Patent ID: 7735674

Claim:
A sealed food box having a cover and an open body made up of a bottom wall and a side wall comprising: a lower end face of the cover defining a groove and including an elongated, substantially horizontal inner edge extending between and separating an inner wall and an outer wall of said groove; a mouth of the body including an elongated, substantially horizontal outer edge extending between an inner side and an outer side of said mouth, said elongated outer edge of said mouth being in contact with said elongated inner edge of the cover to form a seal between the cover and the body, said groove constructed to envelop said elongated outer edge of said mouth of the body, wherein said inner wall of said groove is firmly placed against an inner side of said mouth through a locking fastener engaging said inner side of said mouth for inhibiting movement of said inner wall of said groove relative to said inner side of said mouth, and a convex block attached to an inner surface of said outer wall of said groove that engages and inwardly presses against a substantial portion of said outer side of said mouth without engaging any portion of a bottom edge of said outer side of said mouth to allow movement of the cover with respect to the body.