A frozen food package having an easily removable and replaceable dome lid for permitting reconstitution of the frozen food either in a conventional or a microwave oven. The dome lid has an annular seating flange overlapping and disengageably locked onto the rim of a rigid bottom tray by locking ribs
A frozen food package having an easily removable and replaceable dome lid for permitting reconstitution of the frozen food either in a conventional or a microwave oven. The dome lid has an annular seating flange overlapping and disengageably locked onto the rim of a rigid bottom tray by locking ribs spaced around the flange and engaged under the tray rim. A thumb notch recess is so located in the dome lid seating flange as to permit direct engagement therethrough of the tray rim by a person\s thumb along with simultaneous engagement by the fingers on the same hand with the dome lid flange at the region of an adjacent locking rib thereon. A positive separating force thereby can be applied to the tray and lid to quickly and easily unlock and separate them from one another without damage to either.
대표청구항▼
In a container comprised of a molded rigid plastic bottom tray with a surrounding laterally outward extending flanged rim of generally rectangular contour with gradually rounded corner portions, and an upper dome lid comprised of a semi-rigid sheet-like member of plastic material having a laterally
In a container comprised of a molded rigid plastic bottom tray with a surrounding laterally outward extending flanged rim of generally rectangular contour with gradually rounded corner portions, and an upper dome lid comprised of a semi-rigid sheet-like member of plastic material having a laterally outward extending annular seating flange matching the contour of, and seated against the upper surface of and locked onto the said rim of the tray, to join the tray and dome lid together into a unitary assembly, the said seating flange having a depending locking flange closely fitting around the flanged rim of the tray and having gradually rounded corner portions matching the said rounded corner portions of said flanged rim, and the said locking flange being provided with a plurality of inwardly projecting locking rib means spaced therearound and engaged with the tray rim under the peripheral outer edge thereof to lock the dome lid in place on the tray, the improvement comprising: said locking rib means being located within the peripheral extent of respective ones of the said rounded corner portions of said locking flange, and said seating flange having an outwardly opening thumb notch recess in the outer peripheral edge thereof exposing a portion of the said tray rim through said recess, said thumb notch recess being spaced around the said seating flange a distance, from one of said locking rib means, such as to enable engagement through said thumb recess of the said flanged rim of the tray by the thumb of a person\s hand while at the same time enabling engagement of the fingers of the person\s same hand with the underside of the said locking flange of the dome lid, at a region outwardly adjacent the said one locking rib means, for application of a separating force couple directily and normal to the flanged rim of the tray and the said locking flange to disengage the said one locking rib means from the tray rim. A dome lid for locking attachment onto a bottom tray having a surrounding laterally outward extending flanged rim of generally rectangular contour with gradually rounded corner portions, said lid comprising a semi-rigid sheet-like member of plastic material having a laterally outward extending annular seating flange matching the contour of and adapted for seating against the upper surface of and locking onto the said rim of the tray, said seating flange having a depending locking flange for fitting closely around the flanged rim of the tray and having gradually rounded corner portions matching the said rounded corner portions of said flanged rim, said locking flange being provided with a plurality of inwardly projecting locking rib means spaced therearound and located within the peripheral extent of respective ones of the said rounded corner portions of said locking flange for engagement with the tray rim under the peripheral outer edge thereof to lock the dome lid in place on the tray, and said seating flange having an outwardly opening thumb notch recess in the outer peripheral edge thereof for exposing therethrough a portion of the tray rim, said thumb notch recess being spaced around the said seating flange a distance, from one of said locking rib means, such as to enable engagement through said thumb notch recess of the flanged rim of the tray by the thumb on a person\s hand while enabling simultaneous engagement of the fingers on the same hand with the underside of said locking flange, at a region outwardly adjacent the said one locking rib means, for application of a separating force couple directly and normal to the flanged rim of the tray and said locking flange to disengage the said one locking rib means from the tray rim In a container comprised of a molded rigid plastic bottom tray with a surrounding laterally outward extending flanged rim and an upper dome lid comprised of a semi-rigid sheet-like member of plastic material having a laterally outward extending seating flange matching the contour of, and seated against the upper surface of and locked onto the said rim of the tray, to join the tray and dome lid together into a unitary assembly, the said seating flange having a depending locking flange closely fitting around the flanged rim of the tray and the said locking flange being provided with a plurality of inwardly projecting locking rib means spaced therearound and engaged with the tray rim under the peripheral outer edge thereof to lock the dome lid in place on the tray, the improvement comprising: said seating flange having an outwardly opening thumb notch recess in the outer peripheral edge thereof exposing a portion of the said tray rim through said recess, said thumb notch recess being spaced, around the said seating flange a distance, from one of said locking rib means, such as to enable engagement through said thumb recess of said flanged rim of the tray by the thumb of a person\s hand while at the same time enabling engagement of a finger of the person\s same hand with the underside of the said locking flange of the dome lid vertically beneath the said one locking rib means for application of a separating force coupled directly and normal to the flanged rim of the tray and the said locking flange to disengage the said one locking rib means from the tray rim. A dome lid for locking attachment onto a bottom tray having a surrounding laterally outward extending flanged rim, said lid comprising a semi-rigid sheet-like member of plastic material having a laterally outward extending seating flange matching the contour of and adapted for seating against the upper surface of and locking onto the said rim of the tray, said seating flange having a depending locking flange for fitting closely around the flanged rim of the tray, said locking flange being provided with a plurality of inwardly projecting locking rib means spaced therearound for engagement with the tray rim under the peripheral outer edge thereof to lock the dome lid in place on the tray, and said seating flange having an outwardly opening thumb notch recess in the outer peripheral edge thereof for exposing therethrough a portion of the tray rim, said thumb notch recess being spaced around the said seating flange a distance, from one of said locking rib means, such as to enable engagement through said thumb notch recess of the flanged rim of the tray by the thumb on a person\s hand while enabling simultaneous engagement of a finger on the same hand with the underside of said locking flange, vertically beneath the said one locking rib means for application of a separating force coupled directly and normal to the flanged rim of the tray and said locking flange to disengage the said one locking rib means from the tray rim.
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