Patent ID: 6763745
Filing Date: 2004-07-20
Classification: F16B

Abstract:
A device for attaching a first structural element to a second structural element comprising:a hole in the first structural element an attachment element for passing through the hole; a retaining element arranged on the second structural element; the attachment element comprising a shank having an axis and a head at one end and a part which is profiled so that it can engage in, and be withdrawn from, the retaining element along the axis in a first angular position of the attachment element; the part being retained in the retaining element in a second angular position offset with respect to the first angular position; the head having an upper face with a recess substantially across the upper face; the recess comprising a slot having in a longitudinal profile a bottom curved in a circular arc, the center of the arc being located at some distance above the head such that opposed longitudinal ends of the slot open out from the upper face of the head at points offset radially inwards with respect to the perimeter of the head; wherein the slot has a transverse profile with a concave curved bottom; and wherein the slot has a width that is at least equal to a maximum depth of the slot at the center of the head.