received by the international Bureau on 27 August 2013 (27.08.2013)

CLAIMS

1. A self-drilling plasterboard screw anchor comprising:

an elongated anchor element (l) having a drill end (2), and opposite thereto, an end (3) with means for engagement with a rotary tool (14) and a threaded screw hole (6) transverse to the length of the anchor element, suitable for engaging a screw or bolti characterized in that said elongated anchor element (1) is securely held by, or integral with, a flexible resilient member having a collar (12) having an outer diameter greater than the drill end (2) drilling diameter and a round, hollow, straight tubular section (10), which is suitable for accommodating the screw or bolt (16), and is disposed perpendicular to said anchor element and ends directly at said transverse threaded screw hole (6), and in that the cross section of said anchor element is substantially semi-circular and thus provides room in the drilled hole for the tubular section (10) when it is folded up against the anchor element.

2. Anchor according to Claim 1, characterized in that said flexible resilient member is made of semi-hard plastics material.

3. Anchor according to Claim 1 or 2, characterized in that the elongated anchor element (1) is held in a hollow holder tube which has a semicircular cross section and is integral with said round hollow tubular section.

4. Anchor according to Claim 1 or 2, characterized in that the elongated anchor element and the round hollow tubular section are a single piece of plastic.

5. Anchor according to one of the preceding claims, characterized in that the round tubular section has approximately the same inner diameter as the threaded screw hole (6) in the anchor element (1). 6. Anchor according to one of the preceding claims, characterized in that the round tubular section is provided with longitudinal slits (17) in its midsection, facilitating radial expansion beyond the diameter of the drilling end drilling diameter as the round tubular section (10) is longitudinally compressed, when a screw or bolt (16) is screwed into said threaded screw hole (6).