Expandable tool for holding aligning pipes to be welded

Details Expandable tool for holding aligning pipes to be welded Expandable tool for holding aligning pipes to be welded

1995-01-10

1996-07-23

Heinrich, Samuel M.

Metal fusion bonding

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

Comprising tube aligning means

228212, 219 611, B23K 37053

Patent

active

055381731

ABSTRACT:
An expandable tool for holding and aligning pipes to be welded together is disclosed. The tool includes an annual array of radially movable gripping elements for engagement with the interior wall of the pipes to be welded. A wedge is mounted for axial movement relative to the gripping elements to effect selective radial outward movement of the gripping elements to align and hold the pipes for welding. The gripping elements are provided with passageways for delivery gas to preselected zones between the gripping elements and the interior wall surfaces of the pipes in the regions to be welded.

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Tube-a-Liner.TM. . . . from Dearman!, Cogsdill Tool Products, Inc., Flyer No. D943A, no date.

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