Expansion anchor assembly

Details Expansion anchor assembly Expansion anchor assembly

1984-12-13

1987-01-13

Holko, Thomas J.

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

Having separate expander means

Including sleeve and distinct tapered expander

411 60, F16B 1306

Patent

active

046361235

ABSTRACT:
An expansion anchor assembly includes an expansion sleeve formed at least in part by axially extending extension sections, an expansion body and an anchor rod attached to the expansion body. By pulling the expansion body into the end of the sleeve formed by the expansion sections, the sections are spread radially outwardly. An axially extending part of the outside surface of the expansion body is formed by a plurality of outwardly tapering axially extending and circumferentially adjacent convex surfaces having an arc shape in the direction transverse to the axial direction of the expansion body. The radius of curvature of each arc-shaped convex surface is the same over its axial length. Each expansion section of the sleeve has an axially extending radially inner concave surface corresponding to one of the arc-shaped convex surfaces on the expansion body.

REFERENCES:
patent: 406565 (1889-05-01), Church
patent: 626040 (1889-07-01), Rowlands
patent: 681817 (1901-03-01), Smith
patent: 694345 (1902-03-01), Bennett
patent: 1959439 (1934-05-01), McIntosh
patent: 2319376 (1943-05-01), Wallace
patent: 2381050 (1945-08-01), Hardinge
patent: 2642768 (1953-06-01), Ogburn
patent: 2783673 (1957-03-01), Lewis et al.

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