초록 ▼

The insulated door for refrigerators, freezers or similar cabinets where the inner and outer door surfaces are normally subjected to substantially different temperatures. This device has an outer panel with two sides formed by folding up two opposing edges out of its four edges. Two end sections fit

The insulated door for refrigerators, freezers or similar cabinets where the inner and outer door surfaces are normally subjected to substantially different temperatures. This device has an outer panel with two sides formed by folding up two opposing edges out of its four edges. Two end sections fit on the other two opposing edges of the outer panel in such a way as to close off the above-mentioned two sides. An inner panel is disposed parallel to the outer panel so that its four edges are positioned inside the above-mentioned two sides and two end sections. Insulated material is packed between the said outer and inner panels. The end sections are provided with a first projecting rib and second projecting ribs which grip from both sides in the thickness direction, the edges of the inner panel which are positioned inside the end section. Either protruding or recessed interlocking parts are formed on the first or second ribs, and the corresponding other interlocking parts are formed on the ends of the inner panel. The inner panel and the two end sections are joined by fitting together the protruding and recessed interlocking parts.

대표청구항 ▼

An insulated door comprising: an outer panel including first and second edges opposing one another and third and fourth edges opposing one another, said first and second edges folded to form first and second sides, respectively, said first and second sides each including a portion extending from sai

An insulated door comprising: an outer panel including first and second edges opposing one another and third and fourth edges opposing one another, said first and second edges folded to form first and second sides, respectively, said first and second sides each including a portion extending from said outer panel, said first and second sides further including first and second return flanges, respectively, extending from said extending portions, said first and second return flanges each defining an inner surface facing and spaced a preset distance from said outer panel; first and second end sections fitted to the third and fourth opposing edges of the outer panel; an inner panel placed in relation to the outer panel so that first and second opposing inner panel edges are positioned inside the first and second sides of the outer panel in contact with said return flange inner surfaces and third and fourth opposing inner panel edges are positioned within the first and second end sections, said inner and outer panels defining a main cavity therebetween, said inner panel including means defining a first arcuate lip in proximity to said inner panel first edge, an outer surface of said first lip contacting said first return flange inner surface along a first contact line, a first subsidiary cavity in communication with said main cavity being defined by the arcuate inner surface of said lip on the side of said first lip opposite said first contact line; plural sets of first and second projection rib means, at least one set disposed in each of the end sections, for gripping the third and fourth edges of the inner panel which are positioned inside the end sections, said first and second rib means opposing one another and gripping an inner panel edge from opposite sides of said inner panel; and insulating material disposed within said main cavity and said first subsidiary cavity.