Patent ID: 6974634
Filing Date: 2005-12-13
Classification: B32B,F01N,F16L,Y10T

Abstract:
1. A multi-layer tubing, comprising: a thermally conductive metal layer having a metallic surface, the metal layer having opposite first and second side edge portions; and a substantially thermally non-conductive, metallic felt layer having an outer felt layer surface attached to the metallic surface and an exposed inner felt layer surface, the metallic felt layer having opposite third and fourth side edge portions, the metal layer and the metallic felt layer collectively forming a laminate configured as a substantially cylindrical structure with the metallic felt layer positioned radially inward of the metal layers, wherein the first and second side edge portions of the metal layer overlap with and are coupled to one another at a coupling portion, and wherein at least one of the third and fourth side edge portions of the metallic felt layer is interposed between the first and second side edge portions within the coupling portion.