Patent ID: 7316069
Filing Date: 2008-01-08
Classification: B23D,B26D

Abstract:
1. A pipe wall support tool for supporting a pipe wall during cutting, comprising: a one piece cylinder having a first portion with a first diameter and a second portion with a second diameter; said first diameter corresponding to an inside diameter of a first size of pipe; said second diameter corresponding to an inside diameter of a second size of pipe; a first annular groove in said first portion and a second annular groove in said second portion; said first and second annular grooves being dimensioned to receive a cutting blade during cutting such that the pipe wall is cut through entirely without contact between the cutting blade and the pipe wall support tool; and said first and second portions being dimensioned relative to said first and second annular grooves such that said first and second portions maintain supporting contact with the pipe sufficient to resist deformation of the pipe during cutting of the pipe; and a calibration scale comprised of a series of hash marks positioned to indicate the distance from the annular groove to the end of the pipe, said hash marks progressing axially along each of said first and second portions.