Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – With hole forming means
Patent
1997-03-19
1998-10-06
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
With hole forming means
411 31, 411 55, 411 49, 411 52, F16B 1304, F16B 1306
Patent
active
058167609
ABSTRACT:
A spreading anchor (1) including an anchor rod (2) provided at its front end, when viewed in a setting direction, with a head (3, 30) having at least several regions, which taper outwardly in the setting direction, and extending through an axial through-bore of an expansion sleeve(5) axially displaceable along the anchor rod (2, 20) and having a plurality of axial longitudinal slots (7) extending from a front end of the expansion sleeve (2, 20) and forming at least two, located opposite each other expansion tabs (6) provided at their free front ends with cutters (16), the spreading anchor (1) being supported against an upper surface of a ground (G) and further including rotation-transmitting driver elements for transmitting axial rotation, which is generated during setting of the anchor rod (2, 20), to the expansion sleeve (5).
REFERENCES:
patent: 948938 (1910-02-01), Skidmore
patent: 1503515 (1924-08-01), Phillips
patent: 4575294 (1986-03-01), Mermi
patent: 4692076 (1987-09-01), Herb
patent: 4702654 (1987-10-01), Frischmann
patent: 4797044 (1989-01-01), Velasco
patent: 4929134 (1990-05-01), Bergner
patent: 5112178 (1992-05-01), Overhues
Beck Hermann
Gassner Helmut
Hartmann Manfred
Kossian Susanne
Kunz Jakob
Hilti Aktiengesellschaft
Saether Flemming
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