Joint for articulations with pseudo-elastic elements

A joint for articulations comprising:

• a pair of coupled box-shaped elements, facing each other in an open surface, moveable and rotating with respect to each other, around a common longitