| 摘要 |
<p>An anchor device (1) comprising an expansion bolt (2) and a fastening screw (3) of the bolt (2) to a wall; the bolt (2) comprises a tubular body provided with a hole (27) which extends along the longitudinal axis (A) of the tubular body itself so as to accommodate the fastening screw (3); the tubular body further comprises a central shank (4) and a head (5), which is integrally made with the central shank (4) and comprises a full solid body on which a pair of longitudinal reciprocally perpendicular through slots (7) are made which delimit four anchor segments (8) adapted to spread outwards under the bias of the fastening screw (3).</p> |
