US 11,719,270 B2
Expansion anchor with a nonaxisymmetric recess
Hideki Shimahara, Grabs (CH)
Assigned to Hilti Akiiengesellschaft, Schaan (LI)
Appl. No. 17/53,561
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Jun. 7, 2019, PCT No. PCT/EP2019/064958
§ 371(c)(1), (2) Date Nov. 6, 2020,
PCT Pub. No. WO2019/243084, PCT Pub. Date Dec. 26, 2019.
Claims priority of application No. 18178750 (EP), filed on Jun. 20, 2018.
Prior Publication US 2021/0231150 A1, Jul. 29, 2021
Int. Cl. F16B 13/06 (2006.01)
CPC F16B 13/065 (2013.01) [F16B 13/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An expansion anchor comprising:
an anchor bolt having a front region;
an expansion sleeve surrounding the anchor bolt; and
an expansion body located in the front region of the anchor bolt, the expansion body having a converging zone for expanding the expansion sleeve, the expansion body having at least one expansion body recess, the at least one expansion body recess being delimited by an expansion sleeve abutment wall, the at least one expansion body recess having a nonaxisymmetric cross-section.