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1. 发明授权

US09091281B2 System for allocating fluid from multiple pumps to a plurality of hydraulic functions on a priority basis 有权
标题翻译：优选地将流体从多个泵分配到多个液压功能的系统
公开(公告)号：US09091281B2
公开(公告)日：2015-07-28
申请号：US13420851
申请日：2012-03-15
申请人： Corey K. Quinnell , Joseph L. Pfaff , Jonathan M. Starkey , Eric P. Hamkins
发明人： Corey K. Quinnell , Joseph L. Pfaff , Jonathan M. Starkey , Eric P. Hamkins
IPC分类号： F16D31/02 , F15B7/00 , F15B11/17 , E02F9/22 , F15B11/16
CPC分类号： F15B7/003 , E02F9/2235 , E02F9/2242 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B11/165 , F15B11/17 , F15B2211/20546 , F15B2211/253 , F15B2211/3116 , F15B2211/6052 , F15B2211/654
摘要： A valve assembly has a flow summation node coupled to a displacement control port of the first pump. Each valve in the assembly has a variable metering orifice controlling flow from an inlet to a hydraulic actuator and has a variable source orifice conveying fluid from a supply conduit to a flow summation node. The source orifice enlarges as the metering orifice shrinks. Each valve includes a variable bypass orifice and the bypass orifices of all the control valves are connected in series forming a bypass passage between a bypass node and a tank. The bypass node is coupled to the flow summation node and receives fluid from a second pump. At each valve, a source check valve conveys fluid from the supply conduit to the inlet and a bypass supply check valve conveys fluid from the bypass passage to the inlet.
摘要翻译：阀组件具有联接到第一泵的位移控制端口的流量求和节点。组件中的每个阀都具有可变计量孔口，用于控制从入口到液压致动器的流量，并具有将流体从供应管道输送到流量求和节点的可变源孔口。当孔口收缩时，源孔口扩大。每个阀都包括一个可变旁路孔，并且所有控制阀的旁通孔串联连接，在旁路节点和罐之间形成旁路通道。旁路节点耦合到流量求和节点并接收来自第二泵的流体。在每个阀处，源止回阀将流体从供应管道输送到入口，旁路供应止回阀将流体从旁路通道输送到入口。

2. 发明授权

US08215107B2 Flow summation system for controlling a variable displacement hydraulic pump 有权
标题翻译：用于控制可变排量液压泵的流量求和系统
公开(公告)号：US08215107B2
公开(公告)日：2012-07-10
申请号：US12901058
申请日：2010-10-08
申请人： Joseph L. Pfaff , Eric P. Hamkins
发明人： Joseph L. Pfaff , Eric P. Hamkins
IPC分类号： F15B11/00 , F15B11/16
CPC分类号： F15B11/16 , F15B11/055 , F15B2211/20553 , F15B2211/253 , F15B2211/3111 , F15B2211/3116 , F15B2211/40515 , F15B2211/40592 , F15B2211/413 , Y10T137/85978
摘要： A valve assembly couples a plurality of hydraulic actuators to a variable displacement pump and to a tank. A separate valve is associated with each hydraulic actuator and comprises a variable flow source orifice between the supply conduit and a summation node coupled to a pump control port, a variable metering orifice between the summation node and the associated hydraulic actuator, and a variable bypass orifice between the summation node and the tank. As a valve operates to enlarge the metering orifice, the flow source orifice also enlarges, and the bypass orifice shrinks. When the valve operates to shrink the metering orifice, the flow source orifice also shrinks and the bypass orifice enlarges. Those operations vary fluid flow in and out of the summation node, which alters pressure applied to the pump control, thereby causing the pump output to vary as required to drive the associated hydraulic actuator.
摘要翻译：阀组件将多个液压致动器耦合到可变排量泵和罐。单独的阀与每个液压致动器相关联并且包括在供应管道和耦合到泵控制端口的总和节点之间的可变流源孔口，在总和节点和相关联的液压致动器之间的可变计量孔口，以及可变旁路孔口在总和节点和油箱之间。当阀门操作以扩大计量孔口时，流动源孔口也扩大，并且旁路管口收缩。当阀门操作以收缩计量孔口时，流动源孔口也收缩并且旁路孔口扩大。这些操作改变流入和流出加和节点的流体流量，这改变了施加到泵控制器上的压力，从而使得泵输出根据需要而变化以驱动相关联的液压致动器。

