Electric heating – Metal heating – By arc
Patent
1997-05-14
1999-01-26
Evans, Geoffrey S.
Electric heating
Metal heating
By arc
B23K 2600
Patent
active
058641130
ABSTRACT:
A cutting unit for pipes which includes a laser beam which is reflected by a series of mirrors positioned adjacent the circumference of a pipe and wherein the mirrors are mounted on the ends of movable arms pivotally connected to one another and wherein one of the arms rotates around a pipe to be cut and the other arm serves as an optical and mechanical connection between a laser source and the arm which rotates.
REFERENCES:
patent: 4533814 (1985-08-01), Ward
patent: 4609807 (1986-09-01), Morrissy et al.
patent: 4638143 (1987-01-01), Akeel
patent: 4675499 (1987-06-01), Nakai
patent: 4728773 (1988-03-01), Roberts et al.
patent: 4742206 (1988-05-01), Dietterich et al.
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