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    • 1. 发明授权
    • Twelve-step current source inverter
    • 十二电流源逆变器
    • US4276589A
    • 1981-06-30
    • US27098
    • 1979-04-04
    • Tadashi OkawaMitsuyuki HonbuYasuo MatsudaTakanori ShibataToshio Kawaguchi
    • Tadashi OkawaMitsuyuki HonbuYasuo MatsudaTakanori ShibataToshio Kawaguchi
    • H02M7/515H02M1/12
    • H02M7/49
    • At least one smoothing reactor is connected to the positive terminal of a DC source. A first interphase reactor has its one end connected to the other end of the smoothing reactor. A second interphase reactor is connected to the negative terminal of the DC source. Each of the first and second interphase reactors has first and second terminals at the other end thereof. Connected between the first terminals of the first and second interphase reactors is a first inverter comprising three main valves on each side of the positive and negative terminals, i.e., a total of six main valves each having a control gate and forming a first three-phase bridge. Also connected between the second terminals of the first and second interphase reactors is a second inverter comprising three main valves arranged on each side of the positive and negative terminals, i.e., a total of six main valves each having a control gate and forming a second three-phase bridge. The three-phase output terminals of the first and second inverters are respectively connected in common to a load to supply first-phase, second-phase and third-phase output currents to the load. A control unit applies control gate pulses to the control gates of the positive-terminal-side and negative-terminal-side main valves of the first and second inverters in the order of the first, second and third phases to shape the waveform of each output current to the load into a rectangular waveform. The control unit controls the first and second inverters in such a manner that the current valves of two currents which flow to the main valves of the first and second inverters having the same phase and polarity includes ranges in which the currents periodically assume the same current value.
    • 至少一个平滑电抗器连接到直流电源的正极端子。 第一相间反应器的一端连接到平滑反应器的另一端。 第二相间电抗器连接到直流电源的负极端子。 第一和第二相间反应器中的每一个在其另一端具有第一和第二端子。 连接在第一和第二相间电抗器的第一端子之间的是第一逆变器,其包括在正端子和负端子的每一侧上的三个主阀,即总共六个主阀,每个具有控制栅极并形成第一三相 桥。 还连接在第一和第二相间电抗器的第二端子之间的是第二逆变器,其包括布置在正端子和负端子的每一侧上的三个主阀,即总共六个主阀,每个主阀具有控制门并形成第二三通 相桥。 第一和第二逆变器的三相输出端分别共同连接到负载,以向负载提供第一相,第二相和第三相输出电流。 控制单元按照第一相,第二相和第三相的顺序向第一和第二反相器的正端侧和负端侧主控制阀的控制栅施加控制栅脉冲,以形成每个输出的波形 电流到负载成矩形波形。 控制单元以这样的方式控制第一和第二逆变器,使得流过具有相同相位和极性的第一和第二反相器的主阀的两个电流的电流阀包括电流周期性地具有相同电流值的范围 。
    • 4. 发明授权
    • Adhesive composition for denture base relining material and dental curable composition
    • 义齿基础修复材料和牙科固化组合物的粘合剂组合物
    • US07056961B2
    • 2006-06-06
    • US10433420
    • 2001-12-03
    • Mitsuhiro YamashitaToshio KawaguchiMasanao Hashiguchi
    • Mitsuhiro YamashitaToshio KawaguchiMasanao Hashiguchi
    • A61K6/083A61C5/00
    • A61K6/0026C08L33/12
    • An adhesive composition for a denture base relining material which comprises an organic solvent containing no halogen atoms such as ethyl acetate, ethyl formate or acetone, a polymer such as a copolymer of methyl methacrylate and ethyl methacrylate, and a radical polymerizable monomer such as tetramethylolmethane tetramethacrylate; and a curable composition which comprises a radical polymerizable monomer, an organic peroxide such as benzoyl peroxide, a tertiary amine compound such as diethyl-p-toluidine or dipropyl-p-toluidine, and a hydroxycarboxylic acid such as malic acid or citric acid.The adhesive composition for a denture base relining material does not contain a halogen-atom-containing organic solvent whose harmful effect has been pointed out. Further, the composition has satisfactory adhesive properties and good operability and causes no degradation in the appearance of a denture base even if it sticks to an area on the surface of the denture base other than a contact area. The dental curable composition is widely used as dental materials having little surface unpolymerized layer and good curability, e.g., dental cement, a composite resin, a resin for crown and a denture base relining material.
    • 一种用于假牙基复合材料的粘合剂组合物,其包含不含卤素原子的有机溶剂如乙酸乙酯,甲酸乙酯或丙酮,聚合物如甲基丙烯酸甲酯和甲基丙烯酸乙酯的共聚物,以及可自由基聚合的单体如四羟甲基甲烷四甲基丙烯酸酯 ; 和可自由基聚合的单体,有机过氧化物如过氧化苯甲酰,叔胺化合物如二乙基对甲苯胺或二丙基对甲苯胺,以及羟基羧酸如苹果酸或柠檬酸的可固化组合物。 用于义齿底座修复材料的粘合剂组合物不含含有卤素原子的有机溶剂,其有害影响已被指出。 此外,该组合物具有令人满意的粘合性能和良好的可操作性,并且即使粘附到假牙基底表面上除接触区域之外的区域,也不会使义齿基底的外观劣化。 牙科用固化性组合物广泛用作具有很少的表面未聚合层和良好固化性的牙科材料,例如牙科水泥,复合树脂,冠状树脂和义齿基础修复材料。