发明公开

EP0849514A3 Single stage variable force solenoid pressure regulating valve 失效
标题翻译：单级，具有可调节的发动机功率的电磁压力控制阀
公开(公告)号：EP0849514A3
公开(公告)日：1999-05-19
申请号：EP97121771.6
申请日：1997-12-10
申请人： Saturn Electronics & Engineering, Inc.
发明人： Najmolhoda, Hamid , Seid, David L. , Nezwek, David A.
IPC分类号： F16K31/00 , F16K31/06
CPC分类号： F16K31/0631 , F16K31/0637 , F16K31/082 , G05D16/2093 , Y10T137/0318 , Y10T137/2278 , Y10T137/86598
摘要： A pressure regulating variable force solenoid fluid control valve (10) for regulating the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal comprises a supply port (SP) for receiving pressurized fluid, a control port (CP) in fluid flow communication to the supply port (SP) via a primary orifice (02), the control port (CP) communicating with an external component, such as a hydraulic automobile transmission component to control opertion thereof, and a variable force solenoid actuated valve that cooperates with a valve seat (18d) receiving pressurized fluid from the primary orifice (02) to control flow of pressurized fluid to one or more exhaust ports (EP) as a means to regulate pressure at the control port (CP) in dependence upon electrical current to a coil of the solenoid actuated valve. A secondary bleed orifice (03) is provided in a position between the supply port (SP) and the control port (CP) remote from the valve seat (18d) and proximate the control port (CP) to bleed presurized fluid to the control port in a manner to provide more precise low pressure fluid control, for example, particularly at or near zero gage (control) pressure, over wide fluid pressures and temperatures and reduce negative pressures that can be generated proximate the valve seat when the valve is opened.

45. 发明授权

EP0664500B1 Servovalve de régulation de pression 失效
标题翻译：压力控制伺服阀
公开(公告)号：EP0664500B1
公开(公告)日：1999-04-07
申请号：EP95400087.3
申请日：1995-01-17
申请人： L' HYDRAULIQUE CHATEAUDUN
发明人： Grancher, Raymond
IPC分类号： G05D16/20 , B60T8/36
CPC分类号： B60T8/366 , B60T8/325 , B60T8/3695 , B60T13/686 , G05D16/2093 , Y10T137/86598 , Y10T137/86614

46. 发明公开

EP0849514A2 Single stage variable force solenoid pressure regulating valve 失效
标题翻译： Einstufiges，elektromagnetisches Druckregellventil mit einstellbarer Motorkraft
公开(公告)号：EP0849514A2
公开(公告)日：1998-06-24
申请号：EP97121771.6
申请日：1997-12-10
申请人： Saturn Electronics & Engineering, Inc.
发明人： Najmolhoda, Hamid , Seid, David L. , Nezwek, David A.
IPC分类号： F16K31/00 , F16K31/06
CPC分类号： F16K31/0631 , F16K31/0637 , F16K31/082 , G05D16/2093 , Y10T137/0318 , Y10T137/2278 , Y10T137/86598
摘要： A pressure regulating variable force solenoid fluid control valve (10) for regulating the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal comprises a supply port (SP) for receiving pressurized fluid, a control port (CP) in fluid flow communication to the supply port (SP) via a primary orifice (02), the control port (CP) communicating with an external component, such as a hydraulic automobile transmission component to control opertion thereof, and a variable force solenoid actuated valve that cooperates with a valve seat (18d) receiving pressurized fluid from the primary orifice (02) to control flow of pressurized fluid to one or more exhaust ports (EP) as a means to regulate pressure at the control port (CP) in dependence upon electrical current to a coil of the solenoid actuated valve. A secondary bleed orifice (03) is provided in a position between the supply port (SP) and the control port (CP) remote from the valve seat (18d) and proximate the control port (CP) to bleed presurized fluid to the control port in a manner to provide more precise low pressure fluid control, for example, particularly at or near zero gage (control) pressure, over wide fluid pressures and temperatures and reduce negative pressures that can be generated proximate the valve seat when the valve is opened.
摘要翻译：用于调节与电输入信号的当前水平成比例的流体控制系统中的加压流体的压力的压力调节可变力电磁流体控制阀（10）包括用于接收加压流体的供应端口（SP），控制端口（CP），其经由主孔（02）与供给口（SP）流体流动连通，控制端口（CP）与诸如液压汽车传动部件的外部部件连通以控制其操作，以及变量强制电磁致动阀，其与从主开口（02）接收加压流体的阀座（18d）配合，以控制加压流体到一个或多个排气口（EP）的流动，作为调节控制口（CP ），这取决于对电磁致动阀的线圈的电流。在远离阀座（18d）和靠近控制端口（CP）的供给口（SP）和控制口（CP）之间的位置处设置有二次泄放孔（03），以将预先流出的流体排放到控制端口以提供更精确的低压流体控制，例如特别是处于或接近零量程（控制）压力，在宽的流体压力和温度下，并且减小当阀门打开时可能在阀座附近产生的负压。

