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:
Feb. 19, 1991
Filed:
Apr. 09, 1987
Applicant:
Inventors:
Robert Hugel, Kaufering, DE;
Erich Leibhard, Munich, DE;
Assignee:
Hilti Aktiengesellschaft, Furstentum, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ;
U.S. Cl.
CPC ...
411 82 ;
Abstract
An anchor member to be fixed in a borehole by a permanently hardenable mass is formed as a sleeve-like member with the outside surface deformed inwardly at axially and circumferentially spaced areas so that the inside surface is deformed into a multi-sided cross-section. The inside surface can be four-sided with the inwardly deformed areas increasing the anchoring effect and preventing turning of the member when a fastening element is threaded into its trailing end. The sleeve-like member is closed at its leading end to avoid the hardenable mass from flowing into the member.