Apparatus for effecting boiler tube removal

Details Apparatus for effecting boiler tube removal Apparatus for effecting boiler tube removal

1997-09-22

1999-04-13

Cuda, Irene

Metal working

Means to assemble or disassemble

Heat exchanger

29 33G, 29890031, B23D 1526

Patent

active

058932097

ABSTRACT:
A gap-cutter tool assembly for machining a longitudinal gap in an installed boiler tube is provided with clamp elements that engage the interior surface of the installed boiler tube, a cutter head track that provides a straight line cutting path within the tube interior and in the presence of different tube interior diameters, and a cutter head that co-operates with the cutter head track and that has different elevational positions during the cutter head cutting and return strokes, and at the end of the cutter head return stroke.

REFERENCES:
patent: 4633555 (1987-01-01), Legge
patent: 4830551 (1989-05-01), Brennan et al.
patent: 4979294 (1990-12-01), Bowman et al.
patent: 5033347 (1991-07-01), Hillestad et al.
patent: 5044075 (1991-09-01), Brennan et al.
patent: 5356248 (1994-10-01), Hillestad
patent: 5626445 (1997-05-01), Nachbar et al.

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