Patent ID: 6132152
Filing Date: 2000-10-17
Classification: F16B

Abstract:
An undercut-engaging dowel, comprising an anchor rod (2; 22) having load application means at one of longitudinal ends thereof and a head (3; 23), the diameter of which increases to a free end of the anchor rod, at another of the longitudinal ends thereof, an expansion sleeve (4; 24) having a central bore through which the anchor rod (2; 22) extends, a circumferential groove (7; 27), and a plurality of expansion tabs (5; 25) separated from each other by longitudinal slots (6; 26) and extending from the circumferential groove (7) toward the head (3; 23), the expansion tabs (5; 25) expanding radially, upon the expansion sleeve (4; 24) being displaced over the head (3; 23); and a substantially ring-shaped member (8; 28) arranged in the circumferential groove (7) and substantially filling out the circumferential groove (7; 27) in an expanded condition of the expanded condition of the expansion tabs (5; 25) for increasing resistance of the dowel in an anchoring condition thereof, to displacement under a load.