Undercut self-cutting anchor

Details Undercut self-cutting anchor Undercut self-cutting anchor

1998-12-15

2000-01-11

Wilson, Neill

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

With hole forming means

411 541, 411 603, F16B 1304, F16B 1306

Patent

active

060128879

ABSTRACT:
An undercut self-cutting anchor including an anchor rod (2) having a stem(3) provided with a load application element (4) at its rear end and with a head portion (5) at its opposite end, with the head portion (5) widening toward a front end (6) of the anchor rod (2), and an expansion sleeve (8) longitudinally displaceable over the head portion (5) and having, at its end adjacent to the head portion (5), a plurality of expansion tabs (11), which are separated from each other by longitudinal slots (10) and extending in a direction toward the head portion (5), and a plastic hinge-forming transition region (13) extending toward the expansion tabs (11), with a wall thickness (t) of the expansion sleeve (8) in the transition region (13) decreasing in a direction toward a front end (9) of the expansion sleeve.

REFERENCES:
patent: 4560311 (1985-12-01), Herb et al.
patent: 4818163 (1989-04-01), Bereiter et al.
patent: 4929134 (1990-05-01), Bergner
patent: 5205689 (1993-04-01), Fischer
patent: 5609453 (1997-03-01), Fischer
patent: 5816760 (1998-10-01), Mattner et al.

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