| 摘要 |
locking devices. SUBSTANCE: the lock has a body with a cross-bar installed in it, linked with the lock security mechanism, and a means for protection of the security mechanism against drilling-out, having a washer installed for free rotation. The washer is positioned for free rotation on a hardened rivet located on the lock body on the door outside, the rivet head is cone-shaped, the cone faces the door outside, and the rivet proper is positioned on the body opposite the location of the security mechanism striker. EFFECT: enhanced resistance to burglary. 4 cl, 2 dwg
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