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1. 发明授权

US06701822B2 Independent and regenerative mode fluid control system 失效
标题翻译：独立和再生模式流体控制系统
公开(公告)号：US06701822B2
公开(公告)日：2004-03-09
申请号：US10244074
申请日：2002-09-16
申请人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa , James D. Linderode
发明人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa , James D. Linderode
IPC分类号： F15B1100
CPC分类号： E02F9/2217 , E02F9/2225 , F15B11/024 , F15B11/16 , F15B21/14 , F15B2011/0246 , F15B2211/30505 , F15B2211/30575 , F15B2211/3058 , F15B2211/3059 , F15B2211/31588 , F15B2211/327 , F15B2211/351 , F15B2211/353 , F15B2211/71
摘要： A fluid control system is disclosed that includes a first double-acting actuator and a second double-acting actuator. A first independent metering valve has a first control port connected to the first double-acting actuator, a second control port connected to the second double-acting actuator, first and second independently operable valves disposed between the inlet port and the first and second control ports, and a first check control mechanism having a main check valve between the inlet port and the first and second independently operable valves. The first check control mechanism controls the main check valve to allow the first and second actuators to operate in either an independent function mode or a regenerative function mode. A second independent metering valve has a first control port connected to the first double-acting actuator, a second control port connected to the second double-acting actuator, first and second independently operable valves disposed between the inlet port and the first and second control ports, and a main check valve disposed between the inlet port and the first and second independently operable valves.
摘要翻译：公开了一种流体控制系统，其包括第一双作用致动器和第二双作用致动器。第一独立计量阀具有连接到第一双作用致动器的第一控制端口，连接到第二双作用致动器的第二控制端口，设置在入口端口和第一和第二控制端口之间的第一和第二可独立操作的阀以及第一检查控制机构，其具有在所述入口与所述第一和第二可独立操作的阀之间的主止回阀。第一检查控制机构控制主止回阀以允许第一和第二致动器以独立功能模式或再生功能模式操作。第二独立计量阀具有连接到第一双作用致动器的第一控制端口，连接到第二双作用致动器的第二控制端口，设置在入口端口和第一和第二控制端口之间的第一和第二可独立操作的阀以及设置在入口与第一和第二可独立操作的阀之间的主止回阀。

2. 发明授权

US06173639B1 Fluid control system having float control 有权
标题翻译：流体控制系统具有浮动控制
公开(公告)号：US06173639B1
公开(公告)日：2001-01-16
申请号：US09307167
申请日：1999-05-07
申请人： Michael A. A'Hearn , Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
发明人： Michael A. A'Hearn , Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
IPC分类号： F15B11024
CPC分类号： F15B11/003 , F15B2013/0413 , F15B2211/20576 , F15B2211/30515 , F15B2211/30525 , F15B2211/3116 , F15B2211/3127 , F15B2211/3144 , F15B2211/31529 , F15B2211/31541 , F15B2211/329 , F15B2211/40515 , F15B2211/413 , F15B2211/41581 , F15B2211/428 , F15B2211/46
摘要： A fluid control circuit providing a float capability for a double-acting actuator having first and second actuating chambers is provided. The fluid circuit includes signal controlled load check valves disposed between the actuating chambers and a directional control valve. The directional control valve is movable from a centered, neutral position towards first and second operative positions and a float position. The directional control valve and the load check valves are cooperatively operable in one operable position to allow fluid flow from the first actuating chamber to the exhaust port, and fluid flow from the pump port to the second actuating chamber. In the float position of the directional control valve, both of the signal controlled load check valves are opened to allow open fluid flow between the first and second actuating chambers thus allowing the tool attached to the actuator to float.
摘要翻译：提供了一种为具有第一和第二致动室的双作用致动器提供浮动能力的流体控制电路。流体回路包括设置在致动室和方向控制阀之间的信号控制负载止回阀。方向控制阀可从中心的中立位置朝向第一和第二操作位置以及浮动位置移动。方向控制阀和负载止回阀在一个可操作的位置协作地可操作以允许流体从第一致动室流到排气口，并且流体从泵口流到第二致动室。在方向控制阀的浮动位置，两个信号控制的负载止回阀被打开以允许第一和第二致动室之间的开放的流体流动，从而允许附接到致动器的工具浮动。

