B - Operations – Transporting – 23 – D
Patent
B - Operations, Transporting
23
D
B23D 21/14 (2006.01) B21C 37/12 (2006.01) B23D 21/02 (2006.01) B23D 21/08 (2006.01) B26D 3/00 (2006.01) F16L 55/165 (2006.01)
Patent
CA 2364666
A cutting apparatus is adapted to cut corrugated metal pipe or thin walled pipe regardless of the pipe's concentricity and structural integrity as all required forces are offset internally within the cutting tool. A series of cutting wheels, stepped in stages, are mounted in an opening of a frame which fits over a portion of the pipe wall. The frame is drawn through the pipe to allow the cutting wheels to cut a specific longitudinal portion of the pipe without relying on or touching other portions of the pipe, thus eliminating the pipe's size and total structural integrity as prereqisites for using the device on the pipe. Slots on the wheels help rotate the wheels as the frame moves along the pipe. A guide provides the frame with an area of contact with the pipe wall to allow the cutter apparatus to follow the pipe wall regardless of the pipe's shape. A leading edge of the frame is hardened and sharpened to shear any exterior bolts or bonding used on the pipe. A sharpened, hardened ripper behind the cutter wheels ensures any uncut metal is severed. For mobility, the cutter head is attached to a traveling link, connected to a pull string, which allows the head to follow along the pipe wall independently of any irregularities. A chassis attached to the pull string is adjustable for different diameter pipes to allow for alignment of the cutter apparatus with the pipe wall. An expanding head travels behind the cutting apparatus to spread the cut pipe and make room for a new replacement pipe to be drawn through. The head may have elongate ribs to avoid crinkling of the pipe as it is being spread. One or more cutting tools may be employed to provide a corresponding number of longitudinal cuts through the pipe.
Malyszko Thomas E.
Trenchless Replacement Systems Corp.
LandOfFree
Improved method and apparatus for cutting and splitting pipe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Improved method and apparatus for cutting and splitting pipe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved method and apparatus for cutting and splitting pipe will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2063265