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1. 发明申请

US20070209503A1 Hydraulic system with mechanism for relieving pressure trapped in an actuator 失效
标题翻译：液压系统，具有释放执行器压力的机构
公开(公告)号：US20070209503A1
公开(公告)日：2007-09-13
申请号：US11373892
申请日：2006-03-13
申请人： Joseph Pfaff , Keith Tabor
发明人： Joseph Pfaff , Keith Tabor
IPC分类号： F15B11/10
CPC分类号： F15B11/006 , F15B2211/20538 , F15B2211/30575 , F15B2211/3111 , F15B2211/3144 , F15B2211/31576 , F15B2211/327 , F15B2211/45 , F15B2211/6306 , F15B2211/6309 , F15B2211/6313 , F15B2211/6346 , F15B2211/6653 , F15B2211/7053 , F15B2211/88
摘要： Pressure trapped in an inactive hydraulic actuator can result in the actuator moving in a direction which is opposite to that desired upon subsequent activation. The present method detects a trapped pressure condition and takes remedial action before activating the hydraulic actuator for motion. The pressure differentials across valves that control the fluid flow to and from the hydraulic actuator are used to detect a trapped pressure condition. In response to that detection, a selected valve is initially opened in a manner that releases the trapped pressure while producing motion in the desired direction. After the trapped pressure condition has been resolved, one or more other valves are operated to produce the desired motion of the hydraulic actuator.
摘要翻译：被捕获在非活动液压执行器中的压力可导致致动器在随后激活时与所需的方向相反的方向移动。本方法检测被捕获的压力状况，并在启动液压致动器进行运动之前采取补救措施。用于控制流入和流出液压致动器的流体的阀门之间的压力差用于检测被捕获的压力状况。响应于该检测，选择的阀最初以释放被捕获的压力同时在所需方向产生运动的方式打开。在捕获的压力条件已经解决之后，一个或多个其他阀被操作以产生液压致动器的期望的运动。

2. 发明申请

US20060201146A1 Hydraulic control system with cross function regeneration 失效
标题翻译：具有交叉功能再生的液压控制系统
公开(公告)号：US20060201146A1
公开(公告)日：2006-09-14
申请号：US11079059
申请日：2005-03-14
申请人： Keith Tabor
发明人： Keith Tabor
IPC分类号： F16D31/02
CPC分类号： F15B21/14 , F15B11/006 , F15B11/163 , F15B21/082 , F15B2211/30575 , F15B2211/327 , F15B2211/351 , F15B2211/353 , F15B2211/63 , F15B2211/6309 , F15B2211/6313 , F15B2211/6654 , F15B2211/6658 , F15B2211/7053 , F15B2211/71 , F15B2211/75 , F15B2211/78 , F15B2211/88
摘要： A system operates a hydraulic actuator, such as a cylinder, in one of several modes that include powered extension and retraction, self-powering regeneration modes in which fluid exhausting from one cylinder chamber is routed into the other cylinder chamber, and cross function regeneration modes wherein the fluid exhausted from one actuator is routed in the supply conduit to power a different actuator. A controller determines which modes are viable based on existing system conditions and selects from among the viable available modes. That determination is a function of the desired velocity for the actuator, the hydraulic load on the actuator, and pressures in the supply and return hydraulic conduits. The system also can recover potential or kinetic energy through pressure intensification which recovered energy can be used to power another simultaneously active hydraulic function or to drive the prime mover via an over-center variable pump/motor.
摘要翻译：系统将液压致动器（例如气缸）操作在包括动力伸展和回缩的多种模式中的一种模式中，其中一个气缸室中排出的液体排出到另一气缸室中的自动再生模式以及交叉功能再生模式其中从一个致动器排出的流体在供应导管中被路由以为不同的致动器供电。控制器根据现有系统条件确定哪些模式可行，并从可行的可用模式中进行选择。该确定是致动器的期望速度，致动器上的液压负载以及供应和返回液压管道中的压力的函数。该系统还可以通过压力增强来恢复潜能或动能，回收的能量可用于为另一个同时有效的液压功能供电，或通过一个过中心的可变泵/电机来驱动原动机。