3. 发明申请

US20080110165A1 ENERGY RECOVERY AND REUSE METHODS FOR A HYDRAULIC SYSTEM 有权
标题翻译：液压系统的能源回收和再利用方法
公开(公告)号：US20080110165A1
公开(公告)日：2008-05-15
申请号：US11939847
申请日：2007-11-14
申请人： Eric P. Hamkins , Dwight B. Stephenson , Joseph L. Pfaff , Keith A. Tabor
发明人： Eric P. Hamkins , Dwight B. Stephenson , Joseph L. Pfaff , Keith A. Tabor
IPC分类号： F15B11/024
CPC分类号： F15B11/006 , E02F9/2217 , E02F9/2228 , E02F9/2292 , E02F9/2296 , F15B11/024 , F15B21/14 , F15B2211/212 , F15B2211/30575 , F15B2211/625 , F15B2211/6313 , F15B2211/6346 , F15B2211/7053 , F15B2211/7058 , F15B2211/7128 , F15B2211/88
摘要： A method provides several modes for recovering hydraulic energy produced by an overrunning load acting on cylinders connected in parallel to a machine component. In one mode, fluid from first chambers in both cylinders is routed into the accumulator, while other fluid is directed into second chambers of those cylinders. In a different mode, fluid is routed from the first chamber of only one cylinder into the accumulator, and fluid from the first chamber of the other cylinder goes into the second chambers of both cylinders. Yet another mode comprises routing fluid from the first chambers of both cylinders into the second chambers of both cylinders. In still another mode, fluid from the first chambers of both cylinders goes into the return conduit while the second chambers of both cylinders receive fluid from a supply conduit. Several modes of reusing the recovered energy are described.
摘要翻译：一种方法提供了几种模式，用于回收由作用在与机器部件并联连接的气缸上的超越负载产生的液压能量。在一种模式中，来自两个气缸中的第一腔室的流体被引导到蓄能器中，而其它流体被引导到这些气缸的第二腔室中。在不同的模式中，流体从仅一个气缸的第一室传送到蓄能器中，并且来自另一个气缸的第一室的流体进入两个气缸的第二室。另一种模式包括将流体从两个气缸的第一室引导到两个气缸的第二腔室中。在另一种模式中，来自两个气缸的第一腔室的流体进入返回导管，而两个气缸的第二腔室从供应导管接收流体。描述了重新利用回收能量的几种模式。

4. 发明申请

US20080034957A1 Hydraulic Actuator Control Circuit With Pressure Operated Counterbalancing Valves 审中-公开
标题翻译：带压力平衡阀的液压执行器控制回路
公开(公告)号：US20080034957A1
公开(公告)日：2008-02-14
申请号：US11463486
申请日：2006-08-09
申请人： Dwight B. Stephenson , Joseph L. Pfaff , Christopher J. Kolbe , Robert J. Valenta , Eric P. Hamkins
发明人： Dwight B. Stephenson , Joseph L. Pfaff , Christopher J. Kolbe , Robert J. Valenta , Eric P. Hamkins
IPC分类号： F15B13/04
CPC分类号： F15B11/006 , F15B11/0445 , F15B21/08 , F15B2211/20538 , F15B2211/30575 , F15B2211/3144 , F15B2211/327 , F15B2211/50581 , F15B2211/6306 , F15B2211/6309 , F15B2211/6313 , F15B2211/6346 , F15B2211/7053
摘要： A valve assembly controls fluid flow between first and second ports of a hydraulic actuator and each of a supply line and a return line. A first electrohydraulic proportional valve is connected between the supply line and the first port, and second electrohydraulic proportional valve is connected between the supply line and the second port. A first counterbalance valve couples the second port to the return line and operates in response to pressure created by the first electrohydraulic proportional valve and the first port. A second counterbalance valve couples the first port to the return line and operates in response to pressure created by the second electrohydraulic proportional valve and the second port. Thus operation of the first counterbalance valve is slaved to the first electrohydraulic proportional valve, and the second counterbalance valve is slaved to the second electrohydraulic proportional valve.
摘要翻译：阀组件控制液压致动器的第一和第二端口之间的流体流动以及供应管线和回流管线中的每一个。第一电液比例阀连接在供应管线和第一端口之间，第二电液比例阀连接在供应管线和第二端口之间。第一平衡阀将第二端口连接到返回管线并且响应于由第一电动液压比例阀和第一端口产生的压力而操作。第二平衡阀将第一端口耦合到返回管线并且响应于由第二电动液压比例阀和第二端口产生的压力而操作。因此，第一平衡阀的动作被切换到第一电动比例阀，第二平衡阀被切换到第二电动比例阀。

