Expansion dowel assembly

Details Expansion dowel assembly Expansion dowel assembly

F - Mech Eng,Light,Heat,Weapons

16

B

85/25

F16B 13/10 (2006.01) F16B 13/06 (2006.01) F16B 13/08 (2006.01)

Patent

CA 1222154

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 respective support surfaces. The support surfaces contacting the expansion elements face toward the bottom of the borehole into which the dowel assembly is inserted. The support surfaces are formed as webs as parts of the support tube. When a force acting on the anchor rod exceeds a predetermined level, the expansion elements apply force to the webs, they yield, or break, thereby permitting axial movement of the expansion elements.

407358

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