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22 条记录 (耗时 0.017 秒)

    Plunger with flow passage and chamber
    1.
    发明申请
    Plunger with flow passage and chamber 审中-公开
    具有流动通道和腔室的柱塞

    公开(公告)号：US20050056416A1

    公开(公告)日：2005-03-17

    申请号：US10832517

    申请日：2004-04-27

    申请人： William Gray ,  James Holt

    发明人： William Gray ,  James Holt

    IPC分类号： E21B43/12 ,  E21B43/00 ,  E21B33/12

    CPC分类号： E21B43/121

    摘要： A chamber for use in plungers used in wells that produce liquids and/or gases under, which is connected to an internal flow passage to facilitate more rapid descent of the plunger to the well stop. A closure means is housed within the chamber, and is in the open position when the plunger descends down the tubulars. The closure means is actuated when the plunger and stopper stem reach the well stop. Once the closure means is seated, it is held in the closed position by the build up of pressure below the plunger. The invention also covers a plunger and a method of using the plunger.

    摘要翻译： 用于在井中产生液体和/或气体的柱塞的室，其连接到内部流动通道以促进柱塞更快地下降到井口。 闭合装置容纳在腔室内，并且当柱塞沿着管状物下降时处于打开位置。 当柱塞和止动杆到达油井停止时，关闭装置被致动。 一旦闭合装置就位，则通过在柱塞下方的压力的积聚将其保持在关闭位置。 本发明还包括柱塞和使用柱塞的方法。

    Variable edge modulation in a switching regulator
    2.
    发明申请
    Variable edge modulation in a switching regulator 审中-公开
    开关调节器中的可变边沿调制

    公开(公告)号：US20080106917A1

    公开(公告)日：2008-05-08

    申请号：US11592092

    申请日：2006-11-02

    申请人： James Holt

    发明人： James Holt

    IPC分类号： H02M3/337

    CPC分类号： H02M3/156 ,  H02M3/157 ,  H02M2001/0032 ,  Y02B70/16

    摘要： In one embodiment, in a power converter system having a load, a method is provided for varying the type of modulation employed for a pulse width modulation (PWM) signal. The method includes the following: monitoring the load of the power converter system; using leading edge modulation for the PWM signal under light load condition; and using trailing edge modulation for the PWM signal under heavy load condition; thereby optimizing operation of the power converter system.

    摘要翻译： 在一个实施例中，在具有负载的功率转换器系统中，提供了用于改变用于脉宽调制（PWM）信号的调制类型的方法。 该方法包括：监控电力转换器系统的负载; 在轻负载条件下使用PWM信号的前沿调制; 并在重载条件下对PWM信号采用后沿调制; 从而优化功率转换器系统的运行。

    System and method for decoupled precomputation prefetching
    3.
    发明申请
    System and method for decoupled precomputation prefetching 审中-公开
    解耦预先计算预取的系统和方法

    公开(公告)号：US20070101100A1

    公开(公告)日：2007-05-03

    申请号：US11262171

    申请日：2005-10-28

    申请人： Hassan Al Sukhni ,  James Holt

    发明人： Hassan Al Sukhni ,  James Holt

    IPC分类号： G06F9/30

    CPC分类号： G06F9/3851 ,  G06F9/30181 ,  G06F9/325 ,  G06F9/3455 ,  G06F9/3802 ,  G06F9/3808 ,  G06F9/381 ,  G06F9/383 ,  G06F9/3832 ,  G06F9/3834 ,  G06F9/3842 ,  G06F9/3885

    摘要： A program stream is executed at a first processing engine, the program stream including multiple iterations of a first load instruction. An instruction loop is executed at a second processing engine separate from the first processing engine substantially in parallel with an execution of the program stream at the first processing engine for prefetching data from memory to a buffer for one or more iterations of the first load instruction of the program stream. The instruction loop represents a subset of a sequence of instructions between iterations of the first load instruction that affect an address value associated with the first load instruction. A confidence value associated with the instruction loop is modified based on a prefetch performance of one or more iterations of the first load instruction and it is determined whether to terminate execution of the instruction loop based on the confidence value.