47. 发明授权

EP0578583B1 Hydraulic servo valve with controlled disengagement feature 失效
标题翻译：液压伺服阀控制关断
公开(公告)号：EP0578583B1
公开(公告)日：1996-12-27
申请号：EP93420174.0
申请日：1993-04-27
申请人： MOOG CONTROLS, INC.
发明人： Smietana, James M.
IPC分类号： F15B13/043
CPC分类号： F15B13/043 , Y10T137/86598 , Y10T137/86614

48. 发明公开

EP0664500A1 Servovalve de régulation de pression 失效
标题翻译： Druckregelservoventil。
公开(公告)号：EP0664500A1
公开(公告)日：1995-07-26
申请号：EP95400087.3
申请日：1995-01-17
申请人： L' HYDRAULIQUE CHATEAUDUN
发明人： Grancher, Raymond
IPC分类号： G05D16/20 , B60T8/36
CPC分类号： B60T8/366 , B60T8/325 , B60T8/3695 , B60T13/686 , G05D16/2093 , Y10T137/86598 , Y10T137/86614
摘要： Elle comporte un corps de distributeur (1) muni d'un orifice d'utilisation (2), d'un orifice d'alimentation (3) et d'un orifice de retour (4), et un tiroir (5) monté pour coulisser à l'intérieur du corps de distributeur (1), entre une première position isolant l'orifice d'utilisation (2) des orifices d'alimentation et de retour, une seconde position reliant l'orifice d'utilisation à l'orifice d'alimentation (3) et une troisième position reliant l'orifice d'utilisation à l'orifice de retour (4). Le tiroir (5) délimite avec le corps de distributeur (1) deux chambres de pilotage (9, 10) alimentées par un fluide de pilotage, une chambre d'utilisation (7) reliée à l'orifice d'utilisation (2) par un canal d'utilisation (6) et une chambre d'amortissement (15) comportant un moyen mécanique (18) pour diminuer sa raideur hydraulique et reliée à l'orifice d'utilisation (2) via un canal d'amortissement (13) comportant un orifice calibré (14).
摘要翻译：伺服阀包括具有使用口（2），供给口（3）和返回口（4）的分配器主体（1）。安装滑阀（5），用于沿着分配器（1）的内部在隔离使用口（2）和供给和返回端口的第一位置之间滑动，将利用端口连接到供应端口的第二位置 3），以及将利用口连接到返回口（4）的第三位置。滑阀（5）由分配器主体（1），由控制流体供应的两个控制室（9,10），通过利用通道（6）连接到利用口（2）的利用室（7），以及包括用于降低液压刚度并且经由包括校准端口（14）的控制通道（13））连接所述利用口（2）的机械装置（18）的阻尼室（15）。

