US Patent 9675143 Press stud with an anti-uncoupling system

A press stud comprises a male element and a female element. The male element comprises a coupling portion which is insertable into a housing seat of the female element in a coupling direction. The coupling portion of the male element has an anti-uncoupling appendage which interferes with the female element and prevents the uncoupling of the male element from the female element when they are subjected to tension acting in a substantially transverse direction with respect to the direction of coupling.