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    • 5. 发明申请
    • FIBER REINFORCED PLASTIC BOLT AND METHOD FOR PRODUCING THE SAME
    • 纤维增强塑料螺栓及其制造方法
    • US20120063866A1
    • 2012-03-15
    • US13321414
    • 2010-06-03
    • Hoon-Heui JeongYong-Min ParkHyun-Seok Kim
    • Hoon-Heui JeongYong-Min ParkHyun-Seok Kim
    • F16B35/00B65H81/08
    • F16B33/006B29C70/083B29C70/347B29C70/545B29L2001/002
    • A fiber reinforced plastic bolt(FRP) and a method for producing the same are disclosed. The FRP bolt is useful in the industrial areas which require a bolt having electric-insulation, anti-corrosive, thermal-insulation, and non-magnetic properties. The method for producing the FRP bolt includes the steps of: winding a prepreg around a surface of an internal body, wherein the internal body includes a first reinforcing fiber which is unidirectionally aligned along the axis of the bolt, and a synthetic resin which is impregnated into the first reinforcing fiber, and the prepreg includes a second reinforcing fiber and a thermosetting resin which is impregnated into the second reinforcing fiber; forming a fiber reinforced plastic round bar by heat-hardening the prepreg; and forming a screw thread on the surface of the fiber reinforced plastic round bar.
    • 公开了一种纤维增强塑料螺栓(FRP)及其制造方法。 FRP螺栓在需要具有电绝缘,防腐蚀,绝热和非磁性的螺栓的工业领域是有用的。 FRP螺栓的制造方法包括以下步骤:将预浸料卷绕在内体的表面周围,其中,内体包括沿着螺栓的轴线单向取向的第一增强纤维和浸渍了的合成树脂 进入第一增强纤维,并且预浸料包括浸渍到第二增强纤维中的第二增强纤维和热固性树脂; 通过对预浸料进行加热硬化来形成纤维增强塑料圆棒; 并在纤维增强塑料圆棒的表面上形成螺纹。
    • 9. 发明授权
    • Signal generation apparatus, frequency converting apparatus, and receiver
    • 信号发生装置,频率转换装置和接收机
    • US07598787B2
    • 2009-10-06
    • US11471121
    • 2006-06-20
    • Hyun-Seok Kim
    • Hyun-Seok Kim
    • H03H11/16
    • H03F3/45089H03B27/00H03C1/36H03F3/4508H03F2200/336H03F2203/45302H03F2203/45318H03F2203/45352H03F2203/45366H03F2203/45466H03F2203/45544H03K5/1565
    • A signal generation apparatus, a frequency converting apparatus and a receiver, in which the signal generation apparatus includes an oscillator, a duty cycle adjusting circuit, and a signal generation circuit. The oscillator generates differential signals. The duty cycle adjusting circuit adjusts duty cycles of differential output signals, in response to at least one of a plurality of control signals, to adjust phases of the differential output signals generated according to a result of amplifying a difference between the differential signals input through a pair of input terminals so as to output duty cycle adjusted differential output signals to a pair of output terminals. The signal generation circuit outputs an in-phase signal and a quadrature-phase signal in response to the duty cycle adjusted differential output signals. The frequency converting apparatus includes a first mixer for mixing an input signal with the in-phase signal and a second mixer for mixing the input signal and the quadrature-phase signal.
    • 信号发生装置,频率转换装置和接收机,信号发生装置包括振荡器,占空比调节电路和信号产生电路。 振荡器产生差分信号。 占空比调整电路响应于多个控制信号中的至少一个来调整差分输出信号的占空比,以调整根据通过a输入的差分信号之间的差放大产生的差分输出信号的相位 一对输入端子,以便将调整后的差分输出信号输出到一对输出端子。 信号发生电路响应于占空比调整的差分输出信号输出同相信号和正交相位信号。 该变频装置包括用于混合输入信号与同相信号的第一混频器和用于混合输入信号和正交相位信号的第二混频器。