Patent ID: 9061779
Filing Date: 2015-06-23
Classification: B23K,B65B

Abstract:
1. A method for sealing steel strap to itself under tension, in an end-to-end weld, the steel strap having a lead end and a loop end comprising: securing the strap at locations adjacent to the lead end and the loop end to define a gap between the lead end and the loop end; drawing the lead end and the loop end toward one another for a distance; moving the loop end longitudinally toward the lead end slowly in a first portion of the distance. passing a current through one or both of the lead end and the loop end as the lead and loop ends are drawn longitudinally toward one another in the first portion of the distance; turning off a weld transformer and moving the loop end longitudinally toward the lead end quickly in a second portion of the distance; contacting the lead end and the loop end with one another to fuse the lead end and the loop end in an end-to-end weld; and releasing the strap.