Patent ID: 6654996
Filing Date: 2003-12-02
Classification: B23D,B23P,F28F,Y10T

Abstract:
A tube remover for extracting a tube from an opening in which the tube is mounted in a wall, comprising:(a) a nipper roll, disposed for rotation about a first axis, having a radially outward facing surface and a plurality of teeth, oriented helically across an entire width of said nipper roll relative to said first axis, formed therein; (b) an anvil roll, disposed for rotation about a second axis, having a radially outward facing surface and a plurality of teeth, oriented helically across an entire width of said anvil roll relative to said second axis, formed therein, said anvil roll and said nipper roll having different diameters and spaced from each other at a distance such that, as said rolls are made to rotate in opposite directions, teeth formed in said nipper roll surface register with different teeth formed in said anvil roll surface on successive rotation of said rolls, wherein generally even distribution of wear occurs over said teeth formed in said outward facing surface of said nipper roll; and, (c) at least one anvil block formed in said radially outward facing surface of said anvil roll interrupting said teeth formed in said anvil roll surface.