The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2000
Filed:
Jun. 19, 1997
Reinhard Lins, Sevelen, CH;
Erich Wisser, Bregenz, AT;
Helmut Gassner, Triesenberg, LI;
Susanne Kossian, Feldkirch, AT;
Rainer Kussmaul, Thuringen, AT;
Hermann Beck, Feldkirch-Tisis, AT;
Markus Hartmann, Frastanz, AT;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A tool for setting self-cutting undercut anchors (6) in boreholes (B) in a receiving material (G) includes anchors (6) formed of an axially extending anchor rod (7) with a conically shaped surface at a leading end of the rod widening in the setting direction, and an axially extending rotatable sleeve (9) laterally enclosing the anchor rod and which is axially displaceable against the conically shaped surface for effecting radially outward spreading of cutting tabs located at the leading end of the sleeve. The cutting tabs form an undercut (U) in the inner surface of the borehole (B) as the sleeve is rotated. The tool has a rotatable propelling part (2) for the sleeve (9) of the undercut anchor (6) and a trailing end (3) of the propelling part is arranged for insertion into a chuck of a rotary hammer drill. The propelling part (2) cooperates with a support element (4) arranged to be supported by the surface of the receiving material (G) in which the borehole (B) is formed. The support element (4) has a receptacle (5) for the trailing end of the anchor rod in which the anchor rod can be axially fixed. The propelling part (2) can be displaced axially relative to the support element.