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    • 53. 发明授权
    • Hook assembly with coated surfaces for sewing machine
    • 用于缝纫机的带有涂层表面的钩组件
    • US5651323A
    • 1997-07-29
    • US390481
    • 1995-02-17
    • Tokuzo HiroseKiyoshi Nakamura
    • Tokuzo HiroseKiyoshi Nakamura
    • D05B57/16
    • D05B57/16
    • A hook assembly includes a bearing rib on a bobbin case basket or at least a surface layer thereof composed of a synthetic resin, such as a liquid crystal polymer, which has properties such that the amount of the rotating friction generated between such surface layer and an inner surface layer of a groove shaped bearing raceway in which the bearing rib is fitted is lower, with no industrial sewing machine oil therebetween than such industrial sewing machine oil where to be provided therebetween. The hook assembly thus has good durability without any lubrication being provided. Accordingly, oil staining of threads and sewing materials by a lubricant is avoided, and sewing quality is enhanced.
    • 钩组件包括在梭壳篮或至少其表面层上的轴承肋,所述轴承肋由合成树脂(例如液晶聚合物)组成,其具有使得在所述表面层和所述表面层之间产生的旋转摩擦量 其中安装有轴承肋的槽形轴承滚道的内表面层较低,与其间要设置的工业缝纫机油相比,没有工业缝纫机油。 因此,钩组件具有良好的耐久性,而没有提供任何润滑。 因此,避免了通过润滑剂对纱线和缝纫材料的油污染,并且提高了缝纫质量。
    • 57. 发明授权
    • Apparatus and methods for detecting number of people waiting in an
elevator hall using plural image processing means with overlapping
fields of view
    • 使用具有重叠视野的多个图像处理装置来检测在电梯厅中等待的人数的装置和方法
    • US5298697A
    • 1994-03-29
    • US948255
    • 1992-09-21
    • Masato SuzukiHiromi InabaKiyoshi NakamuraNaofumi NakataHiroaki YamaniNaoto Oonuma
    • Masato SuzukiHiromi InabaKiyoshi NakamuraNaofumi NakataHiroaki YamaniNaoto Oonuma
    • B66B3/00B66B1/20B66B1/34H04N7/18
    • B66B1/3476B66B1/20
    • An apparatus for detecting people waiting for an elevator. A detecting unit detects the number of people waiting on the basis of an image from an image pickup unit and delivers that number to a corresponding second people waiting detecting unit. The apparatus includes a unit which generates a coefficient depending on a percentage of overlap of the field of view of a reference image pickup unit, which is one of several image pickup units, with the field of view of a different image pickup unit on the basis of data on the allocation of an elevator, and calculates the number of waiting people in the overall hall from the respective numbers of waiting people output from the plurality of image pickup units and those coefficients. The coefficient generating unit generates a maximum coefficient for the reference image pickup unit and a smaller coefficient for any remaining image pickup unit based on the of overlap of the field of view of the respective image pickup units. Thus, even if the fields of view of the plurality of image pickup units overlap, an accurate number of people waiting in the elevator hall, and free from an error in detection, is detected.
    • 一种用于检测等待电梯的人的装置。 检测单元基于来自图像拾取单元的图像来检测等待的人数,并将该数量传送到相应的第二人物等待检测单元。 该装置包括一个单元,该单元根据作为几个图像拾取单元之一的参考图像拾取单元的视场的重叠百分比,基于不同的图像拾取单元的视场来生成系数 关于电梯的分配的数据,并且从从多个摄像单元输出的相应的等待人数和那些系数来计算整个厅内的等待人数。 系数产生单元基于各个图像拾取单元的视场的重叠来产生用于参考图像拾取单元的最大系数和用于任何剩余图像拾取单元的较小系数。 因此,即使多个图像拾取单元的视场重叠,检测到在电梯厅中等待的准确数量的人,并且检测不到错误。
    • 59. 发明授权
    • Power conversion system
    • 电力转换系统
    • US5177677A
    • 1993-01-05
    • US489324
    • 1990-03-06
    • Kiyoshi NakataAkira KimuraYouji TakahashiYoshio TsutsuiKiyoshi NakamuraAtsushi Abe
    • Kiyoshi NakataAkira KimuraYouji TakahashiYoshio TsutsuiKiyoshi NakamuraAtsushi Abe
    • H02J7/14H02M7/219
    • H02M7/219H02J7/1492Y02T10/92
    • A power conversion system is disclosed in which a direct current is taken out of an AC power supply of variable frequency and variable voltage through a PWM converter in such a manner that in a region of low source voltage, the converter input current is limited to a predetermined value to maximize the DC power taking the voltage drop of the power supply into consideration with the power factor of "1" of the power supply, and when the current reaches an allowable maximum, it is limited to that value. In a region of high source voltage, on the other hand, the quadrature component of the input voltage applied to the source voltage is controlled preferentially in a manner to control the converter input voltage below a predetermined value, thus making it possible to secure the maximum power available from the converter over the entire range of operation. If a battery is connected to the DC side, a cooperative operation is made possible while the battery is charged properly.
    • 公开了一种电力转换系统,其中通过PWM转换器从可变频率和可变电压的AC电源中取出直流电流,使得在低电源电压的区域中,转换器输入电流被限制为 在电源的功率因数为“1”的情况下考虑电源的电压降使DC直流功率最大化,并且当电流达到容许最大值时,限制为该值。 另一方面,在高电源电压的区域,以优先控制施加于源极电压的输入电压的正交分量,以便将转换器输入电压控制在预定值以下,从而可以确保最大值 在整个操作范围内可以从转换器获得电力。 如果电池连接到直流侧,则在电池正常充电时可以进行协作操作。