3. 发明授权

US06321534B1 Ride control 有权
标题翻译：驾驶控制
公开(公告)号：US06321534B1
公开(公告)日：2001-11-27
申请号：US09348490
申请日：1999-07-07
申请人： Michael A. A'Hearn , Thomas J. Hajek, Jr. , Michael D. Hudson , Lawrence F. Schexnayder , Srikrishnan T. Tolappa
发明人： Michael A. A'Hearn , Thomas J. Hajek, Jr. , Michael D. Hudson , Lawrence F. Schexnayder , Srikrishnan T. Tolappa
IPC分类号： F16D3102
CPC分类号： B60G17/0152 , B60G17/056 , B60G2500/02 , B60G2500/022 , B60G2500/203 , E02F9/2207 , E02F9/2217 , E02F9/2296 , F15B1/021
摘要： A ride control system adapted for use in a fluid system of a machine to cushion the ride of the machine, the machine having a frame with an actuator arrangement disposed between the frame and a load to raise the load relative to the frame, the actuator arrangement having a raise port and being operative in a raise mode to raise the load to a desired height in response to pressurized fluid being directed to the raise port from a source of the pressurized fluid, the ride control system including an accumulator arrangement and a valve arrangement connected between the accumulator arrangement, the actuator arrangement, and the source of pressurized fluid, and operative to selectively connect the accumulator arrangement to the raise port of the actuator arrangement when in the raise mode while maintaining the load at the desired height.
摘要翻译：一种适于在机器的流体系统中使用以缓冲机器骑行的行驶控制系统，所述机器具有框架，所述框架具有设置在所述框架和负载之间的致动器装置以相对于所述框架升高所述负载，所述致动器装置具有升高端口并且在升高模式下操作以响应于加压流体从加压流体的源引导到升高端口而将负载升高到期望的高度，所述行驶控制系统包括蓄能器装置和阀装置连接在蓄能器装置，致动器装置和加压流体源之间，并且当处于提升模式时将蓄能器装置选择性地连接到致动器装置的升高端口，同时将负载保持在期望的高度。

4. 发明授权

US06293181B1 Control system providing a float condition for a hydraulic cylinder 失效
标题翻译：控制系统为液压缸提供浮动状态
公开(公告)号：US06293181B1
公开(公告)日：2001-09-25
申请号：US09400670
申请日：1999-09-21
申请人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa , Daniel T. Mather
发明人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa , Daniel T. Mather
IPC分类号： F15B1310
CPC分类号： F15B11/024 , F15B2211/20576 , F15B2211/3051 , F15B2211/30525 , F15B2211/3111 , F15B2211/3127 , F15B2211/3144 , F15B2211/31576 , F15B2211/329 , F15B2211/6355 , F15B2211/67
摘要： A control system is provided with a float condition to permit a double acting hydraulic cylinder to freely extend or retract in response to external forces acting on the hydraulic cylinder. The system includes a pair of pilot operated poppet valves disposed between the opposite sides of the hydraulic cylinder and a directional control valve. The pilot condition is obtained by opening a pair of pilot operated control valves to vent the control chambers of the poppet valves to a tank through a pair of float check valves. The float check valves are operative to prevent higher pressure fluid from being transmitted from the tank to the control chambers of the poppet valves when a negative pressure occurs in the side of the hydraulic cylinder that is connected to the control chamber.
摘要翻译：控制系统设置有浮动状态，以允许双作用液压缸响应于作用在液压缸上的外力自由地延伸或缩回。该系统包括一对先导操作的提升阀，其设置在液压缸的相对侧和方向控制阀之间。通过打开一对先导操作的控制阀以通过一对浮动止回阀将提升阀的控制室排出到罐中来获得先导条件。当在与控制室连接的液压缸侧发生负压时，浮动止回阀可操作以防止高压流体从罐传递到提升阀的控制室。

