Patent ID: 7294222

Claim:
A pipe fusion machine for fusing sections of pipe to form a pipeline, comprising: (a) a fusing mechanism; and (b) a cleaning mechanism for cleaning debris from the external surface of the sections of pipe prior to fusion of the same, said cleaning mechanism comprising: a first discus plate having, with respect to said cleaning mechanism, an interior surface, a second discus plate having, with respect to said cleaning mechanism, an interior surface, a flexible discus wiper having planar surfaces, wherein the interior surfaces of said first and second discus plates and the planar surfaces of said flexible discus wiper are in a parallel configuration, and a plurality of independent spacers removably affixed to the interior surface of said first discus plate and the interior surface of said second discus plate, said spacers connecting and separating said discus plates, and being sized and positioned to allow said flexible discus wiper to be held between said interior surfaces of said discus plates.