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:
Jul. 31, 2012
Filed:
Nov. 24, 2009
Markus Frommelt, Schaan, LI;
Michael Sproewitz, Feldkirch-Tisis, AT;
Markus Frommelt, Schaan, LI;
Michael Sproewitz, Feldkirch-Tisis, AT;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A fastener driving tool for an insulation material plug that anchored with a fastener in the substrate has a first drive shaft and a second drive shaft. The first drive shaft has a shank extending along a longitudinal axis having a first rotary carrier for the fastener at a first end and that has a second rotary carrier second end. The second drive shaft has a hollow shank with a third carrier means for the insulation material plug at a first end. A coupler is provided that can be disengaged by axial pressure and arranged at a distance from the first end. The coupler has locking elements that engage into recesses in order to transfer a torque from the first drive shaft to the second drive shaft. Grooves guide the locking elements are adjacent to a recess and, extend helically along the circumference.