5. 发明授权

US6089528A Poppet valve control with sealing element providing improved load drift control 失效
标题翻译：提升阀控制与密封元件提供改进的负载漂移控制
公开(公告)号：US6089528A
公开(公告)日：2000-07-18
申请号：US216439
申请日：1998-12-18
申请人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
发明人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
IPC分类号： F16K1/38 , F15B13/04 , F15B13/042 , F16K31/12 , F16K31/34 , F16K31/383 , F16K31/40
CPC分类号： F15B13/0405 , F15B13/0426
摘要： A control for a poppet valve providing improved load drift control is disclosed. The control includes a valve member operably moveable between a closed position and a range of open positions for allowing flow from an associated poppet control chamber, and a sealing element disposed between a first cavity portion in communication with the control chamber and a second cavity portion for preventing leakage around the valve member therebetween. The sealing element is supported by structure which maintains the sealing element in close alignment with a bore in which the valve member is supported, the sealing element in several embodiments being integrally formed with the bore and in other embodiments being self aligning with the bore.
摘要翻译：公开了一种提供改进的负载漂移控制的提升阀的控制。控制器包括可在关闭位置和一定范围的打开位置之间运动的阀构件，用于允许从相关联的提升阀控制室流出;以及密封元件，其设置在与控制室连通的第一空腔部分和第二空腔部分之间，防止阀构件周围的泄漏。密封元件由结构支撑，该结构保持密封元件与其中阀构件被支撑的孔紧密对准，在几个实施例中，密封元件与孔一体地形成，并且在其他实施例中与密封件自对准。

6. 发明授权

US06715403B2 Independent and regenerative mode fluid control system 有权
标题翻译：独立和再生模式流体控制系统
公开(公告)号：US06715403B2
公开(公告)日：2004-04-06
申请号：US10244077
申请日：2002-09-16
申请人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
发明人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
IPC分类号： F15B1100
CPC分类号： E02F9/2217 , E02F9/2225 , F15B11/024 , F15B11/16 , F15B21/14 , F15B2011/0246 , F15B2211/30505 , F15B2211/30575 , F15B2211/3058 , F15B2211/3059 , F15B2211/31588 , F15B2211/327 , F15B2211/351 , F15B2211/353 , F15B2211/40515 , F15B2211/41527 , F15B2211/426 , F15B2211/71 , F15B2211/78
摘要： A fluid control system is disclosed that includes a reservoir, a pump in fluid communication with the reservoir, a first double-acting actuator having a first head end chamber and a first rod end chamber, a second double-acting actuator having a second head end chamber and a second rod end chamber. The first and second double-acting actuators are selectively fluidly connected via a conduit. A first independent metering valve is configured to selectively provide fluid flow to the first and second double-acting actuators, and a second independent metering valve is configured to selectively provide fluid flow to the first and second double-acting actuators. The fluid control system also includes a proportional valve attached to the conduit between the first double-acting actuator and the second double-acting actuator. The proportional valve is capable of operating the fluid control system in either an independent function mode or a regenerative function mode.
摘要翻译：公开了一种流体控制系统，其包括储存器，与储存器流体连通的泵，具有第一头端室和第一杆端室的第一双作用致动器，具有第二头端部的第二双作用致动器室和第二杆端室。第一和第二双作用致动器通过导管选择性地流体连接。第一独立计量阀构造成选择性地向第一和第二双作用致动器提供流体流，并且第二独立计量阀构造成选择性地向第一和第二双作用致动器提供流体流。流体控制系统还包括附接到第一双作用致动器和第二双作用致动器之间的导管的比例阀。比例阀能够以独立功能模式或再生功能模式操作流体控制系统。

