Patent ID: 7448303

Claim:
A pipe extraction tool comprising: a stem having a first end and a second end; a tapered wedge attached to the first end of the stem; a plurality of wrench jaws disposed adjacent the first end of the stem and being configured for insertion into the bore of a pipe and configured to grip the bore of the pipe to allow the tool to rotate the pipe, the plurality of wrench jaws having an angled inner surface for engaging the wedge, wherein the plurality of wrench jaws are slidable in a direction parallel to the stem towards the second end to thereby expand the plurality of wrench jaws radially to grip the bore of a pipe, wherein the tapered wedge is in a fixed position relative to the stem, and further comprising a draw bar which is generally concentric to the stem, wherein the draw bar passes through the stem and the wedge and is connected to a base plate, the base plate being disposed adjacent the plurality of wrench jaws such that movement of the draw bar in a direction parallel to the to the axis of the stem and towards the second end of the stem moves the plurality of wrench jaws in said direction such that the plurality of wrench jaws interact with the tapered wedge to thereby move the plurality of wrench jaws outwardly in a direction generally perpendicular to the axis of the stem.