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    • 18. 发明授权
    • Hydraulic unit for an anti-lock vehicle brake system
    • 用于防抱死车辆制动系统的液压单元
    • US06846050B2
    • 2005-01-25
    • US10636546
    • 2003-08-08
    • Isao InoueMichael SchlitzkusAndreas WehDouglas Patterson
    • Isao InoueMichael SchlitzkusAndreas WehDouglas Patterson
    • B60T8/36B60T17/02
    • B60T17/02B60T8/368Y10S303/10
    • The invention relates to a hydraulic unit for an anti-lock vehicle brake system, having a housing block with a first row of valve receiving chambers for receiving inlet valves, and a second row of valve receiving chambers for receiving outlet valves a pump receiving chamber, whose longitudinal axis extends at least approximately perpendicular to longitudinal axes of the valve receiving chambers and between the longitudinal axes of the valve receiving chambers of the first row and the longitudinal axes of the valve receiving chambers of the second row; low-pressure reservoir receiving chambers, which are disposed on a side, remote from the pump receiving chamber, of the valve receiving chambers of the second row, and whose longitudinal axis extends at least approximately perpendicular to the longitudinal axes of the valve receiving chambers and to the longitudinal axis of the pump receiving chamber; and a separate, direct connection between each valve receiving chamber of an outlet valve and an associated low-pressure reservoir receiving chamber.
    • 本发明涉及一种用于防抱死车辆制动系统的液压单元,其具有壳体块,该壳体具有用于接收入口阀的第一排阀接收室和用于接收出口阀的第二排阀接收室,泵接收室, 其纵向轴线至少大致垂直于阀接收室的纵向轴线延伸,并且在第一排的阀接收室的纵向轴线和第二排的阀接收室的纵向轴线之间延伸; 位于第二排的阀接收室的一侧远离泵接收室的低压储存器接收室,其纵向轴线至少大致垂直于阀接收室的纵向轴线延伸,并且 到泵接收室的纵向轴线; 以及在出口阀的每个阀接收室和相关联的低压储存器容纳室之间的单独的直接连接。
    • 19. 发明授权
    • Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers
    • 采用多个分段发射机和接收机的钻井同步测量系统
    • US06614360B1
    • 2003-09-02
    • US09590906
    • 2000-06-09
    • James V. Leggett, IIIVladimir DubinskyDouglas Patterson
    • James V. Leggett, IIIVladimir DubinskyDouglas Patterson
    • G01V300
    • E21B44/00E21B44/005G01V1/52
    • An acoustic MWD system comprises at least one transmitter array and at least one receiver array spaced axially along an essentially tubular downhole subassembly. Each transmitter and receiver array includes a plurality of elements circumferentially disposed on the outside of the assembly. The downhole subassembly also comprises a processor, data storage, telemetry elements, power supplies and control circuits as well as other types of sensors. In one embodiment of the invention, the transmitters are operated as a quadrupole in orthogonal orientations and signals from two receiver elements processed to attenuate common modes (including body waves through the tool, monopole waves and Stoneley waves). In another embodiment, the transmitters are used as crossed dipoles and signals received by cross-dipole receivers may be used to determine shear wave birefringence in the formation. In yet another embodiment, the transmitters are used as crossed dipoles and a single dipole receiver produces information relating to the birefringence: rotation of the drillstring makes it possible to operate the transmitters in two orthogonal orientations.
    • 声学MWD系统包括至少一个发射器阵列和沿着基本上管状的井下子组件沿轴向间隔开的至少一个接收器阵列。 每个发射器和接收器阵列包括周向设置在组件外部的多个元件。 井下子组件还包括处理器,数据存储器,遥测元件,电源和控制电路以及其它类型的传感器。 在本发明的一个实施例中,发射机作为正交取向的四极杆和来自被处理为衰减共模(包括通过工具的体波,单极波和斯通利波)的两个接收器元件的信号)操作。 在另一个实施例中,发射机用作交叉偶极子,并且可以使用由交叉偶极子接收器接收的信号来确定地层中的剪切波双折射。 在另一个实施例中,发射器用作交叉偶极子,并且单个偶极子接收器产生与双折射相关的信息:钻柱的旋转使得可以以两个正交取向操作发射器。