Patent ID: 7815407

Claim:
A self-drilling anchor assembly for deployment into a hollow wall, comprising: (a) an elongated tapered plastic body having a first and a second ends, an external helical threaded portion between the first and the second ends, a central longitudinal clear bore, two diametrically opposed break-away slotted portions extending from the second end through the threaded portion, and an axial driving flange concentrically positioned relative to the tapered body first end, wherein the axial driving flange includes an inner and an outer walls, a central clear aperture for receiving a rotating screw driver, and at least two diametrically opposed notches for receiving a rotating driver for rotating the tapered body into the hollow wall; and (b) an anchoring means including an externally threaded screw, a collar, and at least two diametrically opposed separable arms, the threaded screw centrally received in the central longitudinal bore and including a slotted head having an outer surface circumferentially biased adjacent to the inner wall of the flange, the collar internally threaded for receiving the screw, and the separable arms having a first spring loaded ends and a second pointed ends, the first spring loaded ends pivotally attached, along a longitudinal axis, to the collar, the second ends of the separable arms forming a disconnected drilling tip when pivoted in a collapsed orientation relative to the screw and an anchor supporting orientation when separated by rotation of the screw through the break away slotted portions at right angles relative to the screw for engagement of the separable arms with an inner surface of the hollow wall to be anchored.