7. 发明授权

US06357230B1 Hydraulic ride control system 失效
标题翻译：液压行驶控制系统
公开(公告)号：US06357230B1
公开(公告)日：2002-03-19
申请号：US09464583
申请日：1999-12-16
申请人： Michael A. A'Hearn , David J. Carlson , Thomas J. Hajek, Jr. , Andy Hatcher , Michael D. Hudson , Patrick Quinn , Srikrishnan T. Tolappa
发明人： Michael A. A'Hearn , David J. Carlson , Thomas J. Hajek, Jr. , Andy Hatcher , Michael D. Hudson , Patrick Quinn , Srikrishnan T. Tolappa
IPC分类号： F16D3102
CPC分类号： E02F9/2207 , E02F9/2217
摘要： A hydraulic ride control system is disclosed and adapted to control the ride of a machine having a load. The ride control includes an accumulator arrangement that is selectively connected with the actuator that is carrying the load to provide a cushion ride during traveling and to enable the pressure in the accumulator arrangement to be maintained substantially the same as the pressure in the actuator when raising the load and to permit the pressure in the accumulator arrangement to be lowered to that of the pressure in the actuator in the event the load is lessened. The ride control system also provides an arrangement that permits the accumulator arrangement to be bled down whenever the machine becomes disabled or when the machine is shut off.
摘要翻译：液压行驶控制系统被公开并适于控制具有负载的机器的行驶。行驶控制装置包括蓄能器装置，该蓄能器装置选择性地与承载负载的致动器连接，以在行驶期间提供缓冲坐骑，并且使得蓄能器装置中的压力能够保持与致动器中的压力基本相同，在负载减轻的情况下，允许蓄能器装置中的压力降低到致动器中的压力。行驶控制系统还提供了一种布置，其允许在机器停用时或当机器关闭时将蓄能器装置排出。

8. 发明授权

US06186044B1 Fluid control system with float capability 有权
标题翻译：具有浮动能力的流体控制系统
公开(公告)号：US06186044B1
公开(公告)日：2001-02-13
申请号：US09264827
申请日：1999-03-08
申请人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
发明人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
IPC分类号： F15B11024
CPC分类号： F15B11/024 , F15B11/003 , F15B2211/20576 , F15B2211/30515 , F15B2211/30525 , F15B2211/3111 , F15B2211/3127 , F15B2211/3144 , F15B2211/31529 , F15B2211/31541 , F15B2211/329 , F15B2211/40515 , F15B2211/413 , F15B2211/41581 , F15B2211/428 , F15B2211/46
摘要： A fluid control system provides a float capability for a double-acting actuator. The system includes pilot operated check valves disposed between the double-acting actuator and first and second ports of a pilot operated directional control valve. The directional control valve and the check valves are cooperatively operable under first and second pilot signal conditions to extend and retract the double-acting actuator. The system includes a valve arrangement connected to the check valves and the directional control valve for producing the first and second pilot signal conditions thereon, including also directing the first pilot signal condition to the second pilot signal condition when the first pilot signal condition reaches a predetermined signal strength, to initiate a float capability.
摘要翻译：流体控制系统为双作用致动器提供浮动能力。该系统包括设置在双作用致动器和先导操作的方向控制阀的第一和第二端口之间的先导操作止回阀。方向控制阀和止回阀在第一和第二导频信号条件下可协作地操作以延伸和缩回双作用致动器。该系统包括连接到止回阀和方向控制阀的阀装置，用于产生其上的第一和第二导频信号条件，包括当第一导频信号条件达到预定的时间时将第一导频信号条件引导到第二导频信号条件信号强度，以启动浮动能力。

