Expansion anchor assembly

Details Expansion anchor assembly Expansion anchor assembly

1983-02-22

1984-11-13

Holko, Thomas J.

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

Having separate expander means

Frangible member

411 39, 411 63, F16B 1304

Patent

active

044822774

ABSTRACT:
An expansion anchor assembly is made up of an anchor bolt and an expansion sleeve encircling and secured in an annular recess on the bolt. Adjacent the annular recess, the anchor bolt has a frusto-conical section. The expansion sleeve has diametrically opposite reduced thickness wall sections with a projection extending outwardly of the surface of the sleeve along each of the reduced thickness wall sections. When the expansion anchor assembly is inserted into a prepared borehole and the frusto-conical section is drawn into the sleeve, the sleeve breaks into axially extending sections along the reduced thickness wall sections and a uniform contact is provided between the sleeve section and the borehole surface.

REFERENCES:
patent: 1499072 (1924-06-01), Pleister
patent: 2293491 (1942-08-01), Cox
patent: 2709389 (1955-05-01), Kleij
patent: 3750526 (1973-08-01), Lerich
patent: 3766819 (1973-10-01), Giannuzzi
patent: 3922947 (1975-12-01), Leonardo et al.
patent: 4287807 (1981-09-01), Pacharis et al.

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