초록 ▼

This method involves the injection molding of a polymeric/copolymeric frame about a peripheral edge of glass panel in association with a pair of brackets to form a refrigerator shelf. The glass panel is placed in a cavity of a mold with a peripheral edge of the cavity corresponding to a peripheral e

This method involves the injection molding of a polymeric/copolymeric frame about a peripheral edge of glass panel in association with a pair of brackets to form a refrigerator shelf. The glass panel is placed in a cavity of a mold with a peripheral edge of the cavity corresponding to a peripheral edge of the glass panel. The cavity has side cavity portions each housing one of the shelf brackets. Polymeric/copolymeric synthetic plastic material is injected into the cavity preferably adjacent corners thereof such that the forces of the injected material are essentially self-balancing about the peripheral edge of the glass panel, thereby maintaining the glass panel in substantially mating conformity with the cavity to produce a relatively consistently contoured and cross-sectioned frame which, upon the solidification of the plastic material, also unites the shelf brackets to the glass panel.

대표청구항 ▼

[ What is claimed is:] [1.] A method of forming a shelf including a generally flat polygonal support, a pair of shelf brackets and a peripheral border at least along portions of which the brackets are united to the flat support comprising the steps of providing a mold having a cavity including a pol

[ What is claimed is:] [1.] A method of forming a shelf including a generally flat polygonal support, a pair of shelf brackets and a peripheral border at least along portions of which the brackets are united to the flat support comprising the steps of providing a mold having a cavity including a polygonal peripheral cavity portion corresponding substantially to a peripheral edge portion of the flat polygonal support and generally parallel laterally spaced cavity portions each merging with the polygonal peripheral cavity portion, placing the flat polygonal support in the cavity with its peripheral edge portion located in the polygonal peripheral cavity portion, placing one shelf bracket in each lateral cavity portion with an upper edge of each shelf bracket being adjacent the flat polygonal support peripheral edge, introducing material under pressure into the polygonal peripheral cavity portion at a plurality of peripherally spaced positions and applying forces created by the introduced pressurized material against the peripheral edge portion of the flat polygonal support and maintaining the flat polygonal support substantially in mating conformity with the polygonal peripheral cavity portion by the introduced pressurized material whereby a relatively consistently contoured border is formed about the peripheral edge portion of the flat polygonal support, the pressurized material introduced into the polygonal peripheral cavity portion also enters the lateral cavity portions and at least partially encapsulates the shelf brackets, and effecting the solidification of the material to form a peripheral shelf border unitizing the flat polygonal peripheral support and the shelf brackets.