Anchor system, in particular undercut anchor system
AssigneeHilti Aktiengesellschaft
InventorsPeer Schmidt, Joerg Appl, Serhey Khandozhko
Life of this patent
Estimating the term…
Abstract
In an anchor system, for example, an undercut anchor system, having an anchor bolt with an expansion element, preferably at least one engagement means for the purpose of bearing a load, an expansion sleeve surrounding the anchor bolt, a means for detecting an axial end position of the expansion sleeve on the expansion element when the expansion sleeve is expanded and moved axially, the axial end position of the expansion sleeve should be able to be detected precisely. This problem is solved in that the means has a sensor for the purpose of detecting the axial end position.
Claims15
1-15. (canceled)
An anchor system, comprising:
- an expansion anchor comprising,
- an anchor bolt;
- an expansion sleeve surrounding the anchor bolt;
- an expansion member carried by the anchor bolt and being configured to expand the expansion sleeve in response to axial and rotational movement of the anchor bolt relative to the expansion sleeve;
- and
- an engagement mechanism formed on at least one of the anchor bolt and the expansion sleeve, the anchor mechanism being configured to bear a load and facilitate axial movement of the anchor bolt relative to the expansion sleeve;
- and
- a sensor device configured to determine when a predetermined axial end position of the expansion sleeve relative to the anchor bolt has been reached during expansion of the expansion sleeve.
A method for fastening an undercut anchor, comprising the steps:
- inserting an undercut anchor into a bore hole;
- connecting the undercut anchor to a setting tool;
- applying torque to an expansion sleeve using the setting tool, such that the expansion sleeve is made to rotate;
- applying axial pressure to the expansion sleeve such that the expansion sleeve is moved axially in the direction of the expansion element and the expansion sleeve is expanded by the expansion element;
- halting of the axial movement and the rotary movement of the expansion sleeve once a prespecified axial end position of the expansion sleeve relative to an anchor bolt has been reached;
- wherein the axial end position is detected using a sensor device.
Dependencies are inferred from the claim text.