Method of forming anchors
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United States of America Patent
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Feb 9, 2016
Grant Date -
Feb 14, 2013
app pub date -
Aug 10, 2012
filing date -
Feb 12, 2010
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Abstract
The inventive method of forming anchors comprises following steps. A rod-shaped workpiece is roll-formed by penetrating the rod-shaped workpiece with two wedge-shaped tools at two points. The two points are arranged on opposite sides and axially separated of a plane perpendicular to an axis of the rod-shaped workpiece. The two wedge-shaped tools are axially approaching to the plane while the rod-shaped workpiece is revolved around the axis. The roll-formed workpiece is separated along the plane for forming two bolts. A sleeve is applied around the anchor bolts.
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