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:
May. 22, 2012
Filed:
Oct. 29, 2008
Applicants:
Franz Huber, Markt Wald, DE;
Simon Oppeneiger, Hoechst, AT;
Inventors:
Franz Huber, Markt Wald, DE;
Simon Oppeneiger, Hoechst, AT;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16B 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A screw () has a shaft (), a thread () which is arranged in at least some areas over the circumference of the shaft () and which defines a helix (), and cutting bodies () made of a material having hardness greater than the hardness of the thread () and arranged in recesses () of the thread (), with the cutting bodies () having their longitudinal extension oriented along the helix () so that their longitudinal axes () enclose an angle (A; B; C; D, E) of −35° to +35° with the respective tangents of the helix ().