Expansion dowel assembly

Details Expansion dowel assembly Expansion dowel assembly

1982-07-16

1985-02-26

Holko, Thomas J.

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

Having separate expander means

Having securing element projecting through aperture in sleeve

411 33, 411 77, F16B 1304

Patent

active

045015201

ABSTRACT:
An expansion dowel assembly is used to anchor a part to the surface of a structural member. The expansion dowel assembly is inserted into and anchored within a borehole in the structural member. The assembly includes a support tube, an anchor rod extending axially through the support tube, and expansion elements positioned within the support tube so as to be radially displaced by the anchor rod into anchoring engagement with the structural member. The expansion elements are positioned within the support tube in bearing contact with a support surface. The support surface contacting the expansion elements faces toward the bottom of the borehole into which the dowel assembly is inserted. The support surface is a web formed as part of the support tube and it is axially displaceable when a force acting on the anchor rod exceeds a predetermined level.

REFERENCES:
patent: 4270434 (1981-06-01), Bucheli
patent: 4293259 (1981-10-01), Liebig

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