3. 发明申请

US20050211936A1 Electrohydraulic valve servomechanism with adaptive resistance estimator 失效
标题翻译：电液阀伺服机构与自适应电阻估计器
公开(公告)号：US20050211936A1
公开(公告)日：2005-09-29
申请号：US11083585
申请日：2005-03-18
申请人： Keith Tabor , Joseph Pfaff
发明人： Keith Tabor , Joseph Pfaff
IPC分类号： F15B11/04 , E02F9/22 , F15B11/00 , F15B19/00 , F15B21/08 , F16K31/02 , F16K37/00 , G05D7/06
CPC分类号： E02F9/22 , F15B11/006 , F15B19/00 , F15B21/087 , F15B2211/30575 , F15B2211/328 , F15B2211/875 , F16K37/0083
摘要： A servomechanism includes a controller which dynamically estimates the resistance of the solenoid coil in an electrohydraulic valve as part of determining a level of electric voltage to apply to open the valve. The servomechanism receives a current setpoint designating a desired electric current level and senses the actual level of current flowing through the coil. A proportional term is derived from the current setpoint and the actual level of current. Creation of a derivative term is based on the difference between the current setpoint and the actual level of current. A feedforward term is produced by estimating the resistance of the electrohydraulic valve and limiting the feedforward term to a predefined range of acceptable values. The proportional term, derivative term, and the feedforward term are summed to define a desired voltage level, and a PWM signal for driving the electrohydraulic valve is generated based on the desired voltage level.
摘要翻译：伺服机构包括控制器，该控制器动态地估计电动液压阀中的螺线管线圈的阻力，作为确定用于打开阀门的电压水平的一部分。伺服机构接收指定所需电流水平的电流设定点，并感测流过线圈的电流的实际电平。从当前设定值和电流的实际电平得出比例项。衍生项的创建是基于当前设定值与实际电流水平之差。通过估计电动液压阀的阻力并将前馈项限制在预定范围的可接受值来产生前馈项。将比例项，微分项和前馈项相加以确定期望的电压电平，并且基于期望的电压电平产生用于驱动电动液压阀的PWM信号。

4. 发明申请

US20080000396A1 Shipping container 审中-公开
标题翻译：海运集装箱
公开(公告)号：US20080000396A1
公开(公告)日：2008-01-03
申请号：US11818077
申请日：2007-06-12
申请人： Keith Tabor
发明人： Keith Tabor
IPC分类号： B65D19/02
CPC分类号： B65D19/44 , B65D2519/00159 , B65D2519/00452 , B65D2519/00502 , B65D2519/00621 , B65D2519/00666 , B65D2519/00711 , B65D2519/0082
摘要： A container for stackable articles includes a base assembly, a plurality of side assemblies, a top assembly, and a plurality of shelf assemblies. The base assembly, side assemblies, and top assembly are preferably constructed of a multiple layer, corrugated laminate, and are attachable to one another, defining an interior storage space. Each shelf assembly includes a plurality of shelf support members with a plurality of bearing portions adjacent and integral to each shelf support member. A plurality of shelf members are provided, wherein each shelf member is fixed about a respective bearing portion at each end of the shelf assembly. The shelf assemblies are secured to the sidewall assemblies, and positioned in the storage space to engage manufactured articles, for example sunroofs, positioned therein.
摘要翻译：用于可堆叠物品的容器包括基座组件，多个侧组件，顶组件和多个搁板组件。基部组件，侧部组件和顶部组件优选地由多层波纹状叠层构成，并且可彼此附接，限定内部存储空间。每个搁架组件包括多个搁架支撑构件，其具有与每个搁板支撑构件相邻并且成一体的多个支承部分。提供了多个搁架构件，其中每个搁架构件在搁架组件的每个端部处围绕相应的轴承部分固定。搁板组件固定到侧壁组件，并且定位在存储空间中以接合定位在其中的制造物品，例如天窗。

