Patent ID: 11867210
Assignee: YUJI DOHI
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 5:
6. A method for fixing an expansion anchor in an installation region, the expansion anchor comprising:
a hollow anchor body formed with a non-expansive section and an expansive section at a portion to be inserted into a pre-formed hole in an installation region, the expansive section being expansively deformable in a direction orthogonal to an axis of the anchor body;
an expansion actuator that is capable of expansively deforming the expansive section of the anchor body; and
a sleeve that externally surrounds at least a portion of the expansive section of the anchor body,
the sleeve and the anchor body being configured to be movable relative to each other such that, when a pull-out force is exerted on the anchor body with the expansive section expanded, the sleeve being stopped in the pre-formed hole while allowing the anchor body to retreat; and
the sleeve spanning the expansive section and the non-expansive section of the anchor body;, the method comprising:
inserting the sleeve alone into the pre-formed hole, subsequently inserting the anchor body into the pre-formed hole via the sleeve, and thereafter expanding the expansive section of the anchor body by the expansion actuator.