Hybrid screw with compartmentalized wedge groove
AssigneeHilti Aktiengesellschaft
InventorRoland Schneider
Life of this patent
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Abstract
A screw having a shank, wherein the shank has a tip end, a rear end, and a longitudinal axis extending through the tip end and through the rear end, wherein the tip end and the rear end are opposite ends of the shank, and a screw thread, which is connected to the shank, and which winds around the shank, wherein a wedge groove is provided in the shank, which wedge groove winds around the shank and extends alongside at least a section of the screw thread, wherein the wedge groove is delimited by a rearwardly tapered wedge flank for wedging a grout shell surrounding the shank. At least one ridge is provided within the wedge groove, wherein the ridge compartmentalizes the wedge groove.
Claims11
A screw comprising:
- a shank having a tip end, a rear end, and a longitudinal axis extending through the tip end and through the rear end, the tip end and the rear end being opposite ends of the shank;
- a screw thread connected to the shank and winding around the shank;
- a wedge groove being provided in the shank, the wedge groove winding around the shank and extends alongside at least a section of the screw thread, the wedge groove being delimited by a rearwardly tapered wedge flank for wedging a grout shell surrounding the shank;
- and
- at least one ridge within the wedge groove, wherein the ridge compartmentalizes the wedge groove.
Dependencies are inferred from the claim text.