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16 条记录 (耗时 0.012 秒)

    Methods and systems for capacitive motion sensing and position control
    1.
    发明授权
    Methods and systems for capacitive motion sensing and position control 有权
    用于电容运动感测和位置控制的方法和系统

    公开(公告)号：US06661240B1

    公开(公告)日：2003-12-09

    申请号：US09678916

    申请日：2000-10-04

    申请人： Mark A. Johnson ,  Vivek Bhatt

    发明人： Mark A. Johnson ,  Vivek Bhatt

    IPC分类号： G01R2726

    CPC分类号： A61B6/589 ,  A61B5/11 ,  A61B6/04 ,  A61B6/10 ,  A61B2562/0257 ,  G01D5/2417 ,  H03K17/955

    摘要： A system for detecting motion and proximity by determining capacitance between a sensor and an object. The sensor includes sensing surfaces made of a thin film of electrically conductive material mounted on a non-conductive surface. In another embodiment, the sensor is a human body. The sensor senses the capacitance between a sensor's surface and an object in its vicinity and provides the capacitance to a control system that directs machine movement. Because the sensor does not require direct contact or line-of-sight with the object, a machine can be controlled before harm occurs to the object.

    摘要翻译： 通过确定传感器和物体之间的电容来检测运动和接近度的系统。 传感器包括由安装在非导电表面上的导电材料的薄膜制成的传感表面。 在另一个实施例中，传感器是人体。 传感器感测传感器表面和其附近物体之间的电容，并将电容提供给引导机器运动的控制系统。 因为传感器不需要与物体直接接触或视线，所以可以在物体发生伤害之前控制机器。

    Bearing assembly for X-ray tube
    3.
    发明授权
    Bearing assembly for X-ray tube 失效
    X射线管轴承组件

    公开(公告)号：US5991361A

    公开(公告)日：1999-11-23

    申请号：US013175

    申请日：1998-01-26

    申请人： Vivek Bhatt

    发明人： Vivek Bhatt

    IPC分类号： F16C25/08 ,  H01J35/10

    CPC分类号： F16C25/083 ,  H01J35/101 ,  H01J2235/1046

    摘要： An X-ray tube bearing assembly has a first X-ray tube shaft with first and second ball-bearing raceway surfaces which are integral with (i.e., either monolithic portions of or fixedly attached to) the first shaft and has a second X-ray tube shaft with a third ball-bearing raceway surface which is integral with the second shaft. A ball-bearing race, which is non-integral with (i.e., neither a monolithic portion of nor fixedly attached to) the two shafts, has a fourth ball-bearing raceway surface. A first set of ball bearings is located between the first and third raceway surfaces, and a second set of ball bearings is located between the second and fourth raceway surfaces. Preferably, an anode target surface is attached to the first shaft, and a mechanism is provided to preload the ball-bearing race.

    摘要翻译： X射线管轴承组件具有第一X射线管轴，其具有第一和第二球轴承滚道表面，该第一和第二球轴承滚道表面与第一轴成一体（即，整体部分或固定地附接于其），并具有第二X射线 管轴具有与第二轴成一体的第三滚珠轴承滚道表面。 与两个轴不整体（即既不是整体部分也不固定地连接）的球轴承座具有第四球轴承滚道表面。 第一组球轴承位于第一和第三滚道表面之间，第二组球轴承位于第二和第四滚道表面之间。 优选地，阳极靶表面附接到第一轴，并且设置有用于预加载球轴承座的机构。

    Flat panel detector based slot scanning configuration
    4.
    发明授权
    Flat panel detector based slot scanning configuration 有权
    基于平板检测器的插槽扫描配置

    公开(公告)号：US07200201B2

    公开(公告)日：2007-04-03

    申请号：US10990267

    申请日：2004-11-16

    申请人： Christopher D. Unger ,  David M. Hoffman ,  Vivek Bhatt

    发明人： Christopher D. Unger ,  David M. Hoffman ,  Vivek Bhatt

    IPC分类号： G01N23/04

    CPC分类号： G01T1/2018 ,  A61B6/027 ,  A61B6/06 ,  A61B6/4233 ,  A61B6/4291 ,  A61B6/588 ,  G01N23/04 ,  G01N23/20

    摘要： The present invention relates to a diagnostic X-ray device, system or apparatus for performing diagnostic radiology and a method of configuring such a diagnostic X-ray device, system or apparatus. More specifically, the present invention relates to a diagnostic system for forming at least one image of an object having enhanced contrast. The system comprises a beam source adapted to produce an imaging beam and a masking member adapted to form at least one beam portion from the imaging beam and adapted to image the object. The system further comprises a flat panel detector positioned in a path of at least one beam portion penetrating the object and adapted to form at least one image of the object.

