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:
Dec. 14, 2010
Filed:
Sep. 26, 2008
Georg Oberndorfer, Bludenz, AT;
Michael Splitt, Munich, DE;
Marc Schaeffer, Sigmarzell-Niederstaufen, DE;
Simon Oppeneiger, Hoechst, AT;
Juergen Gebhard, Alstaetten, CH;
Georg Oberndorfer, Bludenz, AT;
Michael Splitt, Munich, DE;
Marc Schaeffer, Sigmarzell-Niederstaufen, DE;
Simon Oppeneiger, Hoechst, AT;
Juergen Gebhard, Alstaetten, CH;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A fastening element has a shaft (), and a tapping thread () carried by the shaft () and having at least one screw thread () a section () of which that adjoins the thread pilot (), having a plurality of following one another thread steps () having different cross-sections, with a cross-section of the at least one screw thread () decreasing stepwise toward the thread pilot () from a thread step () to a thread step (), with the thread steps () having respective cutting edge-forming end surfaces () aligned, at least partially, in a direction of the thread pilot ().