Patent ID: 7818852

Claim:
A connecting system, comprising: an elongated element including a connecting member, the connecting member having an engaging portion; and a receiving element including an opening, the opening being shaped to allow sliding passage of the elongated element such that, with respect to a central axis of the elongated element, a shape of the engaging portion is aligned with a shape of the opening in a first angular position, whereby the connecting member passes through the opening, and in a second angular position different from the first angular position, interference exists between a surface of the engaging portion and a surface of the receiving element thereby preventing the connecting member from passing through the opening, wherein the engaging portion of the connecting member includes at least a pair of opposed indentations and/or protrusions, and wherein the at least a pair of opposed indentations and/or protrusions are arranged in staggered relationship around the elongated element at alternating angular positions.