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    • 1. 发明授权
    • Method and apparatus for the operation of rotary anode X-ray tubes
    • 用于操作旋转阳极X射线管的方法和装置
    • US4360734A
    • 1982-11-23
    • US254060
    • 1981-04-14
    • Kurt DietzRudolf Friedel
    • Kurt DietzRudolf Friedel
    • H01J35/10H05G1/66
    • H05G1/66H01J35/10
    • In an exemplary embodiment, a portion of the tube vacuum envelope is disposed between the rotor and stator of the anode drive motor. Taking into account the required high voltage safety, hitherto concessions as to the anode drive had to be made. The disclosure provides an improvement in this regard in that the anode and stator are connected to the same potential until a desired rotational frequency is attained. Only then, subsequent to disconnection of the drive voltage, is the radiography voltage applied for the necessary exposure period. If necessary, subsequently a braking voltage, or again a drive voltage, respectively, can be applied to the stator. Methods and installations in which, in accordance with the disclosure, the drive of the rotary anode is intensified, are, in particular, suited for utilization in medical x-ray diagnostics, mainly computer tomography.
    • 在示例性实施例中,管真空外壳的一部分设置在阳极驱动马达的转子和定子之间。 考虑到所需的高电压安全性,迄今为止必须对阳极驱动器做出让步。 在这方面,本公开提供了一种改进,因为阳极和定子连接到相同的电位,直到获得期望的转动频率。 只有在断开驱动电压之后,才能在必要的曝光期间施加放射线照相。 如果需要,则可以分别将制动电压或再次驱动电压施加到定子。 根据本公开,其中旋转阳极的驱动被增强的方法和装置特别适用于医疗X射线诊断,主要是计算机断层摄影。
    • 2. 发明授权
    • X-Ray tube
    • X射线管
    • US4468802A
    • 1984-08-28
    • US347714
    • 1982-02-10
    • Rudolf Friedel
    • Rudolf Friedel
    • H01J35/16H01J35/00
    • H01J35/16H01J2235/168
    • In an exemplary embodiment, a metallic shield for the discharge space between the cathode and the anode is connected to a potential which is greater than half the tube voltage and smaller than the entire tube voltage. What is achieved thereby is that backscatter electrons from the focal spot space are withdrawn and the anode load carrying capacity is thereby increased, and that the outside-of-focus component of the radiation is reduced as well. Moreover, a very close-to-focus definition or collimation of the cone of rays is possible. X-ray tubes according to the disclosure are particularly applicable in medical X-ray diagnostics.
    • 在示例性实施例中,用于阴极和阳极之间的放电空间的金属屏蔽件连接到大于管电压的一半并小于整个管电压的电位。 因此得到的结果是来自焦点空间的反向散射电子被撤回,从而阳极承载能力增加,并且辐射的外部焦点分量也减小。 此外,非常接近对焦的定义或准直的光线锥是可能的。 根据本公开的X射线管特别适用于医疗X射线诊断。
    • 7. 发明授权
    • Drive for rotary anodes of X-ray tubes
    • 驱动X射线管旋转阳极
    • US4426720A
    • 1984-01-17
    • US265672
    • 1981-05-20
    • Rudolf Friedel
    • Rudolf Friedel
    • H05G1/66H05G1/70
    • H05G1/66
    • In an exemplary embodiment, to reduce wear on the bearings of a rotary anode during radiography processes which require a high load of the tube, such as e.g. all types of series techniques, a control of the rotational frequency of the anode is effected according to which the rotational speed of the anode drive motor is increased as a function of increasing thermal load on the anode plate. For this purpose there takes place, in a static frequency changer, an increase of the frequency of the alternating current with which the motor is driven. The motor drive frequency can, for example, be controlled in dependence upon the temperature of the anode plate as sensed by a measuring probe. An inventive drive of rotary anodes is particularly suited for use in the case of X-ray examination apparatus, especially computer tomographs.
    • 在示例性实施例中,为了减少需要管的高负荷的射线照相过程中的旋转阳极轴承的磨损,例如, 所有类型的串联技术,对阳极的旋转频率的控制都是根据阳极驱动马达的旋转速度作为增加阳极板上的热负荷的函数来实现的。 为此,在静态变频器中,发生电机驱动的交流电流的频率增加。 电动机驱动频率可以例如根据由测量探针感测的阳极板的温度来控制。 旋转阳极的创新驱动特别适用于X射线检查装置,特别是计算机断层摄影机的情况。
    • 8. 发明授权
    • Rotatable anode for an X-ray tube composed of a coated, porous body
    • 用于由涂覆的多孔体组成的X射线管的可旋转阳极
    • US4271372A
    • 1981-06-02
    • US777916
    • 1977-03-16
    • Ernst GeldnerRudolf FriedelKlaus Haberrecker
    • Ernst GeldnerRudolf FriedelKlaus Haberrecker
    • H01J35/10H01J35/08B32B3/26H01J35/04
    • H01J35/108Y10T428/12097Y10T428/1216Y10T428/12174Y10T428/30
    • A rotatable anode for an X-ray tube comprising a body composed of a porous, difficult to melt material enclosed in a sealed fashion within an enveloping layer of a difficult to melt material, characterized by the porous body being of a material having a good thermal conductivity and a good thermal capacity and said porous body having its pores filled with a material having a good thermal conductance and being a good conductor of heat. The porous body is preferably a sintered porous body. The material of the porous body as well as the material of the enclosing layer are selected from a group consisting of tungsten, molybdenum, niobium, chromium, vanadium, titanium, carbon, alloys of these materials, and compounds of these materials. The filler material is preferably a metal selected from a group consisting of silver, gold, copper, aluminum, and alloys of these elements containing not less than a predominant proportion of at least one of these metals. The enveloping layer may be in the form of a sheet material container and lid which are tightly sealed together such as by welding or may be formed of a layer or coating of a portion of the porous body which layer or coating is tightly sealed to a sheet metal portion such as a lid.
    • 一种用于X射线管的可旋转阳极,包括由难熔物质的包封层中以密封方式包封的多孔难熔物质构成的主体,其特征在于,多孔体具有良好的热 导电性和良好的热容量,并且所述多孔体的孔隙填充有具有良好导热性并且是良好导热体的材料。 多孔体优选为烧结多孔体。 多孔体的材料以及封闭层的材料选自钨,钼,铌,铬,钒,钛,碳,这些材料的合金和这些材料的化合物。 填充材料优选为选自银,金,铜,铝的金属,以及这些元素的合金,其含有不少于这些金属中的至少一种的主要成分。 包封层可以是片材容器和盖子的形式,其通过焊接紧密地密封在一起,或者可以由多孔体的一部分的层或涂层形成,该层或涂层被紧密地密封到片材 金属部分如盖子。