5. 发明授权

US07905088B2 Energy recovery and reuse techniques for a hydraulic system 有权
标题翻译：液压系统的能量回收和再利用技术
公开(公告)号：US07905088B2
公开(公告)日：2011-03-15
申请号：US11939861
申请日：2007-11-14
申请人： Dwight B. Stephenson , Eric P. Hamkins , Joseph L. Pfaff , Keith A. Tabor
发明人： Dwight B. Stephenson , Eric P. Hamkins , Joseph L. Pfaff , Keith A. Tabor
IPC分类号： F16D31/02
CPC分类号： F15B11/006 , E02F9/2217 , E02F9/2228 , E02F9/2292 , E02F9/2296 , F15B11/024 , F15B21/14 , F15B2211/212 , F15B2211/30575 , F15B2211/625 , F15B2211/6313 , F15B2211/6346 , F15B2211/7128 , F15B2211/88
摘要： A hydraulic system has a valve assembly with two workports coupled to chambers of first and second cylinders which are connected mechanically in parallel to a machine component. A separation control valve is connected between first chambers of both cylinders, and a shunt control valve is connected between the workports. A recovery control valve couples an accumulator to the first chamber of the second cylinder. Opening and closing the valves in different combinations routes fluid from one or both cylinders into the accumulator where the fluid is stored under pressure, and thereafter enables stored fluid to be used to power one or both cylinders. The shunt control valve is used to route fluid exhausting from one chamber of each cylinder to the other chambers of those cylinders. Thus the hydraulic system recovers and reuses energy in various manners.
摘要翻译：液压系统具有阀组件，其具有联接到第一和第二气缸的室的两个工作端口，其与机器部件机械并联连接。分离控制阀连接在两个气缸的第一腔室之间，分流控制阀连接在工作口之间。恢复控制阀将蓄能器连接到第二气缸的第一室。以不同组合打开和关闭阀门将流体从一个或两个气缸引导到储存器中，其中流体在压力下储存，然后使得存储的流体能够用于为一个或两个气缸供电。分流控制阀用于将每个气缸的一个室的流体排出物引导到这些气缸的其他室。因此，液压系统以各种方式恢复和再利用能量。

6. 发明授权

US5950429A Hydraulic control valve system with load sensing priority 失效
标题翻译：液压控制阀系统，负载感应优先
公开(公告)号：US5950429A
公开(公告)日：1999-09-14
申请号：US992591
申请日：1997-12-17
申请人： Eric P. Hamkins
发明人： Eric P. Hamkins
IPC分类号： F15B11/00 , F15B11/05 , F15B11/16 , F16D31/02
CPC分类号： F15B11/162 , F15B11/163 , F15B11/168 , F15B2211/20553 , F15B2211/25 , F15B2211/30555 , F15B2211/351 , F15B2211/6054 , F15B2211/6055 , F15B2211/6058 , F15B2211/71 , F15B2211/76 , F15B2211/781
摘要： A hydraulic fluid is supplied from a tank to a plurality of actuators by a variable displacement pump which produces an output pressure that is a constant amount greater than a pressure at a control input. A mechanism senses the greatest pressure among the workports to provide a first load-dependent pressure and a second load-dependent pressure which is greater than the first load-dependent pressure when the pump operates a maximum flow capacity. Each valve section includes a pressure compensating valve which controls the fluid flow to the associated actuator in response to a pressure differential between the metering orifice and either the first or second load-dependent pressures. When the pump operates at maximum flow capacity, actuators connected to the valve sections in which the pressure compensating valve responds to the first load-dependent pressure receive the fluid flow on a priority basis as compared to the other valve sections. Thus the system operates the priority actuators as normally as possible during a maximum pump flow situation by reducing the fluid flow to non-priority actuators.
摘要翻译：液压流体通过可变排量泵从罐供给到多个致动器，该可变排量泵产生的输出压力大于控制输入处的压力的恒定量。机构感测到工作端口中提供第一负载相关压力和第二负载相关压力的最大压力，该压力大于当泵运行最大流量时的第一负载相关压力。每个阀部分包括压力补偿阀，其响应于计量孔口之间的压差和第一或第二负载相关压力来控制流向相关致动器的流体流量。当泵以最大流量运行时，连接到阀部分的致动器，其中压力补偿阀响应于第一负载相关压力，与其他阀部分相比优先基准接收流体流。因此，通过减少流向不优先执行器的流体，系统在最大泵流情况期间尽可能平常地操作优先执行器。

