Patent Number: 6,309,145

Title: Portable machine tool for conditioning header tube openings for butt-welding tubes

Abstract: A portable machine tool for removing stub ends of heat exchange tubes from a heat exchanger header or other plate structure and preparing the tube opening in the header for butt-welding a new tube at the opening. The tool includes a mandrel that may be locked within the tube opening and a plurality of stabilizing legs extending between the mandrel and the header for stabilizing the mandrel during machine tool operation. A cutting head is mounted concentrically on the mandrel and is advanced into engagement with the stub end of a heat exchange tube and it's respective opening to remove the stub end and prepare the opening for welding the new tube thereon.

Inventors: Tremblay; Clement (Citrus Heights, CA), VanderPol; Jerald (Shingle Springs, CA)

Assignee: Tri Tool Inc.

International Classification: B23B 5/16 (20060101); B23B 41/00 (20060101); B23B 5/00 (20060101); B23B 041/00 (); B23B 035/00 ()

Expiration Date: 10/30/2018