Internal pipe clamp alignment guides with purge backup

Details Internal pipe clamp alignment guides with purge backup Internal pipe clamp alignment guides with purge backup

2009-08-04

2010-10-12

Stoner, Kiley (Department: 1793)

Metal fusion bonding

Including means to force or clamp work portions together...

Comprising tube aligning means

C228S049300

Reexamination Certificate

active

07810696

ABSTRACT:
This invention relates to an apparatus for clamping adjacent ends of pipe sections to be welded, the apparatus comprising a plurality of clamping members movable between retracted and extended clamping positions, each of the clamping members comprising a clamping shoe and a connecting member connecting the shoe to the apparatus frame; each of the clamping shoes comprising a longitudinal groove on its clamping surface oriented parallel to the adjacent pipe ends, at least one gas passageway through the clamping shoe which extends from a surface of the shoe away from the clamping surface to a termination point within the longitudinal groove, and at least one alignment guide device in the longitudinal groove; a means for delivering an inert purge gas to the longitudinal groove through the gas passageway; and a means for moving the clamping members between the retracted and extended clamping positions.

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