Electron emitter and method of making same
    3.
    发明授权
    Electron emitter and method of making same 有权
    电子发射体及其制作方法

    公开(公告)号:US08498379B2

    公开(公告)日:2013-07-30

    申请号:US13465941

    申请日:2012-05-07

    IPC分类号: H01J35/00

    摘要: One example embodiment includes methods for making electron emitters. The electron emitter comprises a conductive member that defines a plurality of filament segments that are integral with each other. Each filament segment includes an intermediate portion and an interconnecting portion attached to an adjacent filament segment. The intermediate portions are substantially coplanar with each other and each intermediate portion includes a substantially planar electron emission surface.

    摘要翻译: 一个示例实施例包括用于制造电子发射器的方法。 电子发射器包括限定多个彼此成一体的细丝部分的导电部件。 每个细丝段包括中间部分和连接到相邻细丝部分的互连部分。 中间部分基本上彼此共面,并且每个中间部分包括基本上平面的电子发射表面。

    Thermionic emitter designed to provide uniform loading and thermal compensation
    5.
    发明授权
    Thermionic emitter designed to provide uniform loading and thermal compensation 有权
    热电发生器设计用于提供均匀的负载和热补偿

    公开(公告)号:US07903788B2

    公开(公告)日:2011-03-08

    申请号:US12238200

    申请日:2008-09-25

    IPC分类号: H01J35/06

    CPC分类号: H01J35/06 H01J2235/06

    摘要: An electron emitter assembly for use in an x-ray emitting device or other electron emitter-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum enclosure that houses both an anode having a target surface, and a cathode positioned with respect to the anode. The cathode includes an electron emitter having a plurality of substantially parallel emission surfaces that collectively emit a beam of electrons for impingement on the target anode. In one aspect, the plurality of substantially parallel emission surfaces are angled relative focusing region so as to provide a substantially uniform thermal load on the target anode. In another aspect, the electron emitter includes a plurality of cut-outs that accommodate thermal expansion in the plane of the emitter. Accommodating thermal expansion in the plane of the emitter prevents distortions to the emitter that would tend to alter the focusing of the electrons on the target anode. Providing a substantially uniform thermal load on the target anode and preventing thermal distortion of the emitter lead to higher x-ray flux and better focusing for higher quality x-ray images.

    摘要翻译: 公开了一种用于x射线发射器件或其它含电子发射器的器件中的电子发射器组件。 在一个实施例中,公开了一种X射线管,其包括容纳具有目标表面的阳极和相对于阳极定位的阴极的真空外壳。 阴极包括具有多个基本上平行的发射表面的电子发射体,其共同地发射用于冲击靶阳极的电子束。 在一个方面,多个基本平行的发射表面是成角度的相对聚焦区域,以便在目标阳极上提供基本均匀的热负荷。 在另一方面,电子发射器包括适应发射器平面热膨胀的多个切口。 在发射体的平面内容纳热膨胀可防止发射体发生变形,从而改变目标阳极上电子的聚焦。 在目标阳极上提供基本均匀的热负荷,并防止发射极的热变形导致更高的x射线通量,并更好地聚焦以获得更高质量的x射线图像。

    Composite stator
    6.
    发明授权
    Composite stator 失效
    复合定子

    公开(公告)号:US07127034B1

    公开(公告)日:2006-10-24

    申请号:US10358937

    申请日:2003-02-05

    IPC分类号: H01J35/10 H01J35/00

    摘要: A composite stator is disclosed for use with rotationally driven apparatus, particularly high voltage x-ray tubes. The composite stator generally comprises a core, a plurality of motor windings, and a retaining band. The core is comprised of two or more core sections having slots defined therein for receiving the motor windings. The motor windings are wound through and between the slots of the core sections, after which the core sections are joined together to form the core. The core sections are maintained in an assembled configuration by the retaining band. The motor windings are interconnected to comprise the electromagnetic pole pairs of the composite stator, thereby allowing the stator to induce the rotation of the rotor assembly of the high voltage x-ray tube.

