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    Latch for use in window constructions
    24.
    发明授权
    Latch for use in window constructions 失效
    锁定用于窗口结构

    公开(公告)号：US5127685A

    公开(公告)日：1992-07-07

    申请号：US663147

    申请日：1991-03-01

    Applicant: Raymond Dallaire ,  Dominique Dallaire

    Inventor： Raymond Dallaire ,  Dominique Dallaire

    IPC: E05B15/16 ,  E05B65/08 ,  E05C1/10

    CPC classification number: E05B65/0876 ,  E05C1/10 ,  E05B15/1635 ,  Y10T292/0846 ,  Y10T292/0997

    Abstract: A latch for use in window constructions, particularly vertically and horizontally sliding window constructions. The latch is generally mounted internally in a window sash frame so that its latch bolt protrudes from the sash to engage a guide slot in the main frame jamb or header of a window frame. The latch includes a thin rectangular base plate having upstanding bosses on its opposing ends which are pierced by vertical bores that pass through the base plate. The latch bolt is of substantially the same width as the base plate and slides over it. The bolt includes two openings spaced to receive the upstanding bosses on the base plate, each opening having a first lower region sized to slidably accommodate a boss and a second wider ovate upper region sized to slidably accommodate the head of a screw fastener. Two screw fasteners driven respectively through the vertical bores in the bosses on the ends of the base plate affix the latch to a window sash and secure the bolt to the base plate. A coil spring biases the bolt to its extended position. The base plate further includes two opposing short vertical walls with inturned wedge-shaped protrusions along their top edges which slidably grip longitudinal rail regions on opposite side of the middle of the latch bolt to maintain the latch in an assembled condition before it is attached to the sash of a window. A finger pull is also provided to facilitate manipulation of the latch.

    Abstract translation: 用于窗构造的闩锁，特别是垂直和水平滑动窗构造。 闩锁通常安装在窗框框架内部，使得其闩锁从窗框突出以接合窗框的主框架边框或头部中的引导槽。 闩锁包括薄的矩形基板，其具有在其相对端部上的直立凸起，其被穿过基板的垂直孔刺穿。 闩锁螺栓的宽度基本与基板相同，并在其上滑动。 螺栓包括间隔开的两个开口，用于容纳底板上的直立凸起部，每个开口具有第一下部区域，第一下部区域的尺寸设计成可滑动地容纳凸起部分和第二较宽的卵形上部区域，其尺寸可滑动地容纳螺钉紧固件的头部。 分别通过基板端部的凸台中的垂直孔驱动的两个螺钉紧固件将闩锁固定到窗框并将螺栓固定到基板。 螺旋弹簧将螺栓偏压到其伸出位置。 基板还包括两个相对的短垂直壁，其沿其顶部边缘具有带楔形的楔形突起，其可滑动地夹持在闩锁螺栓的中间的相对侧上的纵向轨道区域，以将闩锁保持在组装状态，然后将其连接到 一扇窗户的窗扇 还提供手指拉动以便于闩锁的操纵。

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