Method of setting fastening elements in a hard receiving material
AssigneeHilti Aktiengesellschaft
InventorsHorst-Detlef Gassman, Ernst Wohlwend
Life of this patent
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Abstract
Fastening elements, such as bolts, studs or nails, are inserted into a hard receiving material, such as concrete or rock, first, by drilling a blind borehole into the receiving material. The diameter of the borehole is formed so that it is greater than the diameter of the leading end of the fastening element. A setting device containing the fastening element is then aligned with the blind borehole and the fastening element is driven into the receiving material. The fastening element enters the receiving material at the base of the blind borehole. The length of the fastening element inserted into the receiving material is at least half the axial length of the borehole and may have a length considerably greater than the axial length of the borehole.
Claims6
Method of setting fastening elements, such as bolts, nails and studs, in a hard receiving matrial, such as concrete and rock, comprising the steps of drilling a blind borehole into the receiving material, aligning an explosive powder-operated setting device containing a fastening element with the blind borehole, and driving the fastening element from the setting device through the blind borehole and into the receiving material.
Dependencies are inferred from the claim text.