| 摘要 |
<p>The present invention provides a cost effective security locking mechanism f or improving the security between a frame member (6) and the masonry (4) surrounding the frame member (6) and additionally for enhancing the strength of engagement between the frame (6) and a door associated with the frame (6) . A substantial proportion of any force exerted on the door, when in the locke d condition, is transmitted directly to the masonry (4) surrounding the frame (6) by means of auxiliary bolts (50) and tubular metal anchorages (12).</SDO AB></p> |
