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1. (WO2017148731) METHOD FOR PRODUCING AN EXPANSION ANCHOR BY MEANS OF DIAMETER REDUCTION OF A SLEEVE BLANK, AND EXPANSION ANCHOR

Pub. No.:    WO/2017/148731    International Application No.:    PCT/EP2017/053847
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Feb 22 00:59:59 CET 2017
IPC: F16B 13/06
Applicants: HILTI AKTIENGESELLSCHAFT
Inventors: DOMANI, Guenter
SHIMAHARA, Hideki
HAEUSSLER, Karl
Title: METHOD FOR PRODUCING AN EXPANSION ANCHOR BY MEANS OF DIAMETER REDUCTION OF A SLEEVE BLANK, AND EXPANSION ANCHOR
Abstract:
The invention relates to a method for producing an expansion anchor, wherein a bolt is provided, which has an expansion body for expanding an expansion sleeve surrounding the bolt, an annular sleeve blank having an opening is provided, the bolt is introduced into the opening of the annular sleeve blank, and the annular sleeve blank is diameter-reduced while the bolt is located in the opening of the annular sleeve blank. The invention further relates to expansion anchors, which can be obtained by means of a method according to the invention, in particular anchors of the bolt type having closed annular expansion sleeves and in particular anchors having expansion sleeves having protruding noses, each of which are arranged on a closing fold of the expansion sleeve.