| 摘要 |
<p>The guard for cylindrical locks comprises a plurality of guard plates (18, 30, 31), on at least one of which is formed a plurality of seats (20) for heads (22) of non-rotating bolts (24); and a plurality of bolts (24) having heads (22) seated non-rotatably in the seats (20) for heads of non-rotating bolts and arranged for mounting the guard plates on a door. <IMAGE></p> |
