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    • 2. 发明申请
    • MULTI-PATH MULTI-STAGE EROSION-RESISTANT VALVE FOR DOWNHOLE FLOW CONTROL
    • 多通道多级防腐蚀阀门,用于井下流量控制
    • US20140224342A1
    • 2014-08-14
    • US14174575
    • 2014-02-06
    • Xiaoqi BaoMircea BadescuStewart SherritJeffery L. HallYoseph Bar-Cohen
    • Xiaoqi BaoMircea BadescuStewart SherritJeffery L. HallYoseph Bar-Cohen
    • E21B34/06
    • E21B34/10Y10T137/0368Y10T137/7738
    • A flow control valve for use in oil well bore holes is described. The flow control valve includes a plurality of flow paths connected in parallel. The flow control valve operates by successively opening different flow paths, starting with a flow path that requires a reduced force to operate its inlet valve. The flow rate through the flow control valve is conveniently controlled by opening and closing different ones of the plurality of flow paths individually or in combination. A flow path that allows fluid to flow at substantially the full flow rate of the valve is provided as one of the parallel paths. A simple mechanical design using poppet valves and at least one cam is described. The flow control valve provides advantages including digital control of the flow rate, low operating power requirements and abrasion resistance in the presence of particulates in the fluid.
    • 描述了一种用于油井钻孔的流量控制阀。 流量控制阀包括并联连接的多个流路。 流量控制阀通过依次打开不同的流动路径操作,从需要减小力来操作其入口阀的流动路径开始。 通过单独地或组合地打开和关闭多个流动路径中的不同流动方向来方便地控制通过流量控制阀的流量。 允许流体基本上以阀的全流量流动的流动路径被提供为平行路径之一。 描述了使用提升阀和至少一个凸轮的简单机械设计。 流量控制阀提供了在流体中存在微粒的情况下数字控制流量,低操作功率要求和耐磨性的优点。
    • 4. 发明授权
    • Ultrasonic rotary-hammer drill
    • 超声波旋转锤钻
    • US07740088B1
    • 2010-06-22
    • US11928069
    • 2007-10-30
    • Yoseph Bar-CohenMircea BadescuStewart SherritXiaoqi BaoSteve Kassab
    • Yoseph Bar-CohenMircea BadescuStewart SherritXiaoqi BaoSteve Kassab
    • E21B10/36
    • E21B6/08E21B7/24
    • A mechanism for drilling or coring by a combination of sonic hammering and rotation. The drill includes a hammering section with a set of preload weights mounted atop a hammering actuator and an axial passage through the hammering section. In addition, a rotary section includes a motor coupled to a drive shaft that traverses the axial passage through the hammering section. A drill bit is coupled to the drive shaft for drilling by a combination of sonic hammering and rotation. The drill bit includes a fluted shaft leading to a distal crown cutter with teeth. The bit penetrates sampled media by repeated hammering action. In addition, the bit is rotated. As it rotates the fluted bit carries powdered cuttings helically upward along the side of the bit to the surface.
    • 通过声音锤击和旋转的组合进行钻孔或取芯的机构。 该钻具包括锤击部分,其具有安装在锤击致动器顶部的一组预载重物和穿过锤击部分的轴向通道。 此外,旋转部分包括联接到驱动轴的马达,该马达横穿通过锤击部分的轴向通道。 钻头通过声音锤击和旋转的组合联接到驱动轴用于钻孔。 钻头包括通向具有齿的远端冠切割器的带槽轴。 该钻头通过重复的锤击动作穿透采样介质。 此外,该位被旋转。 当它旋转时,带槽的钻头沿着钻头的侧面向上螺旋形地加载表面的粉末切屑。
    • 6. 发明申请
    • Multi-radiation source-ferroelectric-based source of plurality of radiation types
    • 多辐射源 - 铁电型多种辐射源
    • US20060157656A1
    • 2006-07-20
    • US11035447
    • 2005-01-14
    • Yoseph Bar-CohenStewart SherritYakov KrasikJoshua FelsteinerXiaoqi Bao
    • Yoseph Bar-CohenStewart SherritYakov KrasikJoshua FelsteinerXiaoqi Bao
    • G21G4/00
    • H05G2/00H01J1/30H01J3/02H01J3/04H01J27/02H01J35/06H01J2201/306
    • The present invention provides a source of plurality of radiation types using a single source that is made of ferroelectric material in the form of a cathode. The generated radiation types consist of ion and electron beams, X-ray, visible light and ultraviolet radiation. These types allow testing the surface and bulk of the same medium while placed in the same location and are providing confirmation and independent measurements of the material properties. The cathode is made with a continuous electrode on one side and a grid shape electrode on the other. This cathode is supported with fixtures that are used to produce various radiation types. Also, control elements are used to define the shape and directivity of the emitted beam. The present invention eliminates the need for plurality of instruments for obtaining required properties of test materials covering both the surface and the bulk of the test medium. The disclosed source emits multiple types of charged particles and radiation using switchable electromechanical elements. The source performance is enhanced by use of a ferroelectric wafer with a high dielectric constant, and the control of the driving pulse shape. A set of stacks and arrays of multiplexed ferroelectric cathode wafers are used to offer various options in the design of the Ferrosource.