    摘要翻译： 本发明涉及用于执行诊断放射学的诊断X射线装置，系统或装置以及配置这种诊断X射线装置，系统或装置的方法。 更具体地，本发明涉及用于形成具有增强的对比度的物体的至少一个图像的诊断系统。 该系统包括适于产生成像光束的光束源和适于从成像光束形成至少一个光束部分并适于对物体成像的掩蔽部件。 该系统还包括平板检测器，该平板检测器定位在至少一个光束部分穿过物体的路径中，并适于形成物体的至少一个图像。

    X-ray tube rotor and stator assembly
    8.
    发明授权
    X-ray tube rotor and stator assembly 失效
    X射线管转子和定子组件

    公开(公告)号：US5875227A

    公开(公告)日：1999-02-23

    申请号：US925294

    申请日：1997-09-08

    申请人： Vivek Bhatt

    发明人： Vivek Bhatt

    IPC分类号： H01J35/10

    CPC分类号： H01J35/101 ,  H01J2235/1046 ,  H01J2235/1086 ,  H01J2235/1208

    摘要： An X-ray tube assembly having bearings rotatably connecting a rotor shaft and a stator. A pair of circumferential protrusions each radially extend from the shaft and are spaced apart a first radial distance from the stator. A substance, which includes metal (such as gallium) and which is liquid at the assembly's operating temperature, is located longitudinally between the circumferential protrusions. The substance radially extends a second radial distance between, and in conductive thermal contact with, the shaft and the stator. Preferably, the second radial distance is greater than fifty times the first radial distance, and the first radial distance is between twenty and sixty microns.

    摘要翻译： 一种具有可旋转地连接转子轴和定子的轴承的X射线管组件。 一对周向突起各自从轴径向延伸并且与定子隔开第一径向距离。 包括金属（例如镓）并且在组件工作温度下为液体的物质纵向位于圆周突起之间。 该物质在轴和定子的导电热接触之间径向延伸第二径向距离。 优选地，第二径向距离大于第一径向距离的五十倍，并且第一径向距离在二十到六十微米之间。

    X-ray tube rotor and stator assembly
    10.
    发明授权
    X-ray tube rotor and stator assembly 失效
    X射线管转子和定子组件

    公开(公告)号：US6125168A

    公开(公告)日：2000-09-26

    申请号：US134113

    申请日：1998-08-14

    申请人： Vivek Bhatt

    发明人： Vivek Bhatt

    IPC分类号： H01J35/10

    CPC分类号： H01J35/101 ,  H01J2235/1046 ,  H01J2235/1086 ,  H01J2235/1208

    摘要： An X-ray tube assembly having bearings rotatably connecting a rotor shaft and a stator. A pair of circumferential protrusions each radially extend from the shaft and are spaced apart a first radial distance from the stator. In a first example, the protrusions are longitudinally outward of, and to one longitudinal side of, the pair of bearings, and one of the protrusions is longitudinally and radially proximate one of the bearings. In a second example, a line may be drawn which is parallel to the axis and which intersects each of the protrusions and each of the bearings. A substance, which includes metal (such as gallium) and which is liquid at the assembly's operating temperature, is located longitudinally between the circumferential protrusions. The substance radially extends a second radial distance between, and in conductive thermal contact with, the shaft and the stator.

    摘要翻译： 一种具有可旋转地连接转子轴和定子的轴承的X射线管组件。 一对周向突起各自从轴径向延伸并且与定子隔开第一径向距离。 在第一示例中，突出部在该一对轴承的纵向外侧和一个纵向侧上，并且其中一个突出部纵向地和径向地靠近其中一个轴承。 在第二个例子中，可以画出一条平行于轴线并与每个突起和每个轴承相交的线。 包括金属（例如镓）并且在组件工作温度下为液体的物质纵向位于圆周突起之间。 该物质在轴和定子的导电热接触之间径向延伸第二径向距离。