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A vent assembly for the top panel of a seal for a food container including a vent hole in the seal panel at least partially surrounded by an upwardly opening recess with the vent hole and recess being below the upper surface of the seal panel. A vent cover, including a depending plug selectively rec

A vent assembly for the top panel of a seal for a food container including a vent hole in the seal panel at least partially surrounded by an upwardly opening recess with the vent hole and recess being below the upper surface of the seal panel. A vent cover, including a depending plug selectively receivable in the vent hole, is pivotally mounted by a hinge assembly which included a hinge pin on said cover received within spaced trunnion openings in the recess adjacent the vent hole. The trunnion openings are laterally enlarged relative to the pin diameter and of a generally non-symmetric oval configuration.

대표청구항 ▼

[ We claim:] [1.] A vent assembly for a storage container, said container including a seal, said seal having a portion thereof defining a substantially planar panel, said panel having an outer face and an inner face; said vent assembly including an integral portion of said panel depressed inwardly r

[ We claim:] [1.] A vent assembly for a storage container, said container including a seal, said seal having a portion thereof defining a substantially planar panel, said panel having an outer face and an inner face; said vent assembly including an integral portion of said panel depressed inwardly relative to said outer face and defining an outwardly opening recess, said recess having a bottom, a first hinge component on said recess bottom extending across a substantial portion thereof and defining first and second generally equal size sections in said recess to opposite sides of said first hinge component, a vent hole defined through said bottom in said first section, a vent cover overlying said recess and including a depending vent plug selectively engaged within and closing said vent hole in a closed position of said vent cover, said vent cover in said closed position, being in a substantially common plane with said panel about said recess, said vent cover including a depending second hinge component engaged with said first hinge component for relative rotation of said cover between said closed position wherein the vent plug is received within the vent hole, and an open position wherein the vent plug is outwardly retracted from said vent hole, said first and second hinge components, in said closed position of said vent cover, being laterally moveable relative to each other and selectively toward and away from said vent hole, while maintaining an engaged relationship of said vent plug with said vent hole, wherein differential expansion and contraction between said cover and said panel is accommodated with the plug maintained within the vent hole and the cover maintained generally coplanar with the panel surrounding the recess, said first hinge component comprising a trunnion structure, said second hinge component comprising a cylindrical hinge pin of predetermined diameter, openings defined by said trunnion structure for rotatable reception of said hinge pin, said openings, in transverse section, being elongate and allowing for lateral adjustment of said hinge pin within said openings in response to both differential expansion and differential contraction of said cover relative to said panel, said trunnion structure comprises two spaced trunnions, said openings comprising a pair of duplicate openings, one in each of said trunnions, each trunnion including two laterally spaced sectors, each sector having an arcuate seat therein, the two seats of each trunnion being inwardly directed toward each other and defining the corresponding opening, the seats of each trunnion sector are of different arcs and form a smaller seat closely conforming to and rotatably receiving the hinge pin, and a larger seat which allows for relative movement between the hinge pin and the openings.