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    Music stand
    13.
    发明授权
    Music stand 失效
    音乐台

    公开(公告)号：US3637172A

    公开(公告)日：1972-01-25

    申请号：US3637172D

    申请日：1970-01-29

    申请人： KRAUTH & BENNINGHOFEN INC

    发明人： DIESBACH FREDERICK B

    IPC分类号： A47B19/00 ,  A47B97/04

    CPC分类号： A47B19/002 ,  Y10T403/32426 ,  Y10T403/7009

    摘要： A music stand having quick release lock for engaging a tubular support member to a plate base member where the plate base member is disposed substantially perpendicular to the tubular support member comprising, in preferred form, (a) a circular hole in the plate member in which the tubular member is received, the hole being sized to provide slip fit when the plate member and tubular member are assembled and the hole having a first center that establishes a center axis perpendicular to the plate member, (b) at least two pins mounted to the plate on opposite sides of the hole, the pins being disposed on a circle having a second center with that second center being offset a small distance relative to the first center, (c) a lock ring rotatable relative to the plate member having a pair of opposed arcuate slots engaged with the pins, the arcuate slots having a common third center which lies on the same center axis as the second center, and (d) a hole in the lock ring that establishes a fourth center, the fourth center being offset the same small distance relative to the third center as the second center is offset from the first center so that as the lock ring is rotated relative to the plate member the fourth center can move from a release position where the fourth center also lies on the same center axis as the first center to a lock position where the fourth center is offset relative to the center axis of the first center.

    摘要翻译： 一种具有快速释放锁定的音乐架，用于将管状支撑构件接合到板基构件，其中板基构件基本上垂直于管状支撑构件设置，其优选形式包括（a）板构件中的圆形孔，其中 管状构件被接收，孔被设计成当板构件和管状构件组装时提供滑动配合，并且孔具有建立与板构件垂直的中心轴的第一中心，（b）至少两个安装到 所述板在所述孔的相对侧上，所述销布置在具有第二中心的圆上，所述第二中心相对于所述第一中心偏移小的距离，（c）可相对于所述板构件旋转的锁定环， 与销钉接合的相对的弓形槽，弓形槽具有与第二中心位于同一中心轴上的公共第三中心，以及（d）锁定环中的孔，其建立一个 第四中心相对于第三中心偏移相同的小距离，因为第二中心偏离第一中心，使得当锁环相对于板构件旋转时，第四中心可以从释放位置移动， 第四中心也位于与第一中心相同的中心轴线处于锁定位置，其中第四中心相对于第一中心的中心轴线偏移。