Patent ID: 6269966
Filing Date: 2001-08-07
Classification: A45C,B29C,B29K,B29L

Abstract:
In a blow-molded double-walled container and lid each having outer and inner resin walls separated to form respective interwall spaces filled with a pourable insulation material that sets to a solid state, the improvement comprising:a. a hinge between the body and the lid being formed of projections and mating recesses;b. the projections and recesses being formed integrally with the walls of the body and lid without penetrating the walls for hinge purposes to form any opening into either interwall space in a region of the hinge;c. the projections and recesses being dimensioned to allow the projections to be snap fit into the recesses when the recesses are still warm from blow molding; andd. the insulation material filling the interwall spaces of the body and lid rigidifying the snapped-together projections and recesses and preventing the projections from being unsnapped from the recesses.