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United States of America Patent
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Apr 5, 2016
Grant Date -
Jan 9, 2014
app pub date -
Jan 10, 2012
filing date -
Jan 13, 2011
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Abstract
Rotationally symmetrical force-application means with, as viewed axially, a star-shaped outer contour or inner contour, for connecting elements, wherein the individual arms of the star are designed as pointed arcs, of which the outer points lie on a common outer circle, wherein an associated counterpart, in particular a bit, insert or screw head, has a mating contour which is adapted to the contour of the force-application means such that the radii of the flanks of the force-application means and the counterpart end up butting against one another in such a manner as to achieve a planar pressing surface.
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