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186 条记录 (耗时 0.031 秒)

    Powder mixture for use in compaction to produce rare earth iron sintered permanent magnets
    54.
    发明授权
    Powder mixture for use in compaction to produce rare earth iron sintered permanent magnets 失效
    用于压实生产稀土铁烧结永磁体的粉末混合物

    公开(公告)号：US5486224A

    公开(公告)日：1996-01-23

    申请号：US364315

    申请日：1994-12-27

    申请人： Yoshihisa Kishimoto ,  Nobushige Hiraishi ,  Wataru Takahashi ,  Masakazu Ohkita ,  Naoyuki Ishigaki ,  Yutaka Matsuura

    发明人： Yoshihisa Kishimoto ,  Nobushige Hiraishi ,  Wataru Takahashi ,  Masakazu Ohkita ,  Naoyuki Ishigaki ,  Yutaka Matsuura

    IPC分类号： C22C1/04 ,  H01F1/057 ,  B22F1/00

    CPC分类号： H01F1/0577 ,  C22C1/0441 ,  Y10T428/2991

    摘要： To a fine R--Fe--B alloy powder comprised predominantly of 10-30 atomic % of R (wherein R stands for at least one element selected from rare earth elements including yttrium), 2-28 atomic % of B, and 65-82 atomic % of Fe in which up to 50 atomic % of Fe may be replaced by Co, at least one boric acid ester compound such as tributyl borate is added as a lubricant in a proportion of 0.01%-2% by weight and mixed uniformly before, during, or after fine grinding of the alloy powder. The resulting powder mixture is compacted by compression molding in a magnetic field and the green compacts are sintered and aged. Compression molding can be performed continuously without need of mold lubrication, and the resulting magnets have improved magnet properties with respect to residual flux density, maximum energy product, and intrinsic coercive force.

    摘要翻译： 对于主要由10-30原子％的R（其中R表示选自包括钇的稀土元素中的至少一种元素），B-28的2-28原子％和65-82的细R-Fe-B合金粉末 其中至多50原子％的Fe可被Co替代的Fe的原子％，至少一种硼酸酯化合物如硼酸三丁酯作为润滑剂以0.01重量％-2重量％的比例加入并在 ，在合金粉末的精细研磨期间或之后。 所得粉末混合物通过在磁场中的压缩成型而压实，并将生坯压坯烧结和老化。 压缩成型可以连续进行而不需要模具润滑，并且所得到的磁体相对于剩余磁通密度，最大能量积和固有矫顽力具有改进的磁体性质。

    Process for preparing 3-substituted methyl-3-cephem-4-carboxylic acid
    55.
    发明授权
    Process for preparing 3-substituted methyl-3-cephem-4-carboxylic acid 失效
    3-取代甲基-3-头孢烯-4-羧酸的制备方法

    公开(公告)号：US5034521A

    公开(公告)日：1991-07-23

    申请号：US356034

    申请日：1989-05-22

    申请人： Kentaro Fukuzaki ,  Wataru Takahashi

    发明人： Kentaro Fukuzaki ,  Wataru Takahashi

    IPC分类号： C07D501/04 ,  C07D501/18

    CPC分类号： C07D501/04 ,  C07D501/18

    摘要： A novel process is disclosed for preparing a 3-substituted methyl-3-cephem-4-carboxylic acid or pharmaceutically acceptable salt thereof. The process comprises reacting a 3-acetoxymethyl-3-cephem-4-carboxylic acid or pharmaceutically acceptable salt thereof with a specific compound, such as a boric acid ester, an orthoester or an acetal, in the presence of at least one specific catalyst selected from the group consisting of Lewis acids or complexes thereof, proton acids and mixtures thereof. In the process, formation of impurities, such as a lactone, is sufficiently suppressed without protection of the carboxylic acid, so that the high purity desired product, i.e., a 3-substituted-methyl-3-cephem-4-carboxylic acid or pharmaceutically acceptable salt thereof, which is useful as an intermediate for various cephalosporin antibiotics having excellent antimicrobial activity, can be prepared in one step in high yield.

    Solenoid for electromagnetic valve
    57.
    发明授权
    Solenoid for electromagnetic valve 失效
    电磁阀电磁阀

    公开(公告)号：US4746888A

    公开(公告)日：1988-05-24

    申请号：US71259

    申请日：1987-07-08

    申请人： Koji Ichihashi ,  Kyoji Tanaka ,  Wataru Takahashi

    发明人： Koji Ichihashi ,  Kyoji Tanaka ,  Wataru Takahashi

    IPC分类号： F16K31/11 ,  H01F7/16 ,  H01F7/08

    CPC分类号： H01F7/1607 ,  H01F2007/085 ,  Y10T137/86622

    摘要： A solenoid for an electromagnetic valve which has an exciting coil, a tubular hollow inner housing with a shaft sleeve portion thereof disposed within the coil, a tubular slide guide having a bottom made of a non-magnetic material which is contained within the housing, a stopper with a stationary shaft portion fitted in an opening end of the slide guide, and a plunger slidably contained within the slide guide which is defined by the end face of the shaft portion and the bottom marginal portion of the slide guide.

