Patent ID: 9512868
Filing Date: 2016-12-06
CPC Classification: F16B

Claim Text:
1. An anchor fastening element dimensioned for being fastened in a drilled hole of a concrete part as an anchoring base, and for fastening an object in a manner so as to absorb impact loads on the object such as those occurring during earthquakes in an energy dissipating manner, comprising: a threaded bolt of solid, monolithic construction having a nut to be screwed on the threaded portion for fastening the object to the threaded portion and the concrete part in a mounted condition of the anchor fastening element; wherein the anchor fastening element is harder in the threaded portion and the anchor portion, than in the shank portion, the threaded portion and the anchor portion on the one hand and the shank portion on the other hand are constructed to exhibit a different ductility behavior in the mounted condition of the anchor fastening element, the threaded portion and the anchor portion having a lower ductility with less plastic deformation capacity, when in the mounted condition of the anchor fastening element, and the shank portion, when in the mounted condition of the anchor fastening element, having a higher ductility with higher plastic deformation capacity adapted to absorb overload impact loads on the object by the shank portion.