Patent ID: 7302972
Filing Date: 2007-12-04
Classification: F16L

Abstract:
1. A potable water supply line for insulating a flow of water in extreme weather conditions, said water supply line comprising: an outer tube formed from ductile material and having a cylindrical shape, said outer tube further having a centrally aligned longitudinal axis extending along an entire length thereof; an inner tube concentrically spaced about the axis of said outer tube, said inner tube having a longitudinal length coextensively sized with the longitudinal length of said outer tube, said inner tube having a diameter suitably sized and shaped such that said inner tube is equidistantly spaced inward from said outer tube and defines a cavity intercalated between said inner and outer tubes such that said inner and outer tubes can maintain a fixed spatial relationship while said outer tube is maintained at a linear shape; a plurality of linear fingers intercalated between said inner and outer tubes and seated within the cavity, said fingers radially extending outward from said inner tube and equidistantly spaced along an outer perimeter of said inner tube and positioned along the entire longitudinal length of said inner and outer tubes; wherein said fingers define a plurality of isolated air chambers which act as a thermal blanket, said isolated air chambers preventing undesirable cold ambient air from passing into said inner tube and further preventing desirable hot air from exiting out of said inner tube during operating conditions; and a coupling provided with an axial bore, said coupling being directly conjoinable with said water supply line, said coupling being in fluid communication with said inner tube and conjoinable therewith for allowing the operator to mate said water supply line with an auxiliary line; wherein said coupling has an outer surface provided with a plurality of monolithically formed barbs suitably sized and shaped such that said coupling can be thermally and permanently connected directly to said inner tube by heating said coupling and said water supply line to a predetermined temperature; wherein said coupling comprises an outwardly flanging shoulder concentrically spaced about a medial portion of said coupling such that said coupling has coextensively shaped proximal and distal ends axially extending away from said shoulder and defining an entire longitudinal length of said axial bore.