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    X-ray tube with ferrite core filament transformer
    5.
    发明授权
    X-ray tube with ferrite core filament transformer 失效
    带铁氧体磁芯变压器的X射线管

    公开(公告)号：US5291538A

    公开(公告)日：1994-03-01

    申请号：US72400

    申请日：1993-06-03

    申请人： James E. Burke ,  Lester Miller ,  Salvatore G. Perno

    发明人： James E. Burke ,  Lester Miller ,  Salvatore G. Perno

    IPC分类号： H01J35/26 ,  H01J35/06 ,  H01J35/10 ,  H01J35/24 ,  H05G1/06 ,  H05G1/08 ,  H05G1/34 ,  H01J35/04

    CPC分类号： H05G1/34 ,  H01J35/06 ,  H01J35/10 ,  H01J35/24 ,  H05G1/06 ,  H05G1/08 ,  H01J2235/162

    摘要： An evacuated envelope (C) which is connected with an anode (A), has a cathode assembly (B) rotatably mounted inside. Magnets (44, 46) hold the cathode assembly stationary as the anode and envelope rotate. A ferrite core transformer (60) includes a ferrite core primary (66) stationarily mounted exterior to the envelope. A secondary (64) is mounted to the cathode assembly interior to the envelope. The secondary winding includes a ferrite core (70), a portion of which is surrounded by a ceramic, dielectric bobbin (76). The bobbin includes walls or ridges (78) which define a spiral groove (80) therearound in which an uninsulated electric wire (82) is received. The uninsulated electric wire is connected with a cathode filament (52). The primary winding has a ferrite core (90) that has about five times the cross section as the secondary ferrite core to compensate for a low, about 20%, coupling efficiency between the primary and secondary windings. Preferably, the primary winding core tapers (94) adjacent its pole faces to focus magnetic flux toward pole faces (72, 74) of the secondary ferrite core.

    摘要翻译： 与阳极（A）连接的真空外壳（C）具有可旋转地安装在内部的阴极组件（B）。 当阳极和外壳旋转时，磁体（44,46）将阴极组件固定住。 铁氧体磁芯变压器（60）包括固定在信封外部的铁氧体磁芯初级（66）。 次级（64）安装到阴极组件内部的信封。 次级绕组包括铁氧体磁芯（70），其一部分被陶瓷介质绕组（76）包围。 线轴包括限定在其周围的螺旋槽（80）的壁或脊（78），其中接收未绝缘的电线（82）。 非绝缘电线与阴极灯丝（52）连接。 初级绕组具有铁氧体磁芯（90），其具有作为次级铁氧体磁心的约5倍的横截面以补偿初级和次级绕组之间的低约20％的耦合效率。 优选地，初级绕组芯在其极面附近逐渐变细（94），以将磁通聚焦到次级铁氧体磁芯的极面（72,74）。

    Ring tube x-ray source
    6.
    发明授权
    Ring tube x-ray source 失效
    环管x射线源

    公开(公告)号：US5268955A

    公开(公告)日：1993-12-07

    申请号：US862805

    申请日：1992-04-08

    申请人： James E. Burke ,  Lester Miller

    发明人： James E. Burke ,  Lester Miller

    IPC分类号： H01J35/06 ,  H01J35/16 ,  H01J35/24 ,  H01J35/26 ,  H05G1/08 ,  H05G1/20 ,  H05G1/34 ,  H05G1/52 ,  H05G1/66 ,  H01J35/04

    CPC分类号： H01J35/045 ,  H01J35/06 ,  H01J35/165 ,  H01J35/24 ,  H05G1/025 ,  H05G1/08 ,  H05G1/20 ,  H05G1/34 ,  H05G1/52 ,  H05G1/66 ,  H01J2235/162

    摘要： A toroidal x-ray tube housing (A) has an evacuated interior. An annular anode (B) is connected with the housing closely adjacent the window such that a cooling fluid passage (12) is defined in intimate thermal communication with the anode. A cathode assembly (32) is mounted within the evacuated housing or an annular ring (30) that rotates an electron beam (22) around the large diameter annular anode. In the embodiment of FIGS. 1 and 2, the annular ring is magnetically levitated (40) and rotated by a motor (50). A collimator (62) and filter (64) are rotated with the cathode assembly closely adjacent an electron emitter or cathode cup (32) such that the generated x-rays are collimated and filtered within the x-ray tube. Preferably, a plurality of cathode cups (120) are provided, whose operation is selected by a series of magnetically controlled switches (76). The cathode cup is insulated (106) from the annular ring and isolated by a transformer (104, 112) from the filament current control switches. In the embodiment of FIGS. 4-6, the cathode assembly (C) includes a multiplicity of stationarily mounted electron cups (120) which are selectively actuated to rotate the electrode beam by a switch (130). An electron beam scan control (134) may bias the potential applied to grids (124, 126) to scan the electron beam generated by electron emitter over a commensurate arc length of the anode with the arc length of the emitter. In the embodiment of FIG. 7 , multiple anode surface as well as multiple cathode cups are provided.

