Expansion anchor assembly

Details Expansion anchor assembly Expansion anchor assembly

1989-10-17

1990-11-06

Wilson, Neill R.

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

Having separate expander means

Including sleeve and distinct tapered expander

411 60, 411 68, F16B 1306

Patent

active

049682008

ABSTRACT:
An expansion anchor assembly is made up of an expansion sleeve and an anchor rod. At one end, the expansion sleeve has a plurality of separate expansion parts radially deflectable about bending locations, by drawing an expansion cone on one end of the anchor rod into engagement with the expansion parts. Expansion parts can be displaced radially outwardly into a conically widened undercut in a borehole. To achieve surface area contact with the undercut, when the expansion parts are deflected outwardly, the radially inner and outer surfaces of the expansion parts are provided with a radius of curvature increasing from the bending locations to the free ends of the expansion parts.

REFERENCES:
patent: 4636123 (1987-01-01), Herb
patent: 4656806 (1987-04-01), Leibhard et al.
patent: 4865246 (1989-09-01), Miyanaga

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