Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – With hole forming means
Patent
1998-09-23
1999-11-23
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
With hole forming means
411 541, 411 571, F16B 1304, F16B 1306
Patent
active
059889640
ABSTRACT:
A drive-in dowel including an inner sleeve (2) having a load application element (3), a cone-shaped widening section (5) formed at a front, in a setting direction (S), end of the inner sleeve (2), and a substantially cylindrical support section (6) adjoining the cone-shaped widening section (5) and having an outer diameter (w) which is smaller than a largest diameter (d) of the cone-shaped widening section (5), and an outer sleeve (7) arranged coaxially with the inner sleeve (2) and having, in its front, in the setting direction (s), region, a plurality of expansion tabs (8) separated from each other by longitudinal slots and radially expandable upon the outer sleeve (7) being impact driven over the cone-shaped widening section (5) of the inner sleeve (2), with the expansion tabs (8) being provided with annularly arranged, chisel-like cutters (11).
REFERENCES:
patent: 2171985 (1939-09-01), Mushet
patent: 3965794 (1976-06-01), Dorgnon
patent: 4929134 (1990-05-01), Bergner
patent: 5332346 (1994-07-01), Shinjo
patent: 5807049 (1998-09-01), Beck et al.
patent: 5816760 (1998-10-01), Mattner et al.
Gassner Helmut
Kossian Susanne
Lins Reinhard
Werner Michael
Wisser Erich
Hilti Aktiengesellschaft
Wilson Neill
LandOfFree
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