Watertightness barrier for a wall of a tank
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United States of America Patent
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Mar 24, 2015
Grant Date -
Oct 3, 2013
app pub date -
Oct 21, 2011
filing date -
Dec 1, 2010
priority date (Note) -
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Abstract
A method of creating a watertightness barrier for a wall of a watertightened thermally insulating tank, involves steps of: arranging a repeating structure including alternately a strip of sheet metal and an elongate welding flange connected to the support surface, so that the turned-up lateral edges of the strip of sheet metal are positioned against the adjacent welding flanges, welding the turned-up lateral edge to the welding flange using a straight welded seam along a first longitudinal portion, continuing the straight welded seam with an end portion which is deviated in the direction of an upper edge corner, and producing a watertight edge corner welded seam along a second longitudinal portion of the strip of sheet metal such that the edge corner welded seam watertightly meets the end portion of the welded seam.
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