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    • 2. 发明授权
    • Dental x-ray diagnostic apparatus
    • 牙科X线诊断仪
    • US4200798A
    • 1980-04-29
    • US967363
    • 1978-12-07
    • Manfred NeuendorfErnst SchmittGustav Schubert
    • Manfred NeuendorfErnst SchmittGustav Schubert
    • A61B6/04A61B6/14G03B41/16
    • A61B6/0457A61B6/14A61B6/467A61B6/548
    • In an exemplary embodiment a unit which can be rotated about vertical axes, essentially comprises an x-ray tube and a film carrier, with a head support arranged therebetween and used for the support of a patient's head. The head support is adjustably arranged in a horizontal plane relative to a mounting therefor so the head can be held in various positions for various object exposures. The adjustable positions are marked on an index field according to the different object exposures and can be selected by means of position selectors. A scanning device having signal indicators is coupled to the position selectors so that the position of the head support relative to its mounting is determined, and so that when the selected position is reached, a signal activates a display element assigned to the respective actuated position selector and arranged in the index field (FIG. 3).
    • 在示例性实施例中,可围绕垂直轴线旋转的单元基本上包括X射线管和胶片载体,其中头部支撑件布置在其间并用于支撑患者头部。 头部支撑件相对于其安装可调节地布置在水平平面中,使得头部可以保持在用于各种物体曝光的各种位置。 根据不同的物体曝光,可调节位置在索引区域上进行标记,可以通过位置选择器进行选择。 具有信号指示器的扫描装置被耦合到位置选择器,使得头部支撑件相对于其安装件的位置被确定,并且使得当到达所选择的位置时,信号激活分配给相应的致动位置选择器的显示元件 并布置在索引字段(图3)中。
    • 3. 发明授权
    • Method and apparatus for compacting foundry mold making material about a
foundry mold pattern
    • 用于压铸铸造模具制造材料的铸造模具图案的方法和装置
    • US4915159A
    • 1990-04-10
    • US205436
    • 1988-06-10
    • Norbert DammErnst SchmittThomas Parr
    • Norbert DammErnst SchmittThomas Parr
    • B22C15/02B22C15/08B22C15/14
    • B22C15/08
    • To permit close matching of compaction pressure being applied to foundry mold making material, such as foundry sand, to the shape of a mold pattern (2) in a pattern box (3, 4), individual fluid pressure is applied to a plurality of press plungers (7) located on a pressure plate which is moved towards the sand in the mold box at a high rate of speed, the press plungers being biassed by fluid pressure to have a maximum difference (.DELTA.H) in stroke of penetration depth of at least 30% of the height (H) of the mold box; individual valves (14) can apply compressed air to individual cylinders under control, for example, of a microprocessor; the valves can be located in a matrix arrangement (FIG. 3). The method and apparatus can be used in combination with explosion or pressure impulse compaction and fluidizing of the foundry sand.
    • 为了允许将紧密匹配的压实压力施加到诸如铸造砂的铸造模具制造材料到图案盒(3,4)中的模具图案(2)的形状,将单独的流体压力施加到多个压力机 柱塞(7)位于压力板上,该压板以高速度移动到模具箱中的沙子上,压力机柱塞受到流体压力的偏压,以使得穿入深度的行程具有最大差异(DELTA H) 模具盒高度(H)的至少30%; 单个阀(14)可以将压缩空气施加到例如微处理器的控制下的各个气缸; 阀可以位于矩阵排列(图3)中。 该方法和装置可与爆炸或压力冲击压实和铸造砂流化结合使用。