US H2,139 H1
Active heating system for oil pipeline
Alexander Fraser Moore, Windsor (United Kingdom)
Assigned to Coflexip, Paris (France)
Filed on Nov. 08, 2000, as Appl. No. 9/708,136.
Claims priority of provisional application 60/163928, filed on Nov. 08, 1999.
Int. Cl. F28D 7/10 (2006.01)
U.S. Cl. 165—154 9 Claims
OG exemplary drawing
 
1. An active heating system for a pipeline, comprising:
an elongate pipeline with an interior for carrying a substance to be heated;
a tube having a smaller cross section than the pipeline and passing through the interior of the pipeline for the tube to be in thermal communication with the substance in the pipeline so that heated substance passing through the tube will heat the pipeline and the material in the pipeline.