Patent ID: 7587873

Claim:
An expansion wedge anchor for insertion in a hole delimited by a wall, comprising an expander means and an expansion means, said expansion means being provided at a leading end of said expander means, said expander means comprising a leading flaring means and a trailing flaring means both disposed on the leading end of said expander means, said expander means comprising a threaded section on a trailing end thereof, said expansion means including leading and trailing ends and being expandable at said trailing end and being adapted to engage the wall of the hole when said expander means is positioned in the hole, the expansion means defining a leading support adapted to contact a bottom of the hole and adapted to stop the movement of the expansion means within the hole, when the expander means is positioned in the hole, while said expander means is adapted to relatively continue to move towards the bottom of the hole to engage said trailing flaring means of said expander means with a trailing edge of said expansion means to expand said trailing end of said expansion means within the hole, wherein, upon longitudinal withdrawal of said expander means from the hole, said expander means displaces longitudinally relative to said expansion means with said leading flaring means gradually causing at least one of said leading and trailing ends of said expansion means to expand, whereby a leading edge of said expansion means engages the wall of the hole.