Patent ID: 7780065

Claim:
A device for clamping a plurality of pipes to each other, said device comprising (a) a rigid frame, (b) first and second clamping means supported on the frame for tightly engaging sides of respective first and second pipes having respective ends in line with and at a welding distance from each other, (c) movement means on the frame for moving the frame along the plurality of pipes, (d) means for operating the first clamping means, (e) means for determining an abutment position of the first clamping means, (f) means for storing data concerning the abutment position of the first clamping means in a memory, (g) means for operating the second clamping means, and (h) control means for controlling movement of the second clamping means to a position based upon the stored data concerning the abutment position of the first clamping means.