7. 发明授权

US08899034B2 Hydraulic system with fluid flow summation control of a variable displacement pump and priority allocation of fluid flow 有权
标题翻译：液压系统具有可变排量泵的流体流量和控制以及流体流动的优先配置
公开(公告)号：US08899034B2
公开(公告)日：2014-12-02
申请号：US13334153
申请日：2011-12-22
申请人： Jacob Ballweg , Gary J. Pieper , Corey K. Quinnell , Jonathan M. Starkey , Eric P. Hamkins
发明人： Jacob Ballweg , Gary J. Pieper , Corey K. Quinnell , Jonathan M. Starkey , Eric P. Hamkins
IPC分类号： F16D31/02
CPC分类号： F15B11/162 , F15B2211/3116 , F15B2211/3122 , F15B2211/351 , F15B2211/40507 , F15B2211/40515 , F15B2211/41509 , F15B2211/455 , F15B2211/7142 , F15B2211/781
摘要： A system has a variable displacement pump that supplies pressurized fluid to power a plurality of hydraulic functions. Each hydraulic function has a control valve with a variable source orifice controlling fluid flow between the pump and a flow summation node, and a variable metering orifice controlling fluid flow between the flow summation node and a hydraulic actuator. Variable bypass orifices in the control valves are connected in series between the flow summation node and a tank. As the metering orifice in a control valve enlarges, the source orifice enlarges and the bypass orifice shrinks. This alters pressure at the flow summation node, which is used to control the output of the pump. Components are provided to give selected hydraulic functions different levels of priority with respect to consuming fluid flow from the pump.
摘要翻译：一种系统具有可变排量泵，其提供加压流体以对多个液压功能供电。每个液压功能都具有控制阀，该控制阀具有控制流体在泵和流量求和节点之间的流体流量的可变源孔，以及控制流量加和节点和液压致动器之间的流体流量的可变计量孔。控制阀中的可变旁通孔串联在流量求和节点和罐之间。当控制阀中的计量孔扩大时，源孔扩大，旁路孔收缩。这改变了流量求和节点处的压力，其用于控制泵的输出。提供组件以使选定的液压功能相对于消耗来自泵的流体流动具有不同的优先级。

8. 发明申请

US20120233996A1 SYSTEM FOR ALLOCATING FLUID FROM MULTIPLE PUMPS TO A PLURALITY OF HYDRAULIC FUNCTIONS ON A PRIORITY BASIS 有权
标题翻译：将液体从多个流量分配到优先级基础上的液压功能的系统
公开(公告)号：US20120233996A1
公开(公告)日：2012-09-20
申请号：US13420851
申请日：2012-03-15
申请人： Corey K. Quinnell , Joseph L. Pfaff , Jonathan M. Starkey , Eric P. Hamkins
发明人： Corey K. Quinnell , Joseph L. Pfaff , Jonathan M. Starkey , Eric P. Hamkins
IPC分类号： F15B13/06 , F15B11/20 , F15B11/17
CPC分类号： F15B7/003 , E02F9/2235 , E02F9/2242 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B11/165 , F15B11/17 , F15B2211/20546 , F15B2211/253 , F15B2211/3116 , F15B2211/6052 , F15B2211/654
摘要： A valve assembly has a flow summation node coupled to a displacement control port of the first pump. Each valve in the assembly has a variable metering orifice controlling flow from an inlet to a hydraulic actuator and has a variable source orifice conveying fluid from a supply conduit to a flow summation node. The source orifice enlarges as the metering orifice shrinks. Each valve includes a variable bypass orifice and the bypass orifices of all the control valves are connected in series forming a bypass passage between a bypass node and a tank. The bypass node is coupled to the flow summation node and receives fluid from a second pump. At each valve, a source check valve conveys fluid from the supply conduit to the inlet and a bypass supply check valve conveys fluid from the bypass passage to the inlet.
摘要翻译：阀组件具有联接到第一泵的位移控制端口的流量求和节点。组件中的每个阀都具有可变计量孔口，用于控制从入口到液压致动器的流量，并具有将流体从供应管道输送到流量求和节点的可变源孔口。当孔口收缩时，源孔口扩大。每个阀都包括一个可变旁路孔，并且所有控制阀的旁通孔串联连接，在旁路节点和罐之间形成旁路通道。旁路节点耦合到流量求和节点并接收来自第二泵的流体。在每个阀处，源止回阀将流体从供应管道输送到入口，旁路供应止回阀将流体从旁路通道输送到入口。

