Electric heating – Metal heating – By arc
Patent
1975-04-11
1977-01-04
Truhe, J. V.
Electric heating
Metal heating
By arc
61111, 29200P, 350 7, B23K 2600
Patent
active
040015432
ABSTRACT:
Apparatus which may be mounted upon a lay barge to weld an end of a pipe spool to an end of a pipeline used under water, includes a stand fixed to the pipeline to support and secure its outer end, a pipe spool support which may hold a spool in coaxial relationship with the pipeline and with one end abutting the outer end of the pipeline, a laser positioned to direct a beam of coherent radiation along the axis of the pipeline, a reflection system including a mirror mounted for movement through an arc of 360.degree. in the path of the laser beam to reflect that beam radially on the abutting ends of the pipeline and pipe spool, and a laser energy source for generating a beam of sufficient intensity to weld together the abutting ends of the pipeline and the pipe spool.
REFERENCES:
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patent: 3324275 (1967-06-01), Peignen
patent: 3387761 (1968-06-01), Pickard
patent: 3454740 (1969-07-01), Foulquier et al.
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patent: 3618845 (1971-11-01), Totten
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patent: 3772753 (1973-11-01), Sargeant
patent: 3839775 (1974-10-01), Hirose et al.
Bove Ottavio
Grossi Galeazzo
Kirkley David William
BOC Limited
Peterson G. R.
Saipem S.p.A.
Truhe J. V.
Watson Ralph M.
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