Patent ID: 6511266
Filing Date: 2003-01-28
Classification: B23B,B27G,H02G,Y10T

Abstract:
Apparatus for cutting a hole through an obstruction disposed within a hollow wall, the apparatus comprising:a guide tube having two ends, the guide tube adapted to flex in a direction transverse to an axis thereof; a work engaging head attached to the guide tube adjacent a first of the two ends, the work engaging head adapted to engage the obstruction, the work engaging head comprising a member having an axial throughhole therethrough; a lead screw having a collar operatively associated therewith, the collar having a diameter greater than a diameter of the axial throughhole, the lead screw adapted to be inserted through the throughhole and turned into the obstruction by a flexible shaft so as to draw the work engaging head into perpendicular contact with the obstruction; and a cutting tool adapted to cut the hole when the work engaging head is in perpendicular contact with the obstruction.