Pipe cutting apparatus

Details Pipe cutting apparatus Pipe cutting apparatus

1998-08-11

2000-04-18

Paschall, Mark

Electric heating

Metal heating

By arc

21912148, 21912154, 219 60A, 219 591, 266 55, 266 57, 266 76, 266 77, B23K 1000

Patent

active

060518030

ABSTRACT:
Plasma arc cutter apparatus for cutting large diameter pipe from within the pipe, a frame with adjustable legs, a locking device to secure the apparatus within the pipe, apparatus to adjust the spacing between the plasma arc and the inside wall of the pipe during cutting, a drive shaft to rotate the cutter apparatus around the circumference of the pipe during cutting, controls to change the elevation of the drive shaft to vary the angle of cut, and adjustment devices to center the drive shaft within the pipe.

REFERENCES:
patent: 1692924 (1928-11-01), Brown
patent: 2795689 (1957-06-01), McNutt
patent: 3711076 (1973-01-01), Goetz
patent: 4162383 (1979-07-01), Hamasake
patent: 4667936 (1987-05-01), Hale, Jr.
patent: 5006687 (1991-04-01), Fujita et al.

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