Patent ID: 6085664
Filing Date: 2000-07-11
Classification: B61D,B65D

Abstract:
A vented hatch cover for a container having an opening defining a hatch, said cover comprising:a first outer shell member and a second inner shell member sized to fit over and enclose a hatch opening and being bonded together in a spaced relationship at a flange structure extending outwardly from a periphery of said shell members;said flange structure including an inner portion covered by said outer shell and an outer bonded portion;air venting means formed in said cover for allowing air flow from a container's exterior into a container, said air venting means including at least one air inlet port in said inner portion of said flange structure, at least one air inlet port in said inner shell and an air chamber formed between said inner and outer shells;reinforcement members spaced apart and fixedly mounted between said shells in a radial pattern to allow air flow therebetween.