Apparatus and method for joining pipe ends together

Details Apparatus and method for joining pipe ends together Apparatus and method for joining pipe ends together

2003-03-28

2010-06-15

Ward, Jessica L. (Department: 1793)

Metal fusion bonding

With means to handle work or product

C228S049300, C228S103000, C219S059100, C219S06000A, C219S061000, C219S06000A, C219S061300

Reexamination Certificate

active

07735709

ABSTRACT:
A method and apparatus for joining pipe sections (102, 104) together to form an underwater pipeline. The pipe sections (102, 104) are in an abutting position and have a generally vertical orientation. The apparatus comprises at least two welding equipment carriers (148, 152) and at least two welding heads (110, 112). Each welding head is connected to an equipment carrier (148, 152) by means of at least one umbilical (130, 132). The apparatus further comprises a welding head guide assembly (113) which is adapted to be fixed to one of said upper of lower pipe sections. The welding head guide assembly (113) guides the welding heads about the pipe sections (102, 104). The apparatus further comprises a guiding device (133) which guides the welding equipment carriers (148, 152) around said welding area (115). The welding equipment carriers (148, 152) are movable independently from one another.

REFERENCES:
patent: 263132 (1882-08-01), Edison
patent: 3890482 (1975-06-01), Dibenedetto
patent: 4373125 (1983-02-01), Kazlauskas
patent: 6313426 (2001-11-01), Belloni et al.
patent: 1249295 (2002-10-01), None
patent: 2223127 (1974-10-01), None

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