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    • 7. 发明授权
    • Process for producing optically active .alpha.-substituted organic acid
and microorganism and enzyme used therefor
    • 用于制备光学活性α-取代有机酸和微生物的方法及用于其的酶
    • US5283193A
    • 1994-02-01
    • US799879
    • 1991-11-27
    • Keizou YamamotoKazumasa OtsuboKazuhiko Oishi
    • Keizou YamamotoKazumasa OtsuboKazuhiko Oishi
    • C12N9/78C12P7/40C12P17/00C12P41/00
    • C12P17/00C12N9/78C12P41/006C12P7/40
    • A process for producing an optically active .alpha.-substituted organic acid represented by formula (II), comprising the steps of (a) treating a racemic substituted nitrile or amide represented by formula (I) with a microorganism selected from the group consisting of the microorganisms of genuses Alcaligenes, Pseudomonas, Rhodopseudomonas, Corynebacterium, Acinetobacter, Bacillus, Mycobacterium, Rhodococcus and Candida, or preparations thereof; and (b) recovering the resulting optically active u-substituted organic acid represented by formula (II): ##STR1## wherein R.sub.1 and R.sub.2 each represent a halogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryloxy group or a substituted or unsubstituted heterocyclic group with the proviso that R.sub.1 and R.sub.2 are different from each other; and X represents a nitrile group or an amido group, ##STR2## wherein R.sub.1 and R.sub.2 are as defined above.
    • 一种制备由式(II)表示的光学活性α-取代有机酸的方法,其包括以下步骤:(a)用选自以下的微生物处理由式(I)表示的外消旋的取代的腈或酰胺:微生物 属产碱杆菌,假单胞菌属,红假单胞菌属,棒状杆菌属,不动杆菌属,芽孢杆菌属,分枝杆菌属,红球菌属和假丝酵母属或其制剂; 和(b)回收由式(II)表示的所得光学活性的u取代的有机酸:其中R 1和R 2各自表示卤素原子,羟基,取代或未取代的烷基,取代的 或未取代的环烷基,取代或未取代的烷氧基,取代或未取代的芳基,取代或未取代的芳氧基或取代或未取代的杂环基,条件是R1和R2彼此不同; X表示腈基或酰胺基,其中R 1和R 2如上所定义。
    • 8. 发明授权
    • Hub structure for a rotary wing aircraft
    • 旋翼飞机的轮毂结构
    • US5228834A
    • 1993-07-20
    • US685646
    • 1991-04-16
    • Keizou YamamotoTakahiro IchihashiKanehiro HanayamaShunichi BandohAsao KakinumaTadashi Wakatsuki
    • Keizou YamamotoTakahiro IchihashiKanehiro HanayamaShunichi BandohAsao KakinumaTadashi Wakatsuki
    • B64C27/35B64C27/33B64C27/50B64C27/51
    • B64C27/51B64C27/33B64C27/50
    • A bearingless hub structure for a rotary-wing aircraft is provided, the structure including a hub body adapted to be securely connected to a rotor mast, a plurality of flexible beam members provided integrally with the hub body to extend radially outwardly, a pitch housing encircling each of the flexible beam members, and having a radially outward end portion which is rigid with a radially inward end portion of a rotor blade, a spherical bearing positioned adjacent to a radially inward end portion of the flexible beam member for supporting the pitch housing, a lead-lag damper positioned between the flexible beam member and the pitch housing, and the flexible beam members each having a flexible plate portion which is of a low bending rigidity in a flapping direction, a flexible portion provided radially outwardly of the flexible plate portion having a low bending rigidity in the lead-lag direction, and a twist-flex portion provided radially outwardly of the flexible portion. The flexible portion has two beam sections which have radially outward end portions integrally connected with a radially inward end portion of a twist-flex portion, with the radially inward end portions of the beam sections being removably connected to a radially outward end portion of the flexible plate portion at a plurality of circumferentially spaced positions.
    • 提供了一种用于旋转翼飞行器的无轴承轮毂结构,该结构包括适于牢固地连接到转子桅杆的轮毂体,与轮毂体一体地设置以径向向外延伸的多个柔性梁构件,围绕 每个柔性梁构件,并且具有与转子叶片的径向向内端部刚性的径向向外端部,与柔性梁构件的径向向内端部邻近定位的用于支撑间距壳体的球面轴承, 定位在柔性梁构件和间距壳体之间的先导滞后阻尼器,以及柔性梁构件,每个柔性梁构件具有柔性板部分,其在振动方向上具有低弯曲刚度;柔性部分径向向外设置在柔性板部分 在牵引滞后方向具有低弯曲刚性,以及设置在柔性部分的径向外侧的扭曲部。 柔性部分具有两个梁部分,其具有与扭曲部分的径向向内端部整体连接的径向外端部分,梁部分的径向向内端部可移除地连接到柔性部分的径向向外端部分 板部分在多个周向间隔位置处。