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:
Oct. 29, 1996
Filed:
Jan. 20, 1995
Manfred Haage, Dornstetten, DE;
Guenter Seibold, Pfalzgrafenweiler, DE;
Bernd Plocher, Rottenburg, DE;
Bernd Hein, Freudenstadt, DE;
Wilfried Weber, Schopfloch, DE;
fischerwerke, Artur Fischer GmbH & Co KG, Waldachtal, DE;
Abstract
The expansible metal anchor (1) for anchoring in a hole drilled in a component includes a shank part (2) and an expander cone (4) having a polygonal cross-section defining several faces (13) at its front end. On each face (13) of the expander cone (4) an expansible segment (5) is arranged spaced from that face by a gap (7) corresponding approximately to the distance (8) by which the expansible segments (5) project radially from the shank part (2). Each expansible segment (5) is joined to the shank part (2) at its end face directed towards the shank part (2) by web members (6, 6') constituting predetermined break points. As the expansible anchor is driven into the hole drilled in the component, the web members (6,6') break off, so that the expansible segments (5) are displaceable on the faces (13) of the expander cone. The expansible anchor (1) is manufactured from powdered metal by an injection-molding process using a system of binders with subsequent removal of the binders and sintering, and a slide member of the mold divided at the corner edges (20) of the faces (13) is used to make the gap (7) between the expansible segments (5) and the faces (13) of the expander cone (4).