| 20090113645 | METHOD OF COUPLING PIPELINE PIGS TO FORM AN ARTICULATED PIPELINE PIG ASSEMBLY - A method of coupling pipeline pigs to form an articulated pipeline pig assembly. A first step involves providing more than one pipeline pig, the more than one pipeline pig having couplers which couple upon impact and allow for limited articulation upon coupling. A second step involves launching each pipeline pig individually into a carrier pipe. A third step involves bringing the more than one pipeline pig into contact within the carrier pipe after launching to cause the couplers on each pipeline pig to couple with another pipeline pig upon impact, thereby forming an articulated pipeline pig assembly of more than one pipeline pig. | 05-07-2009 |
