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    • 1. 发明申请
    • Polycarbonate resin composition and molded articles with the same
    • 聚碳酸酯树脂组合物及其成型品
    • US20060094820A1
    • 2006-05-04
    • US11260700
    • 2005-10-27
    • Bong LeeKyung KimSung MinJong Lim
    • Bong LeeKyung KimSung MinJong Lim
    • C08L51/00
    • C08L69/00C08L23/00C08L51/00C08L67/03C08L2205/12C08L2666/02
    • A polycarbonate composition and its use as a molded article and as housing or a part of electronic device are disclosed. The polycarbonate composition includes a polycarbonate resin, a liquid crystalline polymer resin, a core-shell grafted copolymer and a low molecular weight polyolefin. The composition has an impact strength of at least about 68 kg·cm/cm when a specimen of the composition is subject to a chemical treatment and the chemically treated specimen is tested according to the standard ASTM D256 (⅛″ notched). The composition has an impact resistance of exhibiting substantially no cracking when a specimen of the composition is subject to a chemical treatment and the chemically treated specimen is tested at 0.6 m according to the standard ASTM D3029. The chemical treatment includes submerging the specimen in paint thinner for 20 seconds and thereafter drying the specimen at 70° C. for 5 minutes. Further, the composition has a fatigue resistance of at least about 130,000 when a specimen of the composition is tested at 4000 psi at 5 times per second according to the standard ASTM D638.
    • 公开了一种聚碳酸酯组合物及其作为模制品和作为壳体或电子器件的一部分的用途。 聚碳酸酯组合物包括聚碳酸酯树脂,液晶聚合物树脂,核 - 壳接枝共聚物和低分子量聚烯烃。 当组合物的试样进行化学处理并根据标准ASTM D256(1/8“缺口)测试化学处理的试样时,该组合物具有至少约68kg.cm / cm的冲击强度。 当组合物的试样进行化学处理并且根据标准ASTM D3029在0.6μm下测试化学处理的试样时,该组合物具有显着实质上没有破裂的抗冲击性。 化学处理包括将样品浸入漆料稀释剂20秒,然后在70℃下干燥试样5分钟。 此外,当根据标准ASTM D638以4000psi每秒5次测试组合物的样品时,组合物的耐疲劳性为至少约130,000。
    • 5. 发明申请
    • Flat type piezoelectric ultrasonic motor
    • 扁平型压电超声波电机
    • US20060108895A1
    • 2006-05-25
    • US11082004
    • 2005-03-16
    • Jung RyuDae JeongSung MinByung KangHyung ChoiBurhanettin Koc
    • Jung RyuDae JeongSung MinByung KangHyung ChoiBurhanettin Koc
    • H02N2/00
    • H02N2/16
    • There is provided a flat type piezoelectric ultrasonic motor for generating a rotation force to a rotor by ultrasonic vibrations. In the piezoelectric ultrasonic motor, a vibrator is formed of elastic material at a given size, a plurality of piezoelectric plates are attached on the vibrator, a rotor is drivingly connected to the vibrator thereby to be rotated, and a power source unit applies driving voltages to the piezoelectric plates. The piezoelectric plates are arranged on quartered surface areas of the vibrator in such a way that longitudinal axes of neighboring piezoelectric plates form a given angle therebetween and opposing piezoelectric plates have opposite polarizations, and the power source unit applies alternating driving voltages to the piezoelectric plates thereby to make the rotor rotated, thereby making it possible to simplify the piezoelectric plates' shape, minimize its size and enhance its driving efficiency.
    • 提供了一种用于通过超声波振动向转子产生旋转力的平面型压电超声波马达。 在压电超声波马达中,振动器由给定尺寸的弹性材料形成,多个压电板安装在振动器上,转子驱动地连接到振动器从而旋转,电源单元将驱动电压 到压电板。 压电板被布置在振动器的四分之一的表面区域上,使相邻的压电板的纵向轴线在其间形成给定的角度,相对的压电板具有相反的极化,并且电源单元向压电板施加交替的驱动电压 以使转子旋转,从而可以简化压电板的形状,使其尺寸最小化并提高其驱动效率。