    摘要翻译： 环形X射线管外壳（A）具有抽真空的内部。 环形阳极（B）与壳体紧邻窗口连接，使得冷却流体通道（12）被定义成与阳极紧密热连通。 阴极组件（32）安装在抽真空壳体内，或环形环（30），其围绕大直径环形阳极旋转电子束（22）。 在图1和图2的实施例中 如图1和图2所示，环形环被磁悬浮（40）并由电动机（50）旋转。 准直器（62）和过滤器（64）随着阴极组件靠近电子发射器或阴极杯（32）而旋转，使得所产生的x射线在x射线管内被准直和过滤。 优选地，提供多个阴极杯（120），其操作由一系列磁控开关（76）选择。 阴极杯与环形环绝缘（106），并与灯丝电流控制开关的变压器（104,112）隔离。 在图1和图2的实施例中 如图4-6所示，阴极组件（C）包括多个固定安装的电子杯（120），其被选择性地致动以通过开关（130）旋转电极束。 电子束扫描控制（134）可以偏置施加到栅极（124,126）上的电位，以扫描由电子发射器产生的与发射极的电弧长度相当的阳极长度的电子束。 在图1的实施例中 如图7所示，提供多个阳极表面以及多个阴极杯。

    ROTOR AND X-RAY CT SCANNERS
    7.
    发明申请
    ROTOR AND X-RAY CT SCANNERS 有权
    转子和X射线CT扫描仪

    公开(公告)号：US20100303209A1

    公开(公告)日：2010-12-02

    申请号：US12808695

    申请日：2008-12-16

    申请人： Randall Peter Luhta ,  Ronald Sharpless ,  Lester Miller

    发明人： Randall Peter Luhta ,  Ronald Sharpless ,  Lester Miller

    IPC分类号： H05G1/02

    CPC分类号： A61B6/56 ,  A61B6/035 ,  A61B6/4291

    摘要： The invention relates to a rotor comprising a radiation source having a focal spot for radiating beam towards a subject, detection means for generating signals responsive to energy attenuation of said beam and a circular body having a cavity for housing the radiation source, and a circle arc-shaped surface on which the detection means are mounted. The circle arc-shaped surface is placed opposite to the cavity with respect to the subject, said cavity comprising an inside surface mounted with a shield for shielding the radiation not towards the subject. In this way, the conventional housing for radiation source and shielding are removed, resulting in reduction of focal spot motion caused by motion of the conventional housing. Furthermore, this invention proposes to mount the detection means directly on the circular body without an intermediate structural housing that reduces the detector modules motion relative to the focal spot.

    摘要翻译： 本发明涉及一种包括辐射源的转子，该辐射源具有用于朝向被摄体辐射光束的焦点，用于产生响应于所述光束的能量衰减的信号的检测装置和具有用于容纳辐射源的空腔的圆形体，以及圆弧 形状的表面上安装有检测装置。 圆弧形表面相对于被检体与空腔相对放置，所述空腔包括安装有用于屏蔽辐射而不是朝向被检者的屏蔽的内表面。 以这种方式，用于辐射源和屏蔽的常规外壳被去除，导致由常规壳体的运动引起的焦点运动减少。 此外，本发明提出将检测装置直接安装在圆形主体上，而没有中间结构壳体，其减小了检测器模块相对于焦斑的运动。

    Automated envelope handling system
    8.
    发明授权
    Automated envelope handling system 失效
    自动信封处理系统

    公开(公告)号：US5147169A

    公开(公告)日：1992-09-15

    申请号：US707622

    申请日：1991-05-30

    申请人： Lester Miller ,  Szee M. Yao

    发明人： Lester Miller ,  Szee M. Yao

    IPC分类号： B43M7/00

    CPC分类号： B43M7/00 ,  Y10S73/11

    摘要： By providing a pair of vacuum manifolds positioned on opposite sides of an envelope travel path with the vacuum manifolds being laterally spaced apart, a unique, effective and dependable envelope handling system is achieved whereby the envelope sides are consistently separated and the contents removed therefrom and positioned in a readily accessible channel. Preferably, the envelope handling system also incorporates sensing devices for automatically and separately inspecting each side of the envelope to determine the presence of additional material which should be processed. In this way, any such material is automatically discovered for handling by the operator.

