Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1997-01-30
1998-05-05
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 45, 411 72, F16B 1306
Patent
active
057465576
ABSTRACT:
An expansion dowel including an expansion sleeve one end portion (4) of which receives a load and an opposite portion of which has an expansion region divided into expansion tabs by a plurality of longitudinal slots (7) extending toward a leading end of the expansion sleeve (2), with the expansion tabs (6) being connected with the expansion sleeve (2) by a first ductile joint (5) and having an annular collar (8) interrupted by the longitudinal slots (7), and an expansion member (13) displaceable in an axial through-bore (3) of the expansion sleeve (2) from an initial position to an end position upon expansion of the expansion region of the expansion sleeve (2), with the expansion tabs (6) projecting beyond the annular collar (8) and integrally connected with a distance segment (10) of the expansion sleeve (2), which distance segment collapses radially inward upon expansion of the expansion tabs.
REFERENCES:
patent: 2033100 (1936-03-01), Kellogg
patent: 3874264 (1975-04-01), Polos
patent: 4968199 (1990-11-01), Haage et al.
patent: 5116176 (1992-05-01), Yousuke
patent: 5342157 (1994-08-01), Fischer
European Search Report, No. EP 97 100 18.8 dated May 26, 1997.
Hilti Aktiengesellschaft
Wilson Neill R.
LandOfFree
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