    摘要翻译： 在第一处理引擎执行程序流，所述程序流包括第一加载指令的多次迭代。 在与第一处理引擎分开的第二处理引擎上执行指令循环，与第一处理引擎的程序流的执行基本上并行，用于将数据从存储器预取到缓冲器，用于一次或多次迭代第一加载指令 程序流。 指令循环表示影响与第一加载指令相关联的地址值的第一加载指令的迭代之间的指令序列的子集。 基于第一加载指令的一次或多次迭代的预取性能来修改与指令循环相关联的置信度值，并且基于置信度确定是否终止指令循环的执行。

    Time-based synchronous rectification in a power converter
    5.
    发明授权
    Time-based synchronous rectification in a power converter 有权
    电力转换器中的时基同步整流

    公开(公告)号：US07675281B1

    公开(公告)日：2010-03-09

    申请号：US11606462

    申请日：2006-11-30

    申请人： James Holt ,  Jonathan Klein

    发明人： James Holt ,  Jonathan Klein

    IPC分类号： G05F1/00

    CPC分类号： H02M3/1588 ,  Y02B70/1466

    摘要： In one embodiment, in a power converter system having first and second switches connected in a half-bridge arrangement at a common node from which current flows through an inductor to a regulated output terminal, wherein the regulated output terminal is connectable to a load, wherein the first and second switches are turned on and off in cycles, a method is provided for synchronous rectification. The method includes: initiating a cycle in which the first switch is turned on; developing a timer based on the on-time of the first switch during the cycle; turning off the first switch and turning on the second switch during the cycle; and outputting a control signal to turn off the second switch when either the timer expires or a new cycle is initiated to turn on the first switch, thereby providing synchronous rectification in the power converter system.

    摘要翻译： 在一个实施例中，在具有第一和第二开关的功率转换器系统中，第一和第二开关以半桥布置连接在电流流过电感器到公共节点的公共节点上，其中调节输出端子可连接到负载，其中 第一和第二开关的周期性接通和断开，提供了用于同步整流的方法。 该方法包括：启动第一开关导通的周期; 在周期期间基于第一开关的导通时间开发定时器; 在循环中关闭第一个开关并打开第二个开关; 并且当定时器期满或启动新周期以导通第一开关时输出控制信号以关闭第二开关，从而在功率转换器系统中提供同步整流。

    Barrier orifice valve for gas lift
    6.
    发明申请
    Barrier orifice valve for gas lift 有权
    隔气闸阀

    公开(公告)号：US20070181312A1

    公开(公告)日：2007-08-09

    申请号：US11347442

    申请日：2006-02-03

    申请人： James Kritzler ,  James Holt ,  Vic Randazzo ,  Walt Chapman

    发明人： James Kritzler ,  James Holt ,  Vic Randazzo ,  Walt Chapman

    IPC分类号： E21B43/00

    CPC分类号： E21B43/123 ,  Y10T137/2934

    摘要： Gas lift valve designs and gas lift systems are described that feature a positive closure mechanism that is highly resistant to significant wear or damage that would result in fluid leakage. A pivotable flapper member is incorporated into a gas lift valve and used as a flow control mechanism. The flapper member provides a positive barrier to fluid flow from the production tubing to the annulus, even after substantial wear or damage.

    摘要翻译： 描述了气体提升阀设计和气举系统，其特征在于具有高度抵抗将导致流体泄漏的显着磨损或损坏的积极闭合机构。 可枢转的挡板构件结合到气举阀中并用作流量控制机构。 挡板构件即使在大量磨损或损坏之后，也能从生产管道向环形空间提供积极的阻挡。

    Software development system with an executable working model in an interpretable intermediate modeling language
    8.
    发明授权
    Software development system with an executable working model in an interpretable intermediate modeling language 失效
    具有可解释中间建模语言的可执行工作模型的软件开发系统

    公开(公告)号：US06212672B1

    公开(公告)日：2001-04-03

    申请号：US08813487

    申请日：1997-03-07

    申请人： Steven Keller ,  Richard Gorzela ,  Daniel Strom ,  David Hughes ,  James Holt

    发明人： Steven Keller ,  Richard Gorzela ,  Daniel Strom ,  David Hughes ,  James Holt

    IPC分类号： G06F944

    CPC分类号： G06F8/35 ,  G06F17/5009

    摘要： A software development tool utilizes an intermediate object modeling language. The structure of the desired program is first described graphically by generating rule diagrams, state diagrams, and object diagrams such as user interface diagrams, event diagrams and other object diagrams. The development tool employs the diagrams to generate a working model of the program expressed in the object modeling language. The working model of the program can be executed without lengthy compiling, and hence program behavior can be quickly observed and tested. Further, the behavior of the working model can be quickly and easily changed by modifying the diagrams until the desired result is achieved. Source code is then generated from the object modeling language and compiled to create the final program.

    摘要翻译： 软件开发工具利用中间对象建模语言。 首先通过生成规则图，状态图和对象图（如用户界面图，事件图和其他对象图）来图形地描述所需程序的结构。 开发工具使用图来生成以对象建模语言表示的程序的工作模型。 程序的工作模式可以执行而不需要长时间的编译，因此可以快速观察和测试程序行为。 此外，通过修改图表可以快速方便地更改工作模型的行为，直到实现所需的结果。 源代码然后从对象建模语言生成并编译以创建最终程序。