公开(公告)号：US3751085A

公开(公告)日：1973-08-07

申请号：US3751085D

申请日：1972-02-07

Applicant: NORRIS INDUSTRIES

Inventor： SANDERS V ,  POTTER D

IPC: E05B15/16 ,  E05B63/00 ,  E05C1/06

CPC classification number: E05B63/0017 ,  E05B15/1621 ,  Y10S292/52 ,  Y10T292/0983 ,  Y10T292/1016

Abstract: A dead bolt latch for a door has a rotating cam lever action for extending the bolt into a strike plate recess in the door frame. The cam has the form of a pivoted arm and is rotated by the tail piece of a lock device. The pivot axis is near one edge of a lock case and engages a cam opening in an actuator slide at the opposite side of the latch case, the actuator slide being attached to the latch bolt. A series of stepped shoulders on the cam lever serve as blockers to prevent retraction of the actuator slide by pressure against the latch bolt so that the latch bolt can be locked in any one of several extended positions and need not occupy a fully extended position to be assured of there being no unauthorized retraction which might otherwise be possible with a partially extended latch bolt.

Abstract translation: 用于门的死螺栓闩锁具有用于将螺栓延伸到门框架中的冲击板凹槽中的旋转凸轮杆动作。 凸轮具有枢转臂的形式并且被锁定装置的尾部件旋转。 枢转轴线靠近锁定壳体的一个边缘，并且与闩锁壳体的相对侧处的致动器滑块中的凸轮开口接合，致动器滑块附接到闩锁螺栓。 凸轮杆上的一系列阶梯肩部用作阻挡件，以防止致动器滑块通过压靠在闩锁螺栓上的方式退回，使得闩锁螺栓可以锁定在几个延伸位置中的任何一个中，并且不需要占据完全伸出位置 确保没有未经授权的撤回，否则可能会使用部分延长的闩锁螺栓。