Patent ID: 6253440
Filing Date: 2001-07-03
Classification: B21D,Y10T

Abstract:
A method of manufacturing a self cooling beverage container comprising the steps of:a. providing a beverage can having an open top and a closed bottom;b. removing a predetermined amount of material centrally from said bottom of said can to provide an opening therethrough;c. forming a flange having an inner and outer diameter and extending substantially perpendicular with respect to said bottom from material of said can bottom immediately surrounding said opening;d. providing a separate heat exchange unit;e. providing a separate valve cup carrying a valve:f. positioning said heat exchange unit completely within the beverage can and adjacent one of said inner and outer diameters of said flange;g. positioning said valve cup outside the beverage can and adjacent the other of said inner and outer diameters of said flange; andh. permanently affixing said flange to said heat exchange unit and said valve cup.