Patent ID: 7056075

Claim:
A compact anchor for embedding in a pre-drilled masonry or concrete hole comprising: a forward end and an opposite rear end defining an axial length; an external helical cutting thread for tapping the masonry or concrete hole; a solid portion extending from approximately the forward end towards the rear end for at least part of the length of the anchor; a hollow portion extending from the rear end towards the forward end for at least part of the length of the anchor, the hollow portion comprising: (a) a threaded fixture attaching portion configured and adapted to secure a structure to the anchor, and (b) a tool engagement portion adjacent the fixture attaching portion, the tool engagement portion configured and adapted to engage an anchor inserting tool for providing rotational torque to the anchor; an axially-broad arcuate land having a radial height and disposed between successive rows of the helical cutting thread for wedging the anchor into the pre-drilled masonry or concrete hole, the land having an axial length at least twice its height and configured to abrade the hole for wedging the anchor therein when inserted; and a valley disposed on either side of the land between the land and the cutting thread defining a root diameter to axially space apart the land and the cutting thread.