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163 条记录 (耗时 0.028 秒)

    Apparatus for pressing a circulating grinding belt
    12.
    发明授权
    Apparatus for pressing a circulating grinding belt 失效
    用于压制循环研磨带的装置

    公开(公告)号：US5613901A

    公开(公告)日：1997-03-25

    申请号：US552267

    申请日：1995-11-02

    申请人： Georg Weber ,  Martin Ellmer

    发明人： Georg Weber ,  Martin Ellmer

    IPC分类号： B24B21/06 ,  B24B21/10 ,  B24B21/08

    CPC分类号： B24B21/10 ,  B24B21/06

    摘要： In an apparatus for pressing the grinding belt of a belt grinding machine to the upper surface of a workpiece, a pressing beam located above and extending transversely to the feed direction of the workpiece carries a row of positioning units having downwardly extending positioning rods for applying forces to an equalizing mat positioned between the lower ends of the rods and the inner side of the grinding belt to push the belt downwardly onto the top surface of the workpiece. The forces are transferred from the positioning rods to the equalizing mat by a row of pressure plates respectively associated with the positioning rods with the lower ends of the positioning rods lying loosely against the pressure plates. This achieves a simplified construction easing maintenance and repair and allows the equalizing pad to have the ability to uniformly distribute the forces onto the grinding belt and to have the flexibility needed to accommodate workpiece top surfaces of different shapes.

    摘要翻译： 在用于将带式磨碎机的研磨带压到工件的上表面的装置中，位于工件的进给方向上方并横向延伸的加压梁承载一排具有向下延伸的定位杆的定位单元，用于施加力 到位于杆的下端和研磨带的内侧之间的均衡垫，以将带向下推到工件的顶表面上。 这些力通过分别与定位杆相关联的一排压板从定位杆传递到均衡垫，定位杆的下端松散地抵靠压板。 这实现了简化的结构简化维护和修理，并且允许均衡垫具有将力均匀地分布到研磨带上并且具有容纳不同形状的工件顶表面所需的柔性的能力。

    Magnetic tape cassette apparatus having a tiltable transport member for switching tape transport direction
    17.
    发明授权
    Magnetic tape cassette apparatus having a tiltable transport member for switching tape transport direction 失效
    具有用于切换带输送方向的可倾斜传送构件的磁带盒装置

    公开(公告)号：US5257150A

    公开(公告)日：1993-10-26

    申请号：US945423

    申请日：1992-09-14

    申请人： Norbert Kunze ,  Georg Weber

    发明人： Norbert Kunze ,  Georg Weber

    IPC分类号： G11B15/093 ,  G11B15/18 ,  G11B15/44 ,  G11B5/008

    CPC分类号： G11B15/442 ,  G11B15/093 ,  G11B15/1883

    摘要： A magnetic-tape-cassette apparatus having a deck for magnetic-tape cassettes, which deck is constructed for playing and fast-winding operation with a first and an opposite second tape-transport direction. The deck has a first and a second selectively drivable reel disc for the magnetic tape, and a first and a second capstan adapted to be driven in different directions of rotation by a motor. A switching mechanism having a movable transport member switches the reel-disc drive from one reel disc to the other reel disc in order to change the tape-transport direction. The transport member has axially spaced toothed-rack portions which selectively cooperate with oppositely rotating toothed drive wheels for moving the transport member. The transport member is arranged to be pivotable transversely of its direction of translation in such a way that the meshing between a toothed-rack portion and a drive wheel is cancelled in the final stage of the translation movement of a tilting movement of the transport member to disengage the teeth. The tilting movement and the return into a neutral center position are obtained by a return spring which is pretensioned during the transverse movement.

    摘要翻译： 一种具有用于磁带盒的卡座的磁带盒装置，该甲板被构造用于以第一和相对的第二传送方向进行播放和快速卷绕操作。 甲板具有用于磁带的第一和第二选择性驱动的卷轴盘，以及适于通过马达在不同旋转方向上驱动的第一和第二主导轴。 具有可移动传送构件的切换机构将卷盘驱动器从一个卷盘盘切换到另一个卷盘盘，以便改变带传送方向。 运输构件具有轴向间隔的齿条部分，其选择性地与相对旋转的齿形驱动轮协作以移动运输构件。 运输构件被布置成可以横向于其平移方向枢转，使得齿形部分和驱动轮之间的啮合在运输构件的倾斜运动的平移运动的最后阶段被抵消 脱牙 通过在横向移动期间预张紧的复位弹簧获得倾斜运动和返回中立中心位置。

