Patent ID: 7634837

Claim:
A hinge comprising: a pin part comprising a body; a pin extending from the body to a free end, the pin defining a longitudinal axis, the pin generally rotationally symmetrical about the axis; and a beak projecting from the pin in a direction radially away from the axis and spaced apart from the body; and a receptacle part comprising: a body defining a central hole, wherein the pin can seat within the hole rotatably about the axis; and a rib partly encircling the hole and projecting radially inwards into the hole and having a gap between its ends, so that when the beak is aligned with the gap the pin can be inserted into or removed from the hole with the beak passing through the gap, and when the beak is not aligned with the gap the rib and the beak interfere to prevent the pin from being inserted into or removed from the hole; wherein the pin part is freely rotatable relative to the receptacle part with the pin seated in the hole and the beak on the opposite side of the rib from the pin part; and wherein the pin part has a mounting surface on one side of the pin, the receptacle part has a mounting surface on one side of the hole, and when the beak is aligned with the gap the mounting surfaces are on opposite sides of the pin and hole.