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    • 71. 发明申请
    • Indenting Member for a Drill Bit
    • 压头成员
    • US20080029312A1
    • 2008-02-07
    • US11871644
    • 2007-10-12
    • David HallFrancis LeanyJohn Bailey
    • David HallFrancis LeanyJohn Bailey
    • E21B10/36E21B10/00
    • E21B10/46E21B10/43E21B10/54E21B10/62
    • A drill bit has a bit body intermediate a working face and a shank end adapted for connection to a downhole drill string. The working face has at least three fixed blades converging towards a center of the working face and diverging towards a gauge of the bit, at least one blade having a cone region adjacent the center of the working face. The cone region increases in height away from the center of the working face and towards a nose portion of the at least one blade. An opening is formed in the working face at the center of the bit along an axis of the drill bit's rotation, the opening leading into a chamber with at least one wall. An indenting member is disposed within and extends from the opening, is substantially coaxial with the axis of rotation, and is fixed to the wall of the chamber.
    • 钻头具有位于工作面之间的位体,以及适于连接到井下钻柱的柄端。 工作面具有至少三个固定刀片,其朝向工作面的中心会聚,朝向钻头的量规发散,至少一个叶片具有与工作面的中心相邻的锥形区域。 锥形区域的高度远离工作面的中心并且朝向至少一个叶片的鼻部分增加。 在钻头的中心处的工作面中沿着钻头旋转的轴线形成开口,该开口通向具有至少一个壁的腔室。 凹口构件设置在开口内并且从开口延伸,与旋转轴线基本上同轴,并且固定到腔室的壁。
    • 72. 发明申请
    • Downhole Coils
    • 井下线圈
    • US20080012569A1
    • 2008-01-17
    • US11860761
    • 2007-09-25
    • David HallCraig Boswell
    • David HallCraig Boswell
    • H01R4/24F16L55/00H01R11/00
    • E21B17/003E21B17/028E21B41/0085F16L15/006F16L15/08F16L25/01F16L25/021H01F38/14
    • In one aspect of the invention, a downhole tool string component comprises a tubular body with at least one end adapted for threaded connection to an adjacent tool string component. The end comprises at least one shoulder adapted to abut an adjacent shoulder of an adjacent end of the adjacent tool string component. An annular magnetic coupler is disposed within an annular recess formed in the at least one shoulder, and the magnetic coupler comprises a coil in electrical communication with an electrical conductor that is in electrical communication with an electronic device secured to the tubular body. The coil comprises a plurality of windings of wire strands that are electrically isolated from one another and which are disposed in an annular trough of magnetic material secured within the annular recess.
    • 在本发明的一个方面,一种井下工具串组件包括一个管状主体,其具有至少一个端部,用于与相邻工具组件的螺纹连接。 该端部包括至少一个肩部,其适于邻接相邻工具组件的相邻端部的相邻肩部。 环形磁耦合器设置在形成在至少一个肩部中的环形凹部内,并且磁耦合器包括与电导体电连通的线圈,电导体与固定到管状体的电子装置电连通。 线圈包括彼此电隔离并且设置在固定在环形凹部内的磁性材料的环形槽中的多个线束绕组。
    • 76. 发明申请
    • ADJUSTABLE SPEAKER SYSTEMS AND METHODS
    • 可调节扬声器系统和方法
    • US20070217619A1
    • 2007-09-20
    • US11749620
    • 2007-05-16
    • David HallBruce Hall
    • David HallBruce Hall
    • H04R29/00
    • H04S7/307H03G5/025H04S7/40
    • Systems and methods for optimizing speaker performance. The system includes a self-contained speaker unit that includes a speaker, an amplifier coupled to the speaker, and a processor coupled to the amplifier. The processor receives a first sound signal from a receiver and a second sound signal from a microphone, processes the first sound signal based on a plurality of parameters, outputs the processed sound signal to the speaker, and generates a video signal based on the second sound signal. A wireless remote control allows a user to manipulate the parameters. The processor generates a test sound signal and outputs it to the receiver. The receiver processes the test sound signal and returns it to the processor for output through the speaker. The video signal includes a graphical user interface having a frequency response graph of the second sound signal and an eight-band equalizer.
    • 优化扬声器性能的系统和方法。 该系统包括独立的扬声器单元,其包括扬声器,耦合到扬声器的放大器和耦合到放大器的处理器。 处理器接收来自接收器的第一声音信号和来自麦克风的第二声音信号,基于多个参数处理第一声音信号,将经处理的声音信号输出到扬声器,并且基于第二声音产生视频信号 信号。 无线遥控器允许用户操纵参数。 处理器产生测试声音信号并将其输出到接收器。 接收器处理测试声音信号并将其返回到处理器以通过扬声器输出。 视频信号包括具有第二声音信号的频率响应图和八频带均衡器的图形用户界面。