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    • 1. 发明授权
    • Protective goods
    • 防护用品
    • US5935882A
    • 1999-08-10
    • US77852
    • 1998-06-04
    • Masakazu FujitaYoshio WakutaShiro Kumakawa
    • Masakazu FujitaYoshio WakutaShiro Kumakawa
    • A41D19/015A41D31/00A62B17/00B32B5/26
    • A62B17/005A41D19/01529A41D31/0027A41D31/0038A41D31/0066Y10T442/3537Y10T442/56Y10T442/59
    • The present invention provides protective goods, for example arctic clothing which allows long-time working even under the low temperature environment; said protective goods being characterized by excellent workability, heat-insulation and anti-static feature, without being hardened and embrittled, especially at the temperature of -10 degrees Celsius or below, further, under the environment of very low temperature such levels as -30 degrees Celsius or -60 degrees Celsius, furthermore even under the environment of extremely-low temperature on the level of -100 to -250 degrees Celsius. Protective goods made from a multiple-layer composite cloth, where the composite cloth comprises a surface fabric, an intermediate fibrous-insulator and a lining fabric, mainly composed of aramid fiber, respectively, wherein 1) the surface fabric and the lining fabric, comprises meta-aramid fiber by weight of 50 to 100 percent, para-aramid fiber by weight of 0 to 10 percent and other flame-retardant fiber by weight of 0 to 40 percent, with provision that the total weight-percent of meta-aramid fiber, para-aramid fiber and other flame-retardant fiber, is 100; 2) the intermediate fibrous-insulator comprises a multiple-laminated felt made from aramid fiber; and 3) electro-conductive yarns (a) are arranged along the lengthwise direction of the surface fabric at a density of 1 to 5 per inch and additional electro-conductive yarns and/or tapes (b) are arranged along the direction intersecting the lengthwise direction to form contact points with the electro-conductive yarns (a), whereby triboelectric charge on the outside surface of the protective goods is less than 0.6 micro-coulomb/m2.
    • PCT No.PCT / JP97 / 03544 Sec。 371日期:1998年6月4日 102(e)日期1998年6月4日PCT 1997年10月3日PCT PCT。 第WO98 / 15200BC号公报 日期1998年04月16日本发明提供防护品,例如北极服装,即使在低温环境下也能长时间工作; 所述防护用品的特点是具有优异的可加工性,隔热性和抗静电特性,而不会硬化和脆化,特别是在-10摄氏度或更低的温度下,进一步在非常低的温度环境下,如-30度 摄氏度或-60摄氏度,此外即使在极低温度的环境下,在-100至-250摄氏度的水平。 由多层复合布制成的防护物品,其中复合布分别包括主要由芳族聚酰胺纤维组成的表面织物,中间纤维绝缘体和衬里织物,其中1)表面织物和衬里织物包括 间位芳族聚酰胺纤维的重量比为50%至100%,对位芳族聚酰胺纤维的重量为0至10%,其他阻燃纤维的重量为0至40%,条件是间位芳族聚酰胺纤维的总重量百分比 对位芳族聚酰胺纤维等阻燃纤维,为100; 2)中间纤维绝缘体包括由芳族聚酰胺纤维制成的多层压毡; 和3)导电纱线(a)沿着表面织物的长度方向以每英寸1至5的密度布置,并且沿着与长度方向交叉的方向布置另外的导电纱线和/或带(b) 方向与导电纱线(a)形成接触点,由此防护物品的外表面上的摩擦电荷小于0.6微库仑/ m 2。
    • 6. 发明授权
    • Inverter device
    • 变频器
    • US09453860B2
    • 2016-09-27
    • US14795184
    • 2015-07-09
    • Masakazu Fujita
    • Masakazu Fujita
    • H02M7/539G01R19/04H02M7/537H02M3/335H02M1/00G01R31/42
    • G01R19/04G01R31/42H02M3/33523H02M7/537H02M2001/0019
    • An inverter device includes: a simulation output voltage generation unit that generates a simulation output voltage that corresponds to an instantaneous value of an alternating current output voltage and that has a waveform whose peak value is smaller than a peak value of the output voltage; a circuit that generates a peak value detection voltage by rectifying and smoothing the simulation output voltage; and a monitor circuit that compares the peak value detection voltage, or a voltage obtained by dividing the peak value detection voltage, with a reference voltage and transmits a feedback signal according to the result of the comparison to the control circuit. The control circuit changes a duty ratio of a switching signal for performing on/off control on the switching element in accordance with the feedback signal and controls the peak value detection voltage to keep a given value.
    • 逆变器装置包括:模拟输出电压产生单元,其生成与交流输出电压的瞬时值对应的模拟输出电压,并具有峰值小于输出电压的峰值的波形; 通过整流和平滑模拟输出电压产生峰值检测电压的电路; 以及将峰值检测电压或将峰值检测电压除以电压的电压与基准电压进行比较的监视电路,并根据比较结果向控制电路发送反馈信号。 控制电路根据反馈信号改变用于对开关元件进行接通/断开控制的开关信号的占空比,并且控制峰值检测电压以保持给定值。
    • 7. 发明申请
    • INVERTER DEVICE
    • 逆变器装置
    • US20160248336A1
    • 2016-08-25
    • US15044066
    • 2016-02-15
    • Hisahiro KamataYoshiyuki ShishidoMasakazu Fujita
    • Hisahiro KamataYoshiyuki ShishidoMasakazu Fujita
    • H02M5/458
    • H02M5/458H02M7/537H02M2001/0009
    • An inverter device applies an excitation current to an excitation winding of a step-up transformer through a switching element, and outputs an output voltage with an alternating-current half-wave waveform from an output winding of the step-up transformer. The inverter device includes: an input-voltage detecting unit that detects a state of the input voltage, as a voltage; a current detecting unit that converts a current flowing through the switching element into a voltage to detects the current; and a comparing unit that compares a detected current value detected by the current detecting unit with a detected input voltage value detected by the input-voltage detecting unit, and detects a high-current period in which the detected current value exceeds the detected input voltage value. Based on information indicating the high-current period detected by the comparing unit, the control circuit adjusts a period in which the switching element is turned on.
    • 逆变器装置通过开关元件向升压变压器的励磁绕组施加励磁电流,并且从升压变压器的输出绕组输出具有交流半波形的输出电压。 逆变器装置包括:输入电压检测单元,其将输入电压的状态检测为电压; 电流检测单元,其将流过开关元件的电流转换成电压以检测电流; 以及比较单元,其将由所述电流检测单元检测到的检测电流值与由所述输入电压检测单元检测出的检测输入电压值进行比较,并且检测检测到的电流值超过所检测的输入电压值的高电流周期 。 基于表示由比较部检测出的高电流期间的信息,控制电路调整开关元件导通的期间。