Process for producing polyhydric alcohol
    71.
    发明授权
    Process for producing polyhydric alcohol 失效
    多元醇的制造方法

    公开(公告)号:US6077980A

    公开(公告)日:2000-06-20

    申请号:US118419

    申请日:1998-07-17

    CPC分类号: C07C29/38 C07C45/75

    摘要: A process for producing a polyhydric alcohol which comprises subjecting formaldehyde and a specific aliphatic aldehyde to an aldol condensation reaction in the presence of a base catalyst, and then subjecting the resultant reaction product to a crossed Cannizzaro reaction, while separating 2-alkenal formed as a byproduct during the aldol condensation reaction, prior to the completion of the crossed Cannizzaro reaction. Also a process for producing a polyhydric alcohol which comprises reacting formaldehyde with a 2-alkenal, such as that obtained in the aldol condensation reaction, in the presence of a base catalyst, then subjecting the resultant reaction product and a specific aliphatic aldehyde to an aldol condensation reaction, and subsequently subjecting the resultant reaction product to a crossed Cannizzaro reaction. The processes provide a polyhydric alcohol in high selectivity with a minimum excess of formaldehyde, without substantially by-producing a 2-alkenal.

    摘要翻译: 一种制备多元醇的方法,其包括在碱催化剂存在下使甲醛和特定的脂族醛进行醛醇缩合反应,然后将所得反应产物进行交叉的坎尼扎罗反应,同时分离形成的二烯烃 在醛醇缩合反应期间,在交叉的Cannizzaro反应完成之前副产物。 还有一种生产多元醇的方法,它包括在碱催化剂的存在下使甲醛与醛缩醇反应得到的2-烯醛反应,然后将得到的反应产物和特定的脂族醛进行醛醇 缩合反应,随后使得到的反应产物进行交叉的坎尼扎罗反应。 该方法以高选择性提供最少过量的甲醛的多元醇,而基本上不产生2-烯醛。

    Cooling water passage structure of outboard motor
    72.
    发明授权
    Cooling water passage structure of outboard motor 失效
    舷外马达冷却水通道结构

    公开(公告)号:US6012956A

    公开(公告)日:2000-01-11

    申请号:US94034

    申请日:1998-06-09

    摘要: An outboard motor is equipped with an engine, an engine holder, an oil pan disposed below the engine in a state of the outboard motor being mounted to a hull, a water pump disposed below the oil pan, and a cooling water passage structure. The cooling water passage structure includes a vertical cooling water passage vertically passing through inside the oil pan and communicated with the side of the engine, a lateral cooling water passage extending in a lateral direction along a bottom surface of the oil pan, a cooling water supply pipe extending upward from the water pump and connected to a side of the engine, and a water pressure relief valve provided for the lateral cooling water passage for controlling a pressure increasing of the cooling water. The lateral cooling water passage has one end communicated with a lower end of the vertical cooling water passage and has another one end to which an upper end of the cooling water supply pipe is connected.

    摘要翻译: 舷外马达配备有发动机,发动机支架,设置在发动机下方的油底壳,舷外马达安装在船体上的状态,设置在油盘下方的水泵和冷却水通道结构。 冷却水通道结构包括垂直通过油盘内部并与发动机侧连通的垂直冷却水通道,沿着油底壳的底面沿横向延伸的横向冷却水通道,冷却水供应 从水泵向上延伸并连接到发动机侧的管,以及设置在横向冷却水通道上用于控制冷却水的压力增加的水压溢流阀。 横向冷却水通道的一端与垂直冷却水通道的下端连通,另一端与冷却水供给管的上端连接。

    Simple charge-pump circuit with variable conduction path for changing
boosting ratio and step-up circuit using the same
    74.
    发明授权
    Simple charge-pump circuit with variable conduction path for changing boosting ratio and step-up circuit using the same 失效
    具有可变传导路径的简单的电荷泵电路,用于改变升压比和使用其的升压电路

    公开(公告)号:US5870295A

    公开(公告)日:1999-02-09

    申请号:US861610

    申请日:1997-05-22

    申请人: Toshio Watanabe

    发明人: Toshio Watanabe

    CPC分类号: G11C5/145 H02M3/07

    摘要: A pattern generator is responsive to a control signal so as to change a pulse signal pattern selectively supplied through a level-shift circuit to switching elements of a charge-pump circuit, and the switching elements cause boosting capacitors to be differently charged depending upon the pulse signal pattern so that all the boosting capacitors participate in the boosting operation regardless of the target ratio between the input potential and the output potential.