5. 发明申请

US20050216105A1 Hydraulic system with coordinated multiple axis control of a machine member 有权
标题翻译：液压系统，具有机器构件的多轴控制
公开(公告)号：US20050216105A1
公开(公告)日：2005-09-29
申请号：US10810377
申请日：2004-03-26
申请人： Keith Tabor
发明人： Keith Tabor
IPC分类号： B66F9/22 , B66F9/065 , E02F3/39 , E02F9/22 , F15B11/20 , F15B13/06 , G05B19/18 , G05B19/416 , G05D3/14 , G05D13/66 , G06F7/70 , G06F19/00
CPC分类号： B25J9/1628 , B66F9/0655 , B66F9/22 , E02F3/433 , E02F9/2029 , G05B2219/33263 , G05B2219/33264 , G05B2219/39002 , G05B2219/39221 , G05B2219/41255 , G05B2219/41273 , G05B2219/45017 , G05B2219/45049
摘要： A member of a machine, such as a boom on construction equipment for example, is pivoted by a first actuator and has a length that is alterable by a second actuator. A control method allows an operator of the machine to command a point on the member to move along a straight line path. The operator command specifies velocities along two orthogonal axes and those velocities are transformed into an angular velocity and a length velocity for the member. The angular velocity and a length velocity then are converted into individual velocities for the first and second actuators. Each actuator is operated at its respective velocity to achieve the commanded movement of the member.
摘要翻译：例如，诸如施工设备上的起重机的机器的构件由第一致动器枢转，并且具有可由第二致动器改变的长度。控制方法允许机器的操作者命令构件上的点沿着直线路径移动。操作员命令指定沿着两个正交轴的速度，这些速度被转换成成员的角速度和长度速度。然后将角速度和长度速度转换为第一和第二致动器的单独速度。每个致动器以其相应的速度操作以实现构件的指令运动。

6. 发明申请

US20050211312A1 Hydraulic system control method using a differential pressure compensated flow coefficient 失效
标题翻译：液压系统控制方法采用差压补偿流量系数
公开(公告)号：US20050211312A1
公开(公告)日：2005-09-29
申请号：US11089482
申请日：2005-03-24
申请人： Joseph Pfaff , Keith Tabor
发明人： Joseph Pfaff , Keith Tabor
IPC分类号： F15B11/028 , F15B11/00 , F15B13/04 , F15B13/044 , F15B21/02 , F15B21/08
CPC分类号： F15B21/02 , F15B11/006 , F15B21/087 , F15B2211/30575 , F15B2211/426 , F15B2211/455 , F15B2211/6306 , F15B2211/6654 , F15B2211/7053 , F15B2211/75 , Y10T137/87217
摘要： A hydraulic system has an electrohydraulic valve that controls flow of fluid to operate a hydraulic actuator, such as a cylinder or motor. A set of characterization data is provided which describes performance of the electrohydraulic valve as a function of changes in differential pressure across that valve. The hydraulic system is operated by specifying desired movement of the hydraulic actuator and in response deriving a desired valve flow coefficient which designates a level of fluid flow through the electrohydraulic valve. A compensated control signal is produced from the desired valve flow coefficient and the characterization data, to counter act effects that changes in differential pressure have on flow of fluid. The electrohydraulic valve is activated in response to the compensated control signal.
摘要翻译：液压系统具有电液阀，其控制流体的流动以操作液压致动器，例如气缸或马达。提供了一组表征数据，其描述了电液阀的性能作为该阀上的压差变化的函数。通过指定液压致动器的所需运动来操作液压系统，并且响应于导出指定通过电动液压阀的流体水平的期望的阀流量系数。从期望的阀流量系数和特征数据产生补偿控制信号，以抵消差压变化对流体流动的影响。电液阀响应于补偿的控制信号被激活。

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