Self-cutting dowel

Details Self-cutting dowel Self-cutting dowel

1997-12-16

1999-06-15

Saether, Flemming

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

Having separate expander means

With hole forming means

411 55, F16B 1304

Patent

active

059115505

ABSTRACT:
A self-cutting dowel including a dowel rod (2) having a head portion (3) which widens in a setting direction (S), and a sleeve (5) displaceable along the dowel rod (2) and having, at its end adjacent to the head portion (3) a plurality of expansion tabs (7) separated by longitudinal slots (6), with the sleeve (5) being displaceable onto the head portion (3) upon radial expansion of the expansion tabs (7), and with the sleeve (5) being displaceable onto the head portion (3) upon radial expansion of the expansion tabs (7), and with the sleeve (5) being provided with at least one cutter (10) for forming an under cut in a ground during a dowel setting process upon rotation of the sleeve (5), the at least one cutter (10) being provided on a leading, in a rotational direction (R), longitudinal edge (11) of one of the expansion tabs (7) and extending at least along a portion of the axial extent of the one expansion tab.

REFERENCES:
patent: 2707897 (1955-05-01), Beeson
patent: 3200692 (1965-08-01), Catlin
patent: 4702654 (1987-10-01), Frischmann et al.
patent: 4984945 (1991-01-01), Bergner
patent: 5529449 (1996-06-01), McSherry
Communication of Mar. 12, 1998, Application No. 97810942.9 to applicant Hilti Aktiengesellschaft from European Patent Office, The Hague.

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