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146 条记录 (耗时 0.055 秒)

    Method of forming polymer microspheres
    85.
    发明授权
    Method of forming polymer microspheres 失效
    形成聚合物微球的方法

    公开(公告)号：US5599889A

    公开(公告)日：1997-02-04

    申请号：US291163

    申请日：1994-08-16

    申请人： Harald D. H. Stover ,  Kai Li ,  Wen H. Li

    发明人： Harald D. H. Stover ,  Kai Li ,  Wen H. Li

    IPC分类号： C08F2/06 ,  C08F212/14

    CPC分类号： C08F2/06 ,  C08F212/14

    摘要： Disclosed herein is a method of forming cross-linked polymer microspheres, comprising the steps of:forming a reaction mixture essentially free of stabilizer and comprising a polymerization medium, a di-vinyl cross-linking agent, a functional co-monomer which is copolymerizable with said cross-linking agent and a radical initiator, with said cross-linking agent, said functional co-monomer and said initiator being soluble in said polymerization medium;subjecting said reaction mixture to conditions selected to form microspheres with two modes of stabilization, a first being provided by cross-linking, and a second being provided by short stabilizing chains extending outwardly from the microsphere and into said medium, said stabilizing chains having a sufficient concentration of said functional co-monomer to have steric stability in said medium.

    摘要翻译： 本文公开了形成交联聚合物微球的方法，包括以下步骤：形成基本上不含稳定剂的反应混合物，其包含聚合介质，二乙烯基交联剂，可共聚合的官能共聚单体 所述交联剂和自由基引发剂与所述交联剂，所述功能性共聚单体和所述引发剂可溶于所述聚合介质中; 使所述反应混合物经历所选择的条件以形成具有两种稳定模式的微球，第一种通过交联提供，第二种由短稳定链提供，其从微球向外延伸并进入所述介质，所述稳定链具有足够的 所述功能性共聚单体的浓度在所述介质中具有空间稳定性。

    Foldable storage bins
    86.
    外观设计
    Foldable storage bins 有权

    公开(公告)号：USD935776S1

    公开(公告)日：2021-11-16

    申请号：US29754849

    申请日：2020-10-15

    申请人： Kai Li

    设计人： Kai Li

    Basket
    88.
    外观设计
    Basket 有权

    公开(公告)号：USD901180S1

    公开(公告)日：2020-11-10

    申请号：US29738718

    申请日：2020-06-19

    申请人： Kai Li

    设计人： Kai Li

    Automatic-extending and anti-rotation scoliosis correcting system
    89.
    发明授权
    Automatic-extending and anti-rotation scoliosis correcting system 有权
    自动延伸和抗旋转脊柱侧弯矫正系统

    公开(公告)号：US09301784B2

    公开(公告)日：2016-04-05

    申请号：US13576207

    申请日：2011-01-28

    申请人： Sheng Zhao ,  Xiaochun Wei ,  Kai Li

    发明人： Sheng Zhao ,  Xiaochun Wei ,  Kai Li

    IPC分类号： A61B17/70

    CPC分类号： A61B17/7025 ,  A61B17/7004 ,  A61B17/701 ,  A61B17/7011 ,  A61B17/705

    摘要： A spontaneous-extending and anti-rotation scoliosis correcting system comprises pedicle screws and a plurality of correcting rods locked with the pedicle screws. Each correcting rod includes at least one sleeve and at least one inserting rod which can be inserted into the sleeve. The inner wall of the sleeve and the inserting rod are the same in shape and are in clearance fit. A positioning mechanism for restricting the relative rotation of the inserting rod with respect to the sleeve is arranged on a matching surface between the inserting rod and the sleeve. The scoliosis correcting system has the benefits of ensuring the lateral stability and the anti-rotation function for scoliosis correction; having the performance of spontaneous extending along the growth direction of the spine; and ensuring both the short-term operating effect and the long-term curative effect.

    摘要翻译： 自发延伸和抗旋转脊柱侧凸矫正系统包括椎弓根螺钉和多个与椎弓根螺钉锁定的矫正杆。 每个校正杆包括至少一个套筒和至少一个插入套筒中的插入杆。 套筒的内壁和插入杆的形状相同，并且间隙适合。 用于限制插入杆相对于套筒的相对旋转的定位机构布置在插入杆和套筒之间的匹配表面上。 脊柱侧凸矫正系统具有确保脊柱侧凸矫正的横向稳定性和抗旋转功能的好处; 具有沿脊柱生长方向自发延伸的性能; 确保短期作业效果和长期疗效。

    Fault diagnosis and preliminary location system and method for transformer core looseness
    90.
    发明申请
    Fault diagnosis and preliminary location system and method for transformer core looseness 有权
    变压器铁芯松动故障诊断及初步定位系统及方法

    公开(公告)号：US20140118003A1

    公开(公告)日：2014-05-01

    申请号：US14128603

    申请日：2012-07-19

    申请人： Kai Chen ,  Chunning Wang ,  Hongzhong Ma ,  Kai Li ,  Yiming Wu ,  Ying Zhang ,  Hongtao Liu ,  Peng Gao ,  Taotao Chen

    发明人： Kai Chen ,  Chunning Wang ,  Hongzhong Ma ,  Kai Li ,  Yiming Wu ,  Ying Zhang ,  Hongtao Liu ,  Peng Gao ,  Taotao Chen

    IPC分类号： G01R31/02

    CPC分类号： G01R31/027 ,  G01H1/00

    摘要： This invention publishes a fault diagnosis and location system for transformer core looseness, consists of vibration sensors, data collection and computer. It is of power transformer fault intelligent diagnosis technology technical field. Fault diagnosis and location method uses three vibration sensors positioned on the top of transformer tank, to obtain vibration signal, uses signal processing to analyze the signal, and obtains fault characteristics of the transformer core looseness. The characteristics respectively are 50 Hz, 150 Hz and 300 Hz frequency components, in which 300 Hz is main feature. When they reach a certain value at one position, it suggests that transformer core looseness near this position. By the comparison of differences among signals of three positions, fault location can be done. This invention manifests fault characteristics accurately and detects core looseness efficiently.The invention uses the electricity grid frequency of 50 Hz for example, for 60 Hz power system, above 50 Hz, 150 Hz, 300 Hz characteristic frequencies are 60 Hz, 180 Hz and 360 Hz.

    摘要翻译： 本发明公布了变压器磁芯松动故障诊断定位系统，由振动传感器，数据采集和计算机组成。 是电力变压器故障智能诊断技术技术领域。 故障诊断和定位方法采用位于变压器箱顶部的三个振动传感器，获得振动信号，采用信号处理分析信号，获得变压器磁芯松动的故障特征。 特性分别为50Hz，150Hz和300Hz频率分量，其中300Hz为主要特征。 当它们在一个位置达到一定值时，表明变压器芯在这个位置附近松动。 通过比较三个位置的信号之间的差异，可以进行故障定位。 本发明精确表现了故障特征，有效地检测了磁芯的松动。 本发明使用例如50Hz的电网频率，对于60Hz电力系统，高于50Hz，150Hz，300Hz特征频率为60Hz，180Hz和360Hz。