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:
Sep. 16, 1997
Filed:
Jun. 24, 1996
Applicant:
Inventors:
Werner Fuchs, Schwaikheim, DE;
Antonius Winkeljann, Landsberg, DE;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ; E21D / ;
U.S. Cl.
CPC ...
52705 ; 52711 ; 5274214 ; 5274521 ; 411 82 ;
Abstract
A method forming a pressure-free expansion anchor in a cylindrical borehole (2) with an undercut (3) in a receiving material forming an anchorage, with an undercut expansion dowel (5) inserted into the borehole. The dowel (5) has an axially-extending threaded rod (9) extending through a sleeve (6) with outwardly displaceable segments (7) on the sleeve for effecting a positive lock in the region of the undercut. The method involves introducing a curable mortar (M) into the region of the undercut, where the mortar forms a bond with the region of the undercut and the displaced elements (7) of the sleeve (6).