Method for producing an aldehyde
    4.
    发明授权
    Method for producing an aldehyde 失效
    醛的制备方法

    公开(公告)号:US5306845A

    公开(公告)日:1994-04-26

    申请号:US082366

    申请日:1993-06-28

    CPC分类号: C07C45/41 B01J23/26

    摘要: A method for producing an aldehyde, which comprises hydrogenating a carboxylic acid or its alkyl ester with molecular hydrogen in the presence of a catalyst, wherein (1) chromium oxide of high purity having a specific surface area of at least 10 m.sup.2 /g and a total content of sodium, potassium, magnesium and calcium of not more than 0.4 wt %, is used as the catalyst, and (2) the hydrogenation reaction is conducted while maintaining the carboxylic acid or its alkyl ester at a concentration of not more than 10 vol %.

    摘要翻译: 一种生产醛的方法,其包括在催化剂存在下用分子氢氢化羧酸或其烷基酯,其中(1)具有至少10m 2 / g的比表面积的高纯度氧化铬和 使用不超过0.4重量%的钠,钾,镁和钙的总含量作为催化剂,和(2)在保持羧酸或其烷基酯浓度不超过10℃的同时进行氢化反应 vol%。

    Anti-lock control device for air-over hydraulic brake system
    6.
    发明授权
    Anti-lock control device for air-over hydraulic brake system 失效
    用于空气液压制动系统的防抱死控制装置

    公开(公告)号:US4973108A

    公开(公告)日:1990-11-27

    申请号:US375942

    申请日:1989-07-06

    摘要: An anti-lock control device of a hydraulic brake system which enables a rapid building up of braking hydraulic pressure during normal braking but, once an anti-lock control is commenced, reduces the rise of the recovery of the braking hydraulic pressure so as to optimize the same for anti-lock control. The hydraulic braking system having a pneumatic pressure source, a brake valve, converting device for receiving the pneumatic pressure supplied from the pneumatic pressure source through the brake valve and converting the received pneumatic pressure into braking hydraulic pressure, wheel cylinders for receiving the braking hydraulic pressure, and pneumatic pressure control valves for controlling the pneumatic pressure in a pneumatic pressure chamber of the converting means so as to control the braking hydraulic pressure. The anti-lock control device has a comparator for comparing the pneumatic pressure in the pneumatic pressure chamber with the output pneumatic pressure of the brake valve, and an orifice valve which is put into a passage of pressurized air between the brake valve and the pneumatic pressure control valves when the comparator has judged that the pneumatic pressure in the pneumatic pressure chamber has come down below the output pneumatic pressure of the brake valve by a predetermined value. The orifice valve reduces the rate of rise of the pneumatic pressure in the pneumatic chamber so as to correspondingly reduce the rate of increase of the braking hydraulic pressure.

    摘要翻译: 一种液压制动系统的防抱死控制装置,其能够在正常制动期间快速建立制动液压,但一旦开启防抱死控制,就可以减少制动液压恢复的上升,从而优化 同样的防锁控制。 液压制动系统具有气动压力源,制动阀,转换装置,用于接收从气动压力源通过制动阀提供的气压并将接收到的气压转换成制动液压,用于接收制动液压的轮缸 以及用于控制转换装置的气动压力室中的气压的气动压力控制阀,以便控制制动液压。 防抱死控制装置具有用于将气动压力室中的气压与制动阀的输出气压进行比较的比较器,以及在制动阀和气动压力之间放入加压空气通道的孔口阀 当比较器判断气动压力室中的气压已经低于制动阀的输出气动压力达预定值时,控制阀。 节流阀减小了气动室中气动压力的上升率,从而相应地降低了制动液压的增加速度。

    Straight guide driving device
    7.
    发明授权
    Straight guide driving device 失效
    直导驱动装置

    公开(公告)号:US4968118A

    公开(公告)日:1990-11-06

    申请号:US254606

    申请日:1988-10-07

    IPC分类号: F16H19/04 G01B9/04 G02B21/24

    CPC分类号: G02B21/24 Y10T74/1967

    摘要: The straight guide driving device comprises a guide rail fixedly attached to an immovable block such as the microscope body, a movable block such as a microscope tube block mounted so as to be displaced along the guide rail and a rack-pinion connection interposed between the immovable block and the movable block for driving the movable block. The rack-pinion connection has a pair of rack members which are fixedly attached to the movable block and arranged respectively in the vicinity of both the opposite sides of the guide rail. Accordingly, the movable block can perform straight movement with very high accuracy along the guide rail.

    Process for preparing bisphenols
    9.
    发明授权
    Process for preparing bisphenols 失效
    制备双酚的方法

    公开(公告)号:US4423252A

    公开(公告)日:1983-12-27

    申请号:US279692

    申请日:1981-07-02

    IPC分类号: C07C37/20 C07C39/16

    CPC分类号: C07C37/20

    摘要: Bisphenols are prepared by condensation of a phenol with a ketone in the presence of a sulfonic acid type cation exchange resin partially modified with a pyridinealkanethiol of the formula:Py--(CH.sub.2).sub.n SHwherein n is a positive integer and Py is 3-pyridyl when n is 1, or 2-, 3- or 4-pyridyl when n is more than 1.

    摘要翻译: 双酚通过苯酚与酮缩合反应来制备,该磺酸型阳离子交换树脂部分地用下式的吡啶烷硫醇部分改性:Py-(CH2)nSH,其中n是正整数,Py是3-吡啶基, 当n大于1时,n为1或2-,3-或4-吡啶基。

    Sealed type battery
    10.
    发明授权
    Sealed type battery 失效
    密封型电池

    公开(公告)号:US5595835A

    公开(公告)日:1997-01-21

    申请号:US406847

    申请日:1995-05-22

    IPC分类号: H01M2/12 H01M6/10 H01M2/00

    CPC分类号: H01M6/10 H01M2/1241

    摘要: A sealed type battery is disclosed which can reduce variations in the operating pressure of a safety valve, improve the reliability for the airtightness of a battery vessel, remove the contact of electrode plates and the case due to the rightward or leftward deviation of a group of electrode plates in the direction of the winding shaft, remarkably reduce the internal short-circuiting production rate, and realize cost lowering or reduction in the number of working steps. The battery is equipped with a safety valve in which a cover plate having a hole, a metal thin plate and a holding plate of metal having a hole are stacked with the metal thin plate sandwiched and integrally fixed by laser welding. Further, the center line of the winding axis of a group of spiral electrodes is in parallel to the opening face of a battery case and the width of a separator in the direction of the winding axis is larger than the side of the opening portion of a angular tubular case in parallel to the direction of the winding axis.

    摘要翻译: PCT No.PCT / JP94 / 01210 Sec。 371日期:1995年5月22日 102(e)日期1995年5月22日PCT 1994年7月22日PCT公开了一种密封型电池,其可以减少安全阀的工作压力的变化,提高电池容器的气密性的可靠性,去除电极的接触 由于一组电极板沿着卷绕轴的方向的向右或向左偏移,因此显着降低了内部短路生产率,并且实现了成本降低或减少了加工步骤的数量。 电池配备有安全阀,其中具有孔的盖板,金属薄板和具有孔的金属的保持板被堆叠,金属薄板被夹在一起并通过激光焊接整体固定。 此外,一组螺旋电极的卷绕轴线的中心线与电池壳体的开口面平行,并且分离器在卷绕轴线方向上的宽度大于a的开口部分的宽度 角管状平行于卷绕轴的方向。