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US 11,767,870 B2Granted
Expansion anchor with different expansion angles
AssigneeHilti Aktiengesellschaft
InventorsKarl Haeussler, Hideki Shimahara, Mareike Frensemeier, Yijun Li, Wentao Yan, Arturo Guevara Arriola
Life of this patent
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Abstract
An expansion anchor includes an anchor bolt and an expansion sleeve which surrounds the anchor bolt. The expansion sleeve has an expansion tongue and an anchor tongue and the anchor bolt has a backward-pointing expansion slope for radially displacing the expansion tongue and a backward-pointing anchor slope for radially displacing the anchor tongue. The backward-pointing anchor slope extends more steeply than the backward-pointing expansion slope at least in some regions.
Claims14
An expansion anchor, comprising:
- an anchor bolt;
- and
- an expansion sleeve, wherein the expansion sleeve surrounds the anchor bolt;
- wherein the expansion sleeve has an expansion tongue and an anchor tongue;
- wherein the anchor bolt has a backward-pointing expansion slope and wherein the expansion tongue is radially displaceable by the backward-pointing expansion slope;
- wherein the anchor bolt has a backward-pointing anchor slope and wherein the anchor tongue is radially displaceable by the backward-pointing anchor slope;
- wherein the backward-pointing anchor slope extends more steeply than the backward-pointing expansion slope at least in a region;
- wherein a cavity is formed in the anchor bolt, wherein the backward-pointing anchor slope is formed at a front end of the cavity, wherein the anchor tongue is partially received in the cavity, and wherein a radially outward-pointing claw is disposed at a free end of the anchor tongue.
5 more elements
Dependencies are inferred from the claim text.