Patent ID: 8376208
Filing Date: 2013-02-19
Classification: B23K,F16L

Abstract:
1. A purge plug for sealing a tubing for welding applications, comprising: a tubular body having a proximal end and a distal end; a plurality of sealing members disposed annularly around the tubular body and extending outwardly therefrom, each of said sealing members having a diameter that is greater than the diameter of the tubing, each of said sealing members is sufficiently resilient and capable of decompressing mechanically to cover a space between the tubular body and inner walls of the tubing such that an edge portion of the sealing member bends and mechanically expands and pushes against the inner walls of the tubing so as to seal the opening between the tubular body and the inner walls of the tubing so that purge gas in the space cannot pass through the sealing members, wherein said sealing members are each configured with a different thickness of between about 0.51 cm to about 1 cm; a connector disposed on the proximal end of the tubular body, said connector is pivotable and adapted to connect to a gas line; and a diffuser disposed on the distal end of the tubular body.