Thermally insulated holder for a single beverage can

Claim 1

A thermally insulated holder for a single beverage-containing can comprising: (a) two identical holding jackets, each being an integral monolithic structure fabricated of closed cell foam of a resilient polymeric material and having a cylindrical sidewall, a substantially flat bottom closure wall, an open upper extremity defined by a flat circular end face disposed in a plane perpendicular to the axis of said sidewall, and a series of equally spaced grooves within the interior surface of said sidewall in parallel disposition to said axis and terminating in said open upper extremity, and (b) two identical refrigerant containers, each comprised of a thin-walled can having a flat bottom, a cylindrical sidewall adapted to fit snugly within the sidewall of said jacket, and a flat closure lid, the height of the refrigerant container, measured along the axis of its sidewall being between about 30% and 40% of the interior height of the jacket, measured along the axis of the sidewall of the jacket, the ratio of height/diameter of said can being in the range of about 0.5 and 0.8, (c) each refrigerant container residing in abutment with the bottom closure of each jacket, whereby (d) when the two jackets are brought together about a beverage can, the can makes close-fitting contact with the interior surfaces of the sidewalls of the jacket, the top and bottom of the can contact the refrigerant containers, and the flat circular end faces of the jackets are in abutment.