    • 本发明提供使用由阴极形式的铁电材料制成的单一源的多种辐射类型的源。 产生的辐射类型由离子和电子束,X射线,可见光和紫外线辐射组成。 这些类型允许在放置在相同位置时测试相同介质的表面和体积,并提供对材料性质的确认和独立测量。 阴极由一侧的连续电极和栅状电极构成。 该阴极由用于产生各种辐射类型的固定装置支撑。 此外,控制元件用于限定发射光束的形状和方向性。 本发明不需要多个仪器来获得覆盖测试介质的表面和体积的测试材料所需的性能。 所公开的源使用可转换的机电元件发射多种类型的带电粒子和辐射。 通过使用具有高介电常数的铁电晶片和驱动脉冲形状的控制来增强源性能。 复合铁电阴极晶片的一组堆叠和阵列被用于在Ferrosource的设计中提供各种选择。
    • 7. 发明申请
    • MONOLITHIC FLEXURE PRE-STRESSED ULTRASONIC HORNS
    • 单声弯曲预应力超声波
    • US20150298171A1
    • 2015-10-22
    • US14590971
    • 2015-01-06
    • Stewart SherritXiaoqi BaoMircea BadescuYoseph Bar-CohenPhillip Grant Allen
    • Stewart SherritXiaoqi BaoMircea BadescuYoseph Bar-CohenPhillip Grant Allen
    • B06B1/06
    • B06B1/06B06B3/00B23K20/10Y10T29/49826
    • A monolithic ultrasonic horn where the horn, backing, and pre-stress structures are combined in a single monolithic piece is disclosed. Pre-stress is applied by external flexure structures. The provision of the external flexures has numerous advantages including the elimination of the need for a pre-stress bolt. The removal of the pre-stress bolt eliminates potential internal electric discharge points in the actuator. In addition, it reduces the chances of mechanical failure in the actuator stacks that result from the free surface in the hole of conventional ring stacks. In addition, the removal of the stress bolt and the corresponding reduction in the overall number of parts reduces the overall complexity of the resulting ultrasonic horn actuator and simplifies the ease of the design, fabrication and integration of the actuator of the present invention into other structures.
    • 公开了一种整体式超声波喇叭,其中喇叭,背衬和预应力结构组合在一个整体上。 外部弯曲结构施加预应力。 提供外部挠曲具有许多优点,包括消除对预应力螺栓的需要。 去除预应力螺栓消除了执行机构中的潜在的内部放电点。 此外,它减少了由常规环形堆叠的孔中的自由表面引起的致动器堆叠中的机械故障的机会。 此外,去除应力螺栓和相应的零件数量的减少降低了所得超声波喇叭致动器的总体复杂性,并且简化了本发明的致动器的设计,制造和集成的容易性到其他结构 。
    • 9. 发明授权
    • Monolithic flexure pre-stressed ultrasonic horns
    • 单片弯曲预应力超声波喇叭
    • US08958270B2
    • 2015-02-17
    • US13178114
    • 2011-07-07
    • Stewart SherritXiaoqi BaoMircea BadescuYoseph Bar-CohenPhillip Grant Allen
    • Stewart SherritXiaoqi BaoMircea BadescuYoseph Bar-CohenPhillip Grant Allen
    • B06B3/00B23K20/10
    • B06B1/06B06B3/00B23K20/10Y10T29/49826
    • A monolithic ultrasonic horn where the horn, backing, and pre-stress structures are combined in a single monolithic piece is disclosed. Pre-stress is applied by external flexure structures. The provision of the external flexures has numerous advantages including the elimination of the need for a pre-stress bolt. The removal of the pre-stress bolt eliminates potential internal electric discharge points in the actuator. In addition, it reduces the chances of mechanical failure in the actuator stacks that result from the free surface in the hole of conventional ring stacks. In addition, the removal of the stress bolt and the corresponding reduction in the overall number of parts reduces the overall complexity of the resulting ultrasonic horn actuator and simplifies the ease of the design, fabrication and integration of the actuator of the present invention into other structures.
    • 公开了一种整体式超声波喇叭,其中喇叭,背衬和预应力结构组合在一个整体上。 外部弯曲结构施加预应力。 提供外部挠曲具有许多优点,包括消除对预应力螺栓的需要。 去除预应力螺栓消除了执行机构中的潜在的内部放电点。 此外,它减少了由常规环形堆叠的孔中的自由表面引起的致动器堆叠中的机械故障的机会。 此外,去除应力螺栓和相应的零件数量的减少降低了所得超声波喇叭致动器的总体复杂性,并且简化了本发明的致动器的设计,制造和集成的容易性到其他结构 。