Patent ID: 6029651
Filing Date: 2000-02-29
Classification: A47J,F28D,Y02E

Abstract:
A new and improved hot cup system adapted to retain fluid contents heated for extended periods of time comprising, in combination:a generally cylindrical exterior member, the exterior member having a cylindrical side wall and with an open upper end and an open lower end, the exterior member being injection molded from a thermally insulating elastomeric material, preferably high density polyethylene;a generally cylindrical interior member, the interior member having a cylindrical side wall with an open upper end and a lower end with a generally planar circular lower portion formed with two laterally spaced downwardly extending parallel projections, the interior member being fabricated of a thermally conductive metallic material, preferably stainless steel;a circular base with an essentially hemispherical central section extending downwardly therefrom with a cylindrical extension projecting upwardly therefrom, the base being fabricated of a resilient clear elastomeric material, preferably polyethylene, with the base having a periphery with a sonic weld or spin weld coupled to the interior surface of the exterior member adjacent to the lower end thereof;a chamber formed between the interior member and exterior member and base;a heat generating fluid, preferably sodium acetate, located within the chamber; anda generally hemispherically shaped trigger formed of a flexible metallic material, preferably aluminum, located between the central section of the base and the parallel projections and with upwardly extending ribs which when flexed will activate the fluid to generate heat.