Food service container and lid

A unitary paperboard lid for a rimmed receptacle comprising:

• a cover panel whose outer dimensions are at least equal to the outer dimensions of the top of the receptacle;
• a pair of extension tabs formed at opposite edges of the cover panel;
• an outer wall panel foldably connected to each extension tab and downwardly depending therefrom;
• means in each outer wall panel defining a semi-detachable retaining tongue;
• a bottom wall panel foldably connected to each outer wall panel and extending inwardly therefrom;
• an inner wall panel foldably connected to each bottom wall panel and extending upwardly therefrom in a substantially parallel relation to one of the outer wall panels;
• a glue flap foldably connected to each inner wall panel, and secured in underlying relation to each extension tab;
• and,
• a slot formed at the junction of each inner wall panel with the adjacent glue flap, and having a length less than the length of the junction;
• wherein the lid is lockable to the receptacle by engaging the rim of the receptacle in the slots, and detaching the retaining tongues from the outer wall panels to engage the portions of the rim protruding through the slots, whereby the retaining tongues exert outward and upward biases on the rim which lock the lid to the receptacle.

A container comprising a receptacle and a separate locking lid,

• the receptacle comprising
• a floor
• a sidewall connected to and surrounding the floor, and
• a rim integrally connected to at least a portion of the sidewall, and the lid comprising
• a cover panel whose outer dimensions are at least equal to the outer dimensions of the receptacle, and
• a pair of locking assemblies depending downwardly from edges of the cover panel, each locking assembly
• containing slot means for engaging the rim of the receptacle, and comprising
• an outer wall panel foldably connected to the cover panel, and means defining a semi-detachable retaining tongue in each outer wall panel,
• the lid being lockable to the receptacle by first engaging the rim of the receptacle in the slot means and then detaching the retaining tongues from the outer wall panels to engage the undersides of those portions of the rim which protrude through the slot means.

A container comprising a receptacle and a lid,

• the receptacle comprising a floor, a sidewall connected to and surrounding the floor, and a rim integrally connected to the sidewall;
• and
• the lid comprising:
• a cover panel whose outer dimensions are at least equal to the outer dimensions of the top of the receptacle;
• a pair of extension tabs formed at opposite edges of the cover panel,
• an outer wall panel foldably connected to each extension tab, and depending downwardly therefrom;
• a semi-detachable retaining tongue defined by slit and score lines in each outer wall panel, the lower edge of the tongue being foldably connected to the outer wall panel;
• a bottom wall panel foldably connected to the outer wall panel, an extending inwardly therefrom toward the receptacle;
• an inner wall panel foldably, connected to each bottom wall panel, and extending upwardly therefrom in a substantially parallel relationship to the outer wall panel;
• a glue flap foldably connected to each inner wall panel and secured in underlying relation to one of the extension tabs;
• and,
• an engagement slot formed at the junction of each glue flap with the adjacent inner wall panel, the length of the slot being less than the lengths of the glue flap and inner wall panel;
• wherein the lid is lockable to the receptacle by engaging portions of the rim in the engagement slots and pressing the retaining tongues inward to engage the portions of the rim protruding through the slots.

A unitary paperboard blank for fabricating a locking lid for a rimmed receptacle, the blank comprising:

• a cover panel, whose outer dimensions are at least equal to the outer dimensions of the receptacle;
• a pair of extension tabs formed at opposite edges of the cover panel;
• an outer wall panel foldably connected to each extension tab;
• means in each outer wall panel defining a semi-detachable retaining tongue;
• a bottom wall panel foldably connected to each outer wall panel;
• an inner wall panel foldably connected to each bottom wall panel;
• a glue flap foldably connected to each inner wall panel;
• and
• an engagement slot formed at the junction of each glue flap with the adjacent inner wall panel, the length of the slot being less than the length of the junction.