F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/5
F16B 13/04 (2006.01) F16B 13/00 (2006.01) F16B 31/02 (2006.01)
Patent
CA 1252319
ABSTRACT An expanding anchor assembly for insertion into a bore in ground. The assembly comprises a one-piece expanding sleeve divided by longitudinal slits into seg- ments. A conical expander engages the bore internal end of the expanding sleeve for expanding same. A bolt is also provided and has a bore internal end engaging the expander and a bore external end. A tightening member is provided on the bore external end of the bolt. A spacer bushing extends around the bolt and engages a sleeve-like tube section. A washer is provided beneath the tightening means for clamping a workpiece against the surface of the ground. The sleeve-like tube section is a soft steel tube section having a pronounced plastic flow limit. The tube section has a predetermined wall thickness such that, upon application of a setting force specific for the bolt anchor, compression stresses will prevail in the tube section which equal the stresses pre- vailing in the material of the tube section when the plastic flow limit is reached. The tube section has a hardened thin surface layer breaking in a brittle fashion when the sleeve-like tube deforms axially after attaining the anchor specific setting force.
449922
Liebig Heinrich
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
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