    摘要翻译： 通过设置一对真空歧管，其位于包封行进路径的相对侧上，真空歧管横向间隔开，实现了独特的，有效的和可靠的包封处理系统，由此可以一致地分离信封侧面并将内容物从中移出并定位 在一个容易获得的渠道。 优选地，信封处理系统还包括感测装置，用于自动和单独地检查信封的每一侧以确定应该被处理的附加材料的存在。 以这种方式，任何这样的材料被自动发现以供操作员处理。

    Automated envelope handling system
    9.
    发明授权
    Automated envelope handling system 失效
    自动信封处理系统

    公开(公告)号：US5052875A

    公开(公告)日：1991-10-01

    申请号：US458772

    申请日：1989-12-29

    申请人： Lester Miller ,  Szee M. Yao

    发明人： Lester Miller ,  Szee M. Yao

    IPC分类号： B43M7/00

    CPC分类号： B43M7/00 ,  Y10S73/11 ,  Y10S83/912

    摘要： By providing a pair of vacuum manifolds positioned on opposite sides of an envelope travel path with the vacuum manifolds being laterally spaced apart, a unique, effective and dependable envelope handling system is achieved whereby the envelope sides are consistently separated and the contents removed therefrom and positioned in a readily accessible channel. Preferably, the envelope handling system also incorporates a sensor for automatically and separately inspecting each side of the envelope to determine the presence of additional material which should be processed. In this way, any such material is automatically discovered for handling by the operator.

    摘要翻译： 通过设置一对真空歧管，其位于包封行进路径的相对侧上，真空歧管横向间隔开，实现了独特的，有效的和可靠的包封处理系统，由此可以一致地分离信封侧面，并将内容物从中移出并定位 在一个容易获得的渠道。 优选地，信封处理系统还包括用于自动和单独检查信封的每一侧的传感器，以确定应该被处理的附加材料的存在。 以这种方式，任何这样的材料被自动发现以供操作员处理。

    X-ray tube arc suppressor
    10.
    发明授权
    X-ray tube arc suppressor 失效
    X射线管电弧抑制器

    公开(公告)号：US5347571A

    公开(公告)日：1994-09-13

    申请号：US957219

    申请日：1992-10-06

    申请人： Avery D. Furbee ,  Lester Miller ,  Carl F. Bauer

    发明人： Avery D. Furbee ,  Lester Miller ,  Carl F. Bauer

    IPC分类号： H02H9/02 ,  H05G1/10 ,  H05G1/54

    CPC分类号： H05G1/10 ,  H05G1/54 ,  H02H9/02

    摘要： A high frequency voltage generator (10) produces a high positive voltage and a high negative voltage. A parallel connected coil (26) and diode (30) are connected between the high voltage supply and a target (44) of an x-ray tube (40). A second parallel connected coil (28) and diode (32) are connected between the negative voltage and an electron source (42) of the x-ray tube. The coils are preferably a multiple pancake design (FIG. 3 ). When the tube starts to arc, the sudden increase in current flow through the coil is converted and stored in a magnetic field leaving only a small current to contribute to arcing. The coils are sized such that the current which passes to the x-ray tube is sufficiently small that the arcing is usually extinguished without an avalanche phenomenon occurring. The diodes permit the energy stored in the magnetic field to be converted into a current flow through the coil and diode such that the energy is dissipated as heat by the inherent electrical resistance of the coil with only a minimal amount of the energy passing over time to the x-ray tube.

    摘要翻译： 高频电压发生器（10）产生高正电压和高负电压。 并联连接的线圈（26）和二极管（30）连接在高电压源和X射线管（40）的靶（44）之间。 第二并联线圈（28）和二极管（32）连接在负电压和X射线管的电子源（42）之间。 线圈优选为多煎饼设计（图3）。 当管开始电弧时，通过线圈的电流的突然增加被转换并存储在磁场中，仅留下小的电流以有助于电弧。 线圈的尺寸使得通过X射线管的电流足够小，使得通常在不发生雪崩现象的情况下熄灭电弧。 二极管允许存储在磁场中的能量转换成通过线圈和二极管的电流，使得能量通过线圈的固有电阻而被耗散，只有最小量的能量随时间传递到 x射线管。