US 12,292,071 B2
Hybrid screw with compartmentalized wedge groove
Roland Schneider, Schlins (AT)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 18/015,376
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Jul. 2, 2021, PCT No. PCT/EP2021/068343
§ 371(c)(1), (2) Date Jan. 10, 2023,
PCT Pub. No. WO2022/012974, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 20185618 (EP), filed on Jul. 14, 2020.
Prior Publication US 2023/0279892 A1, Sep. 7, 2023
Int. Cl. F16B 25/00 (2006.01)
CPC F16B 25/0078 (2013.01) [F16B 25/0026 (2013.01); F16B 25/0042 (2013.01); F16B 25/00 (2013.01)] 11 Claims
OG exemplary drawing
 
1. 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.