Undercut-engaging dowel
First Claim
1. 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.
1 Assignment
0 Petitions
Accused Products
Abstract
A dowel including an anchor rod (2; 22) having a load application element at one of its longitudinal ends and a head (3; 23), a diameter of which increases toward the free end of the anchor rod, at its opposite end, an expansion sleeve (4; 24) having a bore through which the anchor rod (2; 22) extends and a plurality of expansion tabs (5; 25) separated from each other by longitudinal slots (6; 26) and extending from a 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 expansion tabs (5; 25).
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Citations
13 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- 22) having load application means at one of longitudinal ends thereof and a head (3;
Specification