9. 发明申请

US20110308242A1 COMMAND BASED METHOD FOR ALLOCATING FLUID FLOW FROM A PLURALITY OF PUMPS TO MULTIPLE HYDRAULIC FUNCTIONS 有权
标题翻译：将流体从多个泵送到多个液压功能的基于命令的方法
公开(公告)号：US20110308242A1
公开(公告)日：2011-12-22
申请号：US13158631
申请日：2011-06-13
申请人： Joseph L. Pfaff , Eric P. Hamkins , Corey K. Quinnell
发明人： Joseph L. Pfaff , Eric P. Hamkins , Corey K. Quinnell
IPC分类号： F15B13/02
CPC分类号： F15B11/17 , E02F9/2242 , E02F9/2292 , E02F9/2296 , F15B2211/20523 , F15B2211/20546 , F15B2211/20576 , F15B2211/265 , F15B2211/30575 , F15B2211/6306 , F15B2211/6309 , F15B2211/6313 , F15B2211/6346
摘要： Fluid from two pumps is allocated to a plurality of hydraulic actuators based on a plurality of flow commands, each specifying a desired amount of flow to be applied to a different hydraulic actuator. For a given hydraulic actuator, the allocation involves (1) determining an apportionment of the desired amount of flow, if no other hydraulic actuator is active, and (2) altering the apportionment in response to all the plurality of flow commands, and (3) using the altered apportionment to determine a first amount of the flow for one pump to provide and a second amount of the flow for the other pump to provide. The process is repeated for all the hydraulic actuators. Supply valves for each hydraulic actuator are controlled by the associated first and second amounts and each pump is controlled in response to either the first or second amounts for all the hydraulic actuators.
摘要翻译：基于多个流动指令将来自两个泵的流体分配给多个液压致动器，每个流量指令指定要施加到不同液压致动器的期望流量。对于给定的液压致动器，分配涉及（1）如果没有其他液压致动器是有效的，则确定所需量的流量的分配，以及（2）响应于所有多个流动命令改变分配，并且（3 ）使用改变的分配来确定一个泵提供的第一量的流量和另一个泵提供的第二量的流量。对于所有液压执行器重复该过程。用于每个液压致动器的供应阀由相关联的第一和第二量控制，并且响应于所有液压致动器的第一或第二量来控制每个泵。

10. 发明授权

US06640834B1 Electrohydraulic valve for controlling a cam shaft phasing mechanism of an internal combustion engine 失效
标题翻译：用于控制内燃机的凸轮轴相位机构的电动液压阀
公开(公告)号：US06640834B1
公开(公告)日：2003-11-04
申请号：US10213194
申请日：2002-08-06
申请人： Eric P. Hamkins , Edward A. Flynn
发明人： Eric P. Hamkins , Edward A. Flynn
IPC分类号： A44B900
CPC分类号： F16K31/0613 , F01L1/022 , F01L1/024 , F01L1/026 , F01L1/344 , F01L1/3442 , F01L2001/028 , F01L2001/34426 , F01L2001/3443 , F01L2001/34433 , F01L2101/00 , F01L2820/041 , Y10T137/86622
摘要： A solenoid operated valve has a valve body with a plurality of ports and a spool slidable within the body to interconnect the ports in different combinations. A solenoid, which is coupled to drive the spool, has a coil wound on an annular bobbin with a tube of an electrically conductive, non-magnetic metal within the bobbin. A first pole piece extends into one end of the tube and a second pole piece extends into another end of the tube. A separate bushing is located in an aperture in each pole piece. Each bushing has a tubular body with a first end section that has a larger outer diameter than a second end section and the second end section that has a smaller inner diameter than the first end section. The solenoid further includes an armature that is slidably received in the bushings and engaging the spool.
摘要翻译：螺线管操作的阀具有带有多个端口的阀体和可在主体内滑动以便以不同组合互连端口的阀芯。联接以驱动线轴的螺线管具有缠绕在环形绕线管上的线圈，在线轴内具有导电的非磁性金属管。第一极片延伸到管的一端，并且第二极靴延伸到管的另一端。单独的衬套位于每个极片的孔中。每个衬套具有管状体，其具有第一端部部分，其具有比第二端部部分更大的外径，而第二端部部分具有比第一端部部分更小的内径。螺线管还包括可滑动地容纳在衬套中并接合线轴的电枢。

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