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    • 3. 发明授权
    • Swivel assembly
    • 旋转总成
    • US07193527B2
    • 2007-03-20
    • US10710825
    • 2004-08-05
    • David R. HallDavid S. PixtonMichael BriscoeKline BradfordMichael RawleDavid B. BartholomewJames McPherson
    • David R. HallDavid S. PixtonMichael BriscoeKline BradfordMichael RawleDavid B. BartholomewJames McPherson
    • G01V3/00
    • G01V11/002Y10T403/17Y10T403/32213
    • A swivel assembly for a downhole tool string comprises a first and second coaxial housing cooperatively arranged. The first housing comprises a first transmission element in communication with surface equipment. The second housing comprises a second transmission element in communication with the first transmission element. The second housing further comprises a third transmission element adapted for communication with a network integrated into the downhole tool string. The second housing may be rotational and adapted to transmit a signal between the downhole network and the first housing. Electronic circuitry is in communication with at least one of the transmission elements. The electronic circuitry may be externally mounted to the first or second housing. Further, the electronic circuitry may be internally mounted in the second housing. The electronic circuitry may be disposed in a recess in either first or second housing of the swivel.
    • 用于井下工具串的旋转组件包括协同地布置的第一和第二同轴壳体。 第一壳体包括与表面设备连通的第一传动元件。 第二壳体包括与第一传动元件连通的第二传动元件。 第二壳体还包括适于与集成在井下工具串中的网络通信的第三传动元件。 第二壳体可以旋转并且适于在井下网络和第一壳体之间传输信号。 电子电路与至少一个传输元件通信。 电子电路可以从外部安装到第一或第二壳体。 此外,电子电路可以内部安装在第二壳体中。 电子电路可以设置在旋转体的第一或第二壳体中的凹部中。
    • 5. 发明申请
    • Electrosurgical system employing multiple electrodes and method thereof
    • 采用多电极的电外科系统及其方法
    • US20060079886A1
    • 2006-04-13
    • US11242217
    • 2005-10-03
    • James OrszulakJames McPherson
    • James OrszulakJames McPherson
    • A61B18/14
    • A61B18/1206A61B18/1233A61B2018/00011A61B2018/00577A61B2018/124A61B2018/143
    • A system for heat ablation of tissue in a patient comprises a plurality of electrodes operatively connected to a source of radiofrequency energy and configured to apply RF energy to tissue at a patient site, a plurality of RF current restricting circuits, each circuit coupled between one of the plurality of electrodes and the source of radiofrequency energy, and configured to restrict RF energy to the electrode when the current restricting circuit is enabled and not restrict RF energy to flow to the electrode when the current restricting circuit is disabled, at least one return electrode adapted to contact the patient and configured to return RF energy to the RF source; and a switching mechanism configured to selectively enable each of the plurality of RF current restricting circuits, in one of a sequential and non sequential fashion, wherein the switching mechanism is isolated from each of the current restricting circuits.
    • 用于患者组织的热消融的系统包括可操作地连接到射频能量源的多个电极,并且被配置为将RF能量施加到患者部位的组织,多个RF电流限制电路,每个电路耦合在 所述多个电极和所述射频能量源,并且被配置为当所述电流限制电路被使能时将RF能量限制到所述电极,并且当所述电流限制电路被禁用时不限制RF能量流向所述电极;至少一个返回电极 适于接触患者并被配置为将RF能量返回到RF源; 以及开关机构,其被配置为以顺序和非顺序方式中的一个选择性地使能所述多个RF电流限制电路中的每一个,其中所述开关机构与每个所述电流限制电路隔离。
    • 6. 发明申请
    • Filter for a Drill String
    • 过滤钻柱
    • US20060065444A1
    • 2006-03-30
    • US10711596
    • 2004-09-28
    • David HallDavid PixtonMichael BriscoeJames McPherson
    • David HallDavid PixtonMichael BriscoeJames McPherson
    • E21B43/34
    • E21B21/002E21B17/003E21B47/122
    • A filter for a drill string comprises a perforated receptacle having an open end and a perforated end and first and second mounting surfaces are adjacent the open end. A transmission element is disposed within each of the first and second mounting surfaces. A capacitor may modify electrical characteristics of an LC circuit that comprises the transmission elements. The respective transmission elements are in communication with each other and with a transmission network integrated into the drill string. The transmission elements may be inductive couplers, direct electrical contacts, or optical couplers. In some embodiments of the present invention, the filter comprises an electronic component. The electronic component may be selected from the group consisting of a sensor, a router, a power source, a clock source, a repeater, and an amplifier.
    • 用于钻柱的过滤器包括具有开口端和穿孔端部的穿孔接插件,并且第一和第二安装表面邻近开口端。 传动元件设置在每个第一和第二安装表面内。 电容器可以改变包括传输元件的LC电路的电气特性。 相应的传输元件彼此通信并且与传输网络集成在钻柱中。 传输元件可以是感性耦合器,直接电触点或光耦合器。 在本发明的一些实施例中,滤波器包括电子部件。 电子部件可以选自传感器,路由器,电源,时钟源,中继器和放大器。
    • 10. 发明授权
    • Management system for distributed out-of-band security databases
    • 分布式带外安全数据库管理系统
    • US06678826B1
    • 2004-01-13
    • US09150428
    • 1998-09-09
    • Tadhg KellyDon SnookJames McPhersonWai Kong Sung
    • Tadhg KellyDon SnookJames McPhersonWai Kong Sung
    • G06F1730
    • G06F17/30575Y10S707/99939
    • For use during maintenance of wide area networks, a management system is disclosed for distributing security databases to security gates at each maintenance port of each network element. A distributed database manager is provided to instantaneously update the databases and gather from each database transaction records. Central to the distributed database manager is a software program that polls the security databases located at each of the network elements, deposits updated databases, and formats various management reports from transaction records and from device failure records (generated by the program). The software program enables the database manager to communicate with the network elements through either an in-band channel or an out-of-band channel. By shifting authentication of access seekers to security databases resident at each console port, security is maintained even though the network server is not in service. Using existing technology, all communications between the distributed database manager and the security database is in encrypted form.
    • 为了在广域网的维护期间使用,公开了一种用于在每个网元的每个维护端口处将安全数据库分发到安全门的管理系统。 提供一个分布式数据库管理器来即时更新数据库并从每个数据库交易记录中收集。 分布式数据库管理器的中心是一个软件程序,它轮询位于每个网络元素的安全数据库,存储更新的数据库,以及从事务记录和设备故障记录(由程序生成)来格式化各种管理报告。 软件程序使数据库管理器能够通过带内通道或带外通道与网络元件进行通信。 通过将访问请求者的身份验证转移到驻留在每个控制台端口的安全数据库,即使网络服务器不在服务中,也会保持安全性。 使用现有技术,分布式数据库管理器和安全数据库之间的所有通信都是加密形式。