Container with cover lockable thereon

A closing mechanism for locking a cover onto a container in which the cover and the container each have a protruding flanged edge which come to lie against each other in a closed position, the closing mechanism comprising:

• a hook-shaped cam connected to the cover;
• a counter-cam connected to the container and configured to engage the cam to lock the cover onto the container;
• at least one slotted hole located on the flanged edge of the cover;
• and
• at least one slotted hole located on the flanged edge of the container,
• wherein a portion of the slotted hole in the cover overlaps a portion of the slotted hole in the container such that a wedge-shaped hand-tool can be placed in the overlapping portions of the slotted holes in the flanged edges to turn the cover in relation to the container such that the hook-shaped cam connected to the cover engages the counter-cam to lock the cover onto the container,
• wherein the hook-shaped cam of the cover protrudes below the flanged edge of the cover and the flanged edge of the container includes a locking hole, with an edge of the locking hole forming the counter-cam, and
• wherein a portion of the locking hole overlaps a portion of the slotted hole in the cover in the closed position.