49. 发明授权

EP0399044B1 HYDRAULIC SERVO VALVE 失效
标题翻译：电液伺服阀。
公开(公告)号：EP0399044B1
公开(公告)日：1994-05-18
申请号：EP89900147.3
申请日：1988-12-02
申请人： EBARA RESEARCH CO., LTD. , URATA, Eizo
发明人： URATA, Eizo , MIYAKAWA, Shinpei
IPC分类号： F15B13/043
CPC分类号： F15B13/12 , F15B13/0402 , F15B21/06 , Y10T137/8659 , Y10T137/86598 , Y10T137/87201 , Y10T137/87209
摘要： This invention relates to a hydraulic servo valve comprising spools (10, 10R, 10L) which undergo displacement inside a valve body (1), switch the direction of an operating fluid and change its flow rate; nozzle back-pressure chambers (18, 18R, 18L) to which a pilot pressure for causing displacement of the spools (10, 10R, 10L) is applied; and a flapper mechanism consisting of nozzles (19, 19R, 19L) and flappers (20, 20R, 20L). Static pressure bearings (14R, 14L, 141R, 141L, 142R, 142L) are formed at both ends of the spools (10, 10R, 10L) so as to define the passage of the operating fluid extending from a pump port (P) to the nozzle back-pressure chambers (18, 18R, 18L) through the static pressure bearings (14R, 14L, 141R, 141L, 142R, 142L).

50. 发明公开

EP0448028A1 Torque motor with symmetrical air gaps 失效
标题翻译：扭矩 - 电机mit对称性Luftspalt。
公开(公告)号：EP0448028A1
公开(公告)日：1991-09-25
申请号：EP91104202.6
申请日：1991-03-19
申请人： VICKERS INCORPORATED
发明人： Blatter, Albert , Davis, Robert E.
IPC分类号： F15B13/043 , H02K26/00
CPC分类号： F15B13/043 , Y10T137/2278 , Y10T137/2409 , Y10T137/86598
摘要： An electrohydraulic servovalve comprising a torque motor (10) which receives an electrical signal and positions a flapper (11) of a spring tube and flapper subassembly (11, 21) between a pair of opposed nozzles (12) to control a spool valve (16) and includes a feedback spring (14) connected to the flapper (11) and to the spool (15) of the spool valve (16). A method of obtaining torque motor air gap symmetry is provided which comprises forming the pole piece/magnet subassembly (17, 18) to provide a desired total pole air gap on both ends of the armature (20), forming the armature ends so that they are equal to the total pole gap minus twice the desired nominal air gap, assembling the torque motor (10) before attaching the spring tube and flapper subassembly (11, 21), positioning the spring tube and flapper subassembly and the pole piece/magnets in a relative position to one another, providing spacers (36) between the lower edges of the armature (20) and the gap of the pole pieces, providing wedges (35) between the upper pole piece, providing a joint A between the tube (21) and the armature (20) by a hardenable material to bond the armature and the spring tube, and permitting the joint to harden and set.
摘要翻译：一种电动液压伺服阀，包括扭矩电动机（10），所述扭矩电动机（10）接收电信号，并将弹簧管和挡板组件（11,21）的挡板（11）定位在一对相对的喷嘴（12）之间，以控制滑阀（16）），并且包括连接到挡板（11）和滑阀（16）的阀芯（15）的反馈弹簧（14）。提供了一种获得扭矩电动机气隙对称性的方法，其包括形成极靴/磁体子组件（17,18）以在电枢（20）的两端提供期望的总极气隙，形成电枢端部，使得它们等于总磁极间隙减去所需额定气隙的两倍，在安装弹簧管和挡板组件（11,21）之前组装扭矩电机（10），将弹簧管和挡板组件和极片/磁体定位在彼此相对的位置，在电枢（20）的下边缘和极片的间隙之间提供间隔件（36），在上极片之间提供楔形物（35），从而在管（21）之间提供接头）和电枢（20）通过可硬化材料结合电枢和弹簧管，并允许接头硬化和固化。

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