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US 12,209,603 B2Granted
Fastening element with particle coating
AssigneeHilti Aktiengesellschaft
InventorsMareike Frensemeier, Jens Kondratiuk, Arturo Guevara Arriola
Life of this patent
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Abstract
A fastening element is provided, in particular an expansion anchor, having a bolt and a retainer arranged on the bolt for introducing tensile forces into the bolt, the bolt having a first metal friction surface and the retaining element having a second metal friction surface, which is associated with the first friction surface. A coating in which particles, preferably hard particles, are embedded is arranged on at least one of the two friction surfaces.
Claims5
A fastening element comprising
- a bolt;
- a retainer arranged on the bolt for introducing tensile forces into the bolt;
- the bolt having a metal first friction surface and the retainer having a metal second friction surface associated with the first friction surface;
- and
- a coating having embedded particles and arranged on at least one of the first or second friction surfaces;
- the coating having a lower hardness than the particles and at least a portion of all of the embedded particles is completely enclosed by the coating,
- wherein the retainer is a nut screwed to the bolt.
4 more elements
A fastening element comprising
- a bolt;
- a retainer arranged on the bolt for introducing tensile forces into the bolt;
- the bolt having a metal first friction surface and the retainer having a metal second friction surface associated with the first friction surface;
- and
- a coating having embedded particles and arranged on at least one of the first or second friction surfaces;
- the coating having a lower hardness than the particles and at least a portion of all of the embedded particles is completely enclosed by the coating,
- wherein the particles have a particle size D50 between 0.7 μm and 3.0 μm.
4 more elements
A fastening element comprising
- a bolt;
- a retainer arranged on the bolt for introducing tensile forces into the bolt;
- the bolt having a metal first friction surface and the retainer having a metal second friction surface associated with the first friction surface;
- and
- a coating having embedded particles and arranged on at least one of the first or second friction surfaces;
- the coating having a lower hardness than the particles and at least a portion of all of the embedded particles is completely enclosed by the coating,
- wherein the particles have a particle size D50 of 1.5 μm.
4 more elements
A fastening element comprising
- a bolt;
- a retainer arranged on the bolt for introducing tensile forces into the bolt;
- the bolt having a metal first friction surface and the retainer having a metal second friction surface associated with the first friction surface;
- and
- a coating having embedded particles and arranged on at least one of the first or second friction surfaces;
- the coating having a lower hardness than the particles and at least a portion of all of the embedded particles is completely enclosed by the coating,
- wherein the particles have a particle size D97 of 6.0 μm.
4 more elements
A fastening element comprising
- a bolt;
- a retainer arranged on the bolt for introducing tensile forces into the bolt;
- the bolt having a metal first friction surface and the retainer having a metal second friction surface associated with the first friction surface;
- and
- a coating having embedded particles and arranged on at least one of the first or second friction surfaces;
- the coating having a lower hardness than the particles and at least a portion of all of the embedded particles is completely enclosed by the coating,
- wherein the retainer is an expansion body and the bolt has an expansion region for the expansion body, and
- wherein the embedded particles may have a Mohs hardness of 7, an Einlehner abrasiveness of 25 and a density of between 2.2 and 2.7 g/cm3.
5 more elements
Dependencies are inferred from the claim text.