    2,3-difluorohydroquinone derivatives
    18.
    发明授权
    2,3-difluorohydroquinone derivatives 失效
    2,3-二氟氢醌衍生物

    公开(公告)号：US5248447A

    公开(公告)日：1993-09-28

    申请号：US871620

    申请日：1992-04-21

    申请人： Volker Reiffenrath ,  Joachim Krause ,  Andreas Wachtler ,  Georg Weber ,  Thomas Geelhaar ,  David Coates ,  Ian C. Sage ,  Simon Greenfield

    发明人： Volker Reiffenrath ,  Joachim Krause ,  Andreas Wachtler ,  Georg Weber ,  Thomas Geelhaar ,  David Coates ,  Ian C. Sage ,  Simon Greenfield

    IPC分类号： C07C43/225 ,  C07D239/26 ,  C09K19/20 ,  C09K19/30 ,  C09K19/34

    CPC分类号： C07D239/26 ,  C07C43/225 ,  C09K19/2007 ,  C09K19/2021 ,  C09K19/3066 ,  C09K19/3068 ,  C09K19/3441 ,  C09K19/3458 ,  C07C2101/14 ,  C09K2019/0407

    摘要： 2,3-difluorohydroquinone compounds of the formula I ##STR1## in which R.sup.1 and R.sup.2, in each case independently of one another, are alkyl having 1 to 15 C atoms or alkenyl having 3 to 15 C atoms which are unsubstituted, monosubstituted by cyano or at least monosubstituted by fluorine or chlorine, it also being possible for one CH.sub.2 group in these radicals to be replaced by --O--, --CO--, --CO--O--, --O--CO-- or --O--CO--O--,A.sup.1, A.sup.2 and A.sup.3, in each case independently of one another, are(a) trans-1,4-cyclohexylene, in which, in addition, one or two non-adjacent CH.sub.2 groups may be replaced by --O-- and/or --S--,(b) 1,4-phenylene, in which, in addition, one or two CH groups may be replaced by N, or(c) a radical from the group comprising piperidine-1,4-diyl, 1,4-bicylo (2,2,2)-octylene (sic), 1,3,4-thiadiazole-2,5-diyl, napththalene-2,6-diyl, decahydronaphthalene-2,6-diyl and 1,2,3,4-tetrahydronaphthalene-2,6-diyl, it being possible for the radicals (a) and (b) to be monosubstituted or polysubstituted by F, Cl, CH.sub.3 or CN,Z.sup.1 is --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O--, --C.tbd.C-- or a single bond,Q.sup.1 and Q.sup.2, in each case independently of one another, are --CO-- or --CH.sub.2 --,m and n are each 0, 1 or 2, and(m+n) is 0, 1 or 2,are suitable as components of liquid-crystalline phases.

    摘要翻译： PCT No.PCT / EP89 / 00179 371日期：1989年5月15日 102（e）日期1989年5月15日PCT提交1989年2月27日PCT公布。 出版物WO89 / 08637 日本1989年9月21日。式I的1,3-二氟氢醌化合物其中R 1和R 2各自独立地为具有1至15个碳原子的烷基或具有3至15个C原子的烯基， 是未取代的，被氰基单取代或至少被氟或氯单取代，这些基团中的一个CH 2基团也可被-O - ， - CO - ， - CO-O-，-O-CO-或 -O-CO-O-，A1，A2和A3各自独立地是（a）反式-1,4-亚环己基，此外，一个或两个不相邻的CH 2基可以是 被-O-和/或-S-取代，（b）1,4-亚苯基，其中另外一个或两个CH基团可被N取代，或（c）包含哌啶 - 1,4-二酰基，1,4-双酰（2,2,2） - 辛烯（sic），1,3,4-噻二唑-2,5-二基，萘-2,2二基，十氢萘-2， 6-二基和1,2,3,4-四氢化萘-2,6-二基，基团（a）和（b）可以是单取代的或聚合的 被F，Cl，CH 3或CN取代，Z 1是-CO-O - ， - O - CO - ， - CH 2 CH 2 - ， - OCH 2 - ， - CH 2 O-，-C 在每种情况下彼此独立地是-CO-或-CH2-，m和n各自为0,1或2，并且（m + n）为0,1或2，适合作为液晶相的组分 。