Telescoping boom supported flip-flop service line

Claim 1

A boom-supported articulated pipeline for use with a telescoping boom assembly having a plurality of boom sections, said pipeline having a reduced number of pipe lengths to decrease cost and weight while retaining the required length, said pipeline comprising: an inboard pipe mounted on said boom assembly generally parallel to an inboard boom section and attached to said inboard boom section; an outboard pipe mounted on said boom assembly generally parallel to said boom assembly and movable along the full length of said boom assembly; first, second and third intermediate pipe sections connected end-to-end through a pair of swivel joints; means for pivotally connecting said intermediate pipe sections between an outer end of said inboard pipe and an inner end of said outboard pipe through respective swivel joints at said outer and inner ends; and means for flip-flopping each of said intermediate pipe sections to reverse their direction of alignment so that one end of each of said intermediate pipe sections extends in a direction inwardly from said outer end of said inboard pipe when said pipeline is in a retracted position, and said one end of each of said intermediate pipe sections extends in a direction outwardly from said outer end from said inboard pipe when said pipeline is in an extended position and, one end of each of said inboard pipe and said outboard pipe extend outwardly from the inner end of said inboard pipe and in the same direction as each said one end of each said intermediate pipe sections when said pipeline is in extended position, and, said one end of each of said inboard and outboard pipes also extend in the same said outward direction when said pipeline is in retracted position, while each said one end of said intermediate pipes extend inwardly in said retracted position.