Patent ID: 7001126

Claim:
A rivet, comprising: a nut having a through opening; a stem passable through the opening of said nut which is slidable along said stem, said stem having upper and lower ends and a notched portion located between said upper and lower ends; a head at the upper end of said stem; said nut further comprising, on an inner face of the opening, at least one tooth engageable with said notched portion; and a locking element elastically moveable between a folded position and a locked position, wherein said locking element has a greater radial extent in the locked position than in the folded position; wherein said locking element comprises: a first section being elastically deformable and having a proximal end joined to said stem at a first location, and a distal end, wherein said locking element further has, between the folded and locked positions, a relaxed position in which said first section extends obliquely upwardly towards said head; and a second section having a proximal end and a distal end and a middle portion therebetween, said second section being joined to the distal end of said first section at said middle portion, wherein, in the relaxed position, said second section extends obliquely downwardly away from said head; and said stem further comprises, at a second location closer to said head than said first location, a flange facing, in an axial direction of said stem, towards said head, said flange defining a blocking surface on which a lower surface of the proximal end of said second section rests in the locked position.