    摘要翻译: 公开了一种用于旋转驱动设备,特别是高压x射线管的复合定子。 复合定子通常包括芯,多个电动机绕组和保持带。 芯部由两个或多个具有限定在其中用于接收电机绕组的槽的芯部分组成。 电动机绕组被卷绕在芯部分的槽之间,之后芯部分连接在一起以形成芯部。 芯部通过保持带保持在组装构造中。 马达绕组被互连以包括复合定子的电磁极对,从而允许定子引起高压x射线管的转子组件的旋转。

    Thermionic emitter designed to control electron beam current profile in two dimensions
    8.
    发明授权
    Thermionic emitter designed to control electron beam current profile in two dimensions 有权
    热电子发射器设计用于在二维中控制电子束电流分布

    公开(公告)号:US07924983B2

    公开(公告)日:2011-04-12

    申请号:US12165279

    申请日:2008-06-30

    申请人: Paul D. Moore

    发明人: Paul D. Moore

    IPC分类号: H01J35/06

    摘要: An electron emitter assembly for use in an x-ray emitting device or other electron emitter-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum enclosure that houses both an anode having a target surface, and a cathode positioned with respect to the anode. The cathode includes an electron emitter assembly for emitting a beam of electrons during tube operation. The electron emitter assembly comprises a refractory metal foil with a plurality of shaped rung structures for emitting an electron beam that maximizes flux while simultaneously focusing the electron beam in two dimensions. Focusing occurs primarily through an electrical field shaped by the electron emitter assembly and through balancing current density, electrical resistance, and heat loss through thermal conduction to control the regions that emit electrons. Furthermore, the refractory metal foil can be configured with a modified work function for preferential electron emission.

    摘要翻译: 公开了一种用于x射线发射器件或其它含电子发射器的器件中的电子发射器组件。 在一个实施例中,公开了一种X射线管,其包括容纳具有目标表面的阳极和相对于阳极定位的阴极的真空外壳。 阴极包括在管操作期间发射电子束的电子发射器组件。 电子发射器组件包括具有多个成形梯级结构的难熔金属箔,用于发射使通量最大化的电子束,同时将电子束聚焦在两个维度上。 聚焦主要通过由电子发射器组件形成的电场并且通过热传导平衡电流密度,电阻和热损失来发生,以控制发射电子的区域。 此外,难熔金属箔可以被配置成具有用于优先电子发射的修改功函数。

    Dial-up access response testing method and system therefor
    9.
    发明授权
    Dial-up access response testing method and system therefor 失效
    拨号访问响应测试方法及其系统

    公开(公告)号:US06480469B1

    公开(公告)日:2002-11-12

    申请号:US09212209

    申请日:1998-12-16

    IPC分类号: H04M124

    摘要: The present invention system automates the process of testing the integrity of the components residing at each node of a data network. After automatically dial connecting to a site of the network by selecting a telephone number from a retrieved list of telephone numbers each representing a site of the network, the instant invention sends a query directed to a particular component at the site. And depending on the response/non-response received, the instant invention can readily determine whether there is a problem with the being queried component. If there is a fault detected, this fault is reported either as a HTML file or a text file to either a web site or a data store, so that a technician can readily retrieve that information when needed. After all components at a site are tested, a report of the operational effectiveness of each of the components could be generated and provided either to the web site or dumped into the data store. Thereafter, the instant invention proceeds to retrieve a second telephone number from the list of telephone numbers and dial into the site to which that second telephone number relates. This process of automatically dial-in testing the components at a site is repeated until all telephone numbers, i.e. all sites, on the list have been contacted. The present invention system thereafter can repeat the process so that the integrity of the nodes of the data network can continuously be monitored.

    摘要翻译: 本发明系统自动化测试驻留在数据网络的每个节点处的组件的完整性的过程。 在通过从所检索的每个代表网络的站点的电话号码列表中选择一个电话号码自动拨号连接到网络的站点之后,本发明发送针对该站点的特定组件的查询。 并且,根据接收到的响应/不响应,本发明可以容易地确定被查询组件是否存在问题。 如果检测到故障,则将该故障作为HTML文件或文本文件报告给网站或数据存储,以便技术人员可以在需要时轻松检索该信息。 在站点的所有组件进行测试之后,可以生成每个组件的运行有效性的报告,并提供给网站或转储到数据存储中。 此后,本发明继续从电话号码列表中取回第二电话号码,并拨入该第二电话号码所关联的地点。 重复这个自动拨入测试网站中的组件的过程,直到所有电话号码,即列表上的所有站点都已被联系。 本发明系统此后可以重复该过程,使得可以连续地监视数据网络的节点的完整性。