Self-drilling hollow wall anchor

Details Self-drilling hollow wall anchor Self-drilling hollow wall anchor

2008-01-22

2008-01-22

Saether, Flemming (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

With hole forming means

C411S080600

Reexamination Certificate

active

07320569

ABSTRACT:
A high strength failure-resistant hollow wall anchor having a self drilling threaded installation structure adapted to be broken, after positioning, by an inserted screw, into expandable anchoring elements. The anchoring elements engage internally formed cams and the distal surface of the wall into which the anchor is deployed and are comprised of a plastic sufficiently rigid to effect a threaded insertion and to be broken apart, but which plastic is also sufficiently flexible to be able to form the expansion anchor member on the distal surface of a wall. The anchor includes anti-rotation elements to retard overtightening and anchor removal prior to screw removal.

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patent: 6139236 (2000-10-01), Ito
patent: 6494653 (2002-12-01), Remmers
patent: 2005/0175429 (2005-08-01), Panasik et al.

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