Patent ID: 11905074
Assignee: ROQUETTE FRERES
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A packaging comprising a container, of plastic, comprising lateral walls meeting at corners, an upper opening and a bottom, and a detachable lid of plastic configured to cover the upper opening of the container, and wherein the container is provided at the upper opening thereof with a first engagement portion bearing an outwardly directed ridge, and extending over the periphery, said lid being provided over a peripheral part thereof with a second engagement portion extending folded downward provided with an inwardly directed ridge which is able to latch below the outwardly directed ridge of the container, and wherein the second engagement portion of the lid has a skirt extending over a lower part of the second engagement portion, and wherein the outwardly directed ridge of the container and the inwardly directed ridge of the lid having curved corner sections in the corners where said lateral walls meet, said curved corner sections connecting lateral sections of the outwardly directed ridge and the inwardly directed ridge, where at least one of the curved corner sections of the inwardly directed ridge is provided with a foldable skirt section, articulated in a folding area at an upper part of the second engagement portion which is able to be folded from an engagement position to an outwardly directed position in such a way that a central part of said at least one corner section of the inwardly directed ridge is separated by a levering effect of the outwardly directed ridge of at the upper opening of the container, and that the engagement between the outwardly directed ridge and the inwardly directed ridges is thus weakened over the central part, and wherein said foldable skirt section is separated from a remaining section of the skirt not being part of the foldable section by means of two grooves formed in the outer surface of the skirt and extending downward from a folding area to a lower edge of the skirt, said grooves reducing the thickness of a wall of the skirt in such a way that the skirt can be broken along the grooves in order to fold the foldable skirt section from the engagement position thereof toward the outwardly directed position thereof
wherein the first engagement portion of the container bearing the outwardly directed ridge extends and is elongated below the outwardly directed ridge, referred to as first ridge, and ends below the first ridge by a second outwardly directed ridge, having a curved corner section, and wherein the foldable skirt section bears at least one lug, inwardly directed, which in the engagement position of the foldable skirt section is able to latch below the second outwardly directed ridge of the first engagement portion, at least when a force is applied to the lid tending to detach the lid,
and wherein latching of the said at least one lug on the second outwardly directed ridge is achieved, in the engagement position of the foldable skirt section in a local area only along the curved corner section of the second outwardly directed ridge, and with a latching covering between mutually engaging faces of said at least one lug and of the second outwardly directed ridge, when viewed in a direction radial to the curved corner section of the second outwardly directed ridge, of larger dimension than the latching covering between the mutually engaging faces of the inwardly directed ridge and of the first ridge, when viewed along a direction radial to the curved corner section of the first ridge.