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:
Jul. 07, 1987
Filed:
Jun. 30, 1986
Applicant:
Inventor:
Arndt Bergner, Munich, DE;
Assignee:
Hilti Aktiengesellschaft, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ;
U.S. Cl.
CPC ...
411 32 ; 411 39 ; 411 45 ; 411 55 ; 411 57 ; 411 75 ;
Abstract
An expansion anchor assembly for use in a bore with an undercut section adjacent the base of the bore, includes an axially elongated expansion sleeve and an anchor bolt positioned within the sleeve with an expansion cone at one end of the bolt. The expansion sleeve is slit from one end for a portion of its axial length. By drawing the expansion cone into the slit end of the sleeve, the sleeve can be expanded. An expansion element is seated within a recess in the outside surface of the sleeve. The base of the recess has a decreasing depth in the direction toward the slit end of the sleeve. The expansion element secures the expansion anchor assembly within the bore.