    摘要翻译： 一种用于具有励磁线圈的电磁阀的螺线管，具有设置在线圈内的轴套部分的管状中空内壳体，具有容纳在壳体内的由非磁性材料制成的底部的管状滑动引导件， 止动器，固定轴部分装配在滑动引导件的开口端，以及可滑动地容纳在滑动引导件内的柱塞，其由轴部分的端面和滑动引导件的底部边缘部分限定。

    High withstand voltage Darlington transistor circuit
    58.
    发明授权
    High withstand voltage Darlington transistor circuit 失效
    高耐压达林顿晶体管电路

    公开(公告)号：US4616144A

    公开(公告)日：1986-10-07

    申请号：US680659

    申请日：1984-12-12

    申请人： Makoto Hideshima ,  Wataru Takahashi ,  Kenichi Muramoto

    发明人： Makoto Hideshima ,  Wataru Takahashi ,  Kenichi Muramoto

    IPC分类号： H03K17/082 ,  H03K17/615 ,  H03K19/08

    CPC分类号： H03K17/615 ,  H03K17/0826

    摘要： A high withstand voltage Darlington transistor circuit is comprised of a Darlington transistor and a bypass circuit. This bypass circuit is comprised of a bypass transistor whose collector is connected to the base of an earlier stage transistor of the transistors which make up the Darlington transistor and whose emitter is connected to the base of a later stage transistor. The base of the bypass transistor is connected to the collector of the Darlington transistor via a diode and the resistor. When the collector-emitter voltage of the Darlington transistor crosses a specified value, the bypass transistor operates and a base current of the Darlington transistor is supplied to the base of the later stage transistor without being supplied to the earlier stage transistor. The result is that the current amplification ratio of the Darlington transistor is substantially decreased, and the withstand voltage is substantially increased.

    摘要翻译： 高耐压达林顿晶体管电路由达林顿晶体管和旁路电路组成。 该旁路电路由旁路晶体管组成，其旁路晶体管的集电极连接到构成达林顿晶体管的晶体管的前级晶体管的基极，其发射极连接到后级晶体管的基极。 旁路晶体管的基极通过二极管和电阻连接到达林顿晶体管的集电极。 当达林顿晶体管的集电极 - 发射极电压超过规定值时，旁路晶体管工作，并且将达林顿晶体管的基极电流提供给后级晶体管的基极，而不会提供给前级晶体管。 结果是达林顿晶体管的电流放大率显着降低，并且耐电压显着增加。

    Immersion cooling apparatus for hot metal pipes
    59.
    发明授权
    Immersion cooling apparatus for hot metal pipes 失效
    用于热金属管的浸入式冷却装置

    公开(公告)号：US4116716A

    公开(公告)日：1978-09-26

    申请号：US777547

    申请日：1977-03-14

    申请人： Kametaro Itoh ,  Wataru Takahashi ,  Yoshun Yamamoto ,  Hachiro Harajiri

    发明人： Kametaro Itoh ,  Wataru Takahashi ,  Yoshun Yamamoto ,  Hachiro Harajiri

    IPC分类号： B21B45/02 ,  C21D1/18 ,  C21D9/08 ,  B08B9/02

    CPC分类号： C21D9/085 ,  B21B45/023

    摘要： An immersion cooling apparatus includes a mechanism for immersing a hot metal pipe with the axis thereof directed horizontally in a cooling tank containing cooling liquid, and a mechanism for locking the immersed pipe in position in the cooling tank. While the locking mechanism is preventing the pipe from moving, a nozzle extending toward the interior of the pipe in the direction of the pipe axis injects cooling liquid into the pipe. The cooling liquid thus injected flows completely through the pipe so that the pipe being cooled is not injured or bent.

    摘要翻译： 浸入式冷却装置包括将热水金属管的轴线水平地浸入包含冷却液的冷却槽中的机构，以及用于将浸入管锁定在冷却槽内的适当位置的机构。 当锁定机构阻止管子移动时，沿着管轴方向向管内延伸的喷嘴将冷却液注入管中。 如此注入的冷却液完全流过管道，使被冷却的管道不受伤或弯曲。