    摘要翻译: 模式发生器响应于控制信号,以将通过电平移位电路有选择地提供的脉冲信号模式改变为电荷泵电路的开关元件,并且开关元件使得升压电容器根据脉冲而被不同地充电 信号图案,使得所有升压电容器参与升压操作,而与输入电位和输出电位之间的目标比率无关。

    Optical pickup device with a floating element
    77.
    发明授权
    Optical pickup device with a floating element 失效
    具有浮动元件的光学拾取装置

    公开(公告)号:US5786947A

    公开(公告)日:1998-07-28

    申请号:US834147

    申请日:1997-04-14

    IPC分类号: G11B7/12 G11B7/135 G02B7/02

    摘要: An optical pickup device for condensing the light from a light source on a signal recording surface of an optical recording medium, such as an optical disc. A semi-spherical lens of the optical pickup device has a surface 9b facing an optical disc 20 and has a pre-set refractive index. The optical pickup device also has a slider 12 adapted for securing the lens 9 and for being in sliding contact with an optical disc 20, and a spring plate 13 adapted for thrusting and supporting the slider in sliding contact with the optical disc 20. With the optical pickup device, high density reproduction may be realized, while the tolerance value for warping during disc molding or the tolerance value for warping due to moisture absorption may be increased. In addition, the production yield and the degree of freedom in selecting the disc materials may be improved.

    摘要翻译: 一种光拾取装置,用于将来自光源的光聚焦在诸如光盘的光记录介质的信号记录表面上。 光学拾取装置的半球形透镜具有面向光盘20的表面9b并且具有预设折射率。 光学拾取装置还具有适于固定透镜9并与光盘20滑动接触的滑动件12,以及用于推压和支撑滑动件以与光盘20滑动接触的弹簧板13。 可以实现光拾取装置的高密度再现,而盘成型时的翘曲的公差值或由于吸湿引起的翘曲的公差值可能增加。 此外,可以提高选择盘材料的生产率和自由度。

    Television conversation/monitoring system changing transmission capacity
responsive to state change in remote location
    78.
    发明授权
    Television conversation/monitoring system changing transmission capacity responsive to state change in remote location 失效
    电视对话/监控系统根据偏远地区的状态变化改变传输容量

    公开(公告)号:US5751339A

    公开(公告)日:1998-05-12

    申请号:US542031

    申请日:1995-10-12

    摘要: A television conversation/monitoring system connecting a central station and a plurality of terminal stations through an ISDN line. The central station has a picture/sound conversation/monitoring device, a picture input/output device, a sound input/output device, a system control portion and an ISDN line terminal device, and each of the terminal stations has a picture/sound conversation/monitoring device, a system control portion, a picture input/output device, a sound input/output device, a terminal station state change detecting device and an ISDN line terminal device. The central-station-side system control device has a function to control the line capacity, so that conversation and monitoring can be performed with a plurality of terminal stations simultaneously while the line capacity is changed in accordance with the state of terminals.

    摘要翻译: 通过ISDN线连接中心站和多个终端站的电视对话/监视系统。 中央电台具有图像/声音通话/监视装置,图像输入/输出装置,声音输入/输出装置,系统控制部分和ISDN线路终端装置,并且每个终端具有图像/声音对话 /监视装置,系统控制部分,图像输入/输出装置,声音输入/输出装置,终端状态改变检测装置和ISDN线路终端装置。 中央站侧系统控制装置具有控制线路容量的功能,能够根据终端的状态改变线路容量,同时在多个终端站进行通话和监视。

    Image forming apparatus for preventing discharge products from
contacting a photosensitive body
    80.
    发明授权
    Image forming apparatus for preventing discharge products from contacting a photosensitive body 失效
    用于防止放电产物接触感光体的图像形成装置

    公开(公告)号:US5655187A

    公开(公告)日:1997-08-05

    申请号:US569904

    申请日:1995-12-08

    CPC分类号: G03G21/06 G03G15/0258

    摘要: An image forming apparatus includes an opening portion that opens toward a photosensitive body and has a stagnant portion in which discharge products produced by a discharging means stagnate. A partition member is disposed in the vicinity of an opening of the opening portion, the opening opposing a photosensitive body, the partition member preventing discharge products that fall from the stagnant portion from falling directly into contact with the photosensitive body.

    摘要翻译: 图像形成装置包括朝向感光体开口的开口部分,并且具有停滞部分,其中由排出装置产生的排出物停滞。 分隔构件设置在开口部分的开口附近,与感光体相对的开口处,防止从停滞部分落下的排出物直接与感光体接触的分隔构件。