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:
Jun. 17, 2014
Filed:
May. 10, 2011
Peter Gstach, Schaan, LI;
Michael Beckert, Diepoldsau, CH;
Tobias Neumaier, Rankweil, AT;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
In the case of a thread-tapping screw (), especially a concrete screw (), including a screw head (), a screw shank () and a thread () that is formed on at least part of the screw shank (), whereby at least one longitudinal groove () is formed on a front section () of the screw (), starting at the end () of the screw on the screw shank (), and the at least one longitudinal groove () is delimited on the screw shank () by two lengthwise sides () running essentially radially relative to a longitudinal axis () of the screw (), it is the objective that the tightening torque needed when the screw () is being screwed into a drilled hole should be slight, and that the screw () should be produced cost-effectively. Each longitudinal groove (), at least one lengthwise side () is oriented at an angle α between 1° and 20° relative to a straight line running parallel to the longitudinal axis () of the screw (), and/or the at least one longitudinal groove () is configured on the screw shank () so as to be helical.