9. 发明授权

US06161467A Fluid control system with regeneration 有权
标题翻译：具有再生的流体控制系统
公开(公告)号：US06161467A
公开(公告)日：2000-12-19
申请号：US275153
申请日：1999-03-24
申请人： Michael A. A'Hearn , Thomas J. Hajek, Jr. , Tony L. Marcott , Srikrishnan T. Tolappa
发明人： Michael A. A'Hearn , Thomas J. Hajek, Jr. , Tony L. Marcott , Srikrishnan T. Tolappa
IPC分类号： F15B11/024 , F15B13/04 , F15B13/042
CPC分类号： F15B13/0402 , F15B11/024 , F15B13/0422 , F15B2013/0413 , F15B2211/20576 , F15B2211/30505 , F15B2211/3051 , F15B2211/3052 , F15B2211/30525 , F15B2211/3111 , F15B2211/3133 , F15B2211/3144 , F15B2211/31576 , F15B2211/31588 , F15B2211/329 , F15B2211/35 , F15B2211/50527 , F15B2211/5153 , F15B2211/528 , F15B2211/6054 , F15B2211/7053 , F15B2211/7128 , F15B2211/75
摘要： A fluid control system including a control valve providing a simple, easy to use regeneration capability in association with a pump, a tank, and a double acting actuator having a first actuating chamber and a second actuating chamber. The control valve has a first actuating chamber port connected to the first actuating chamber, a second actuating chamber port connected to the second actuating chamber, a tank port connected to the tank, a first pump port and a second pump port. The control valve includes a connecting passage connecting the first pump port and the second pump port to the pump, and is operable in a first position to allow fluid flow from the pump through the first pump port and the first actuating chamber port to the first actuating chamber and fluid flow from the second actuating chamber through the second actuating chamber port and the tank port to the tank. For regeneration, the control valve member is movable from the first position to a second position to allow the fluid flow from the second actuating chamber port to be diverted to the second pump port such that the fluid flow can pass through the connecting passage to the first pump port and through the first actuating chamber port to the first actuating chamber of the actuator.
摘要翻译：一种流体控制系统，其包括与泵，罐和具有第一致动室和第二致动室的双作用致动器相关联的提供简单，易于使用的再生能力的控制阀。所述控制阀具有连接到所述第一致动室的第一致动室端口，连接到所述第二驱动室的第二致动室端口，连接到所述箱的罐端口，第一泵端口和第二泵端口。控制阀包括将第一泵口和第二泵口连接到泵的连接通道，并且可在第一位置操作，以允许流体从泵经过第一泵口和第一致动室端口流动到第一致动室和流体从第二致动室通过第二致动室端口和罐端口流到罐。为了再生，控制阀构件可以从第一位置移动到第二位置，以允许来自第二致动室端口的流体流转向第二泵口，使得流体流可以穿过连接通道到达第一位置泵口并且通过第一致动室端口到致动器的第一致动室。

10. 发明授权

US5950989A Valve interface having mismatched radii 失效
标题翻译：阀门接口具有不匹配的半径
公开(公告)号：US5950989A
公开(公告)日：1999-09-14
申请号：US061517
申请日：1998-04-16
申请人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
发明人： Thomas J. Hajek, Jr. , Srikrishnan T. Tolappa
IPC分类号： F16K1/34 , F16K25/00
CPC分类号： F16K1/34 , F16K25/00
摘要： A valve interface provides a zero leak function for an area control valve. The valve interface is established by sealing contact between a concave valve face and a convex valve seat having mismatched radii. The concave valve face is formed on a valve element slidably disposed in a bore of a housing and the convex valve seat is formed in the housing and intersects with the bore.
摘要翻译：阀门接口为区域控制阀提供零泄漏功能。阀门接口通过凹面阀面与具有不匹配半径的凸阀座之间的密封接触来建立。凹形阀面形成在可滑动地设置在壳体的孔中的阀元件上，并且凸形阀座形成在壳体中并与孔相交。

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