Refrigerator door assembly and method

DETAILED DESCRIPTION An object of this invention is to overcome the above, briefly described problems encountered with conventional door assemblies for refrigeration units by providing an economical refrigerator door assembly that exhibits a high degree of structural integrity and efficiency when placed in operation.
In one aspect of this invention, the refrigerator door assembly comprises a door frame and vertically aligned upper and lower hinge pins integrally molded within the door frame for mounting the door assembly for pivotal movement about a common pivot axis on a stationary frame of a refrigeration unit.
In another aspect of this invention, a torsion bar is molded as an integral part of the door frame and functions to constantly apply a closing force on the door assembly.
In still another aspect of this invention, a symmetrical assembly comprising hinge pin sockets and a sheath which allows a torsion bar to rotate in it are incorporated in the door and allows the door to be assembled for either right or left swing at the installation site.
In still another aspect of this invention, a method for making the refrigerator door assembly is taught which includes injecting a liquified thermo plastic or thermo-setting plastic material into a mold cavity to form the door frame and curing and hardening the plastic material to form a structurally integrated refrigerator door assembly.