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:
Nov. 18, 1997
Filed:
Mar. 22, 1996
Rainer Loose, Marktoberdorf, DE;
Hilti Aktiengesellschaft, Schaan, LU;
Abstract
An expansion dowel includes an axially extending cylindrically-shaped expansion sleeve (2) having an axially extending expansion region (5) with one of axially extending slots or grooves therein and a central bore (4) tapering inwardly toward a leading end of the sleeve facing in the setting direction (S). The central bore (4) is shaped to receive an expanding member (6). The expanding member (6) has a trailing end face in contact with a safety element (11) for preventing axial displacement of the expanding member (6) opposite to the setting direction. The safety element (11) has a radially outer circumferential surface that can be enlarged in the circumferential direction by a pin-shaped member (7) having a conically-shaped region which can be driven in the setting direction into the safety element. The expanding member (6) is shaped at its trailing end region for receiving a leading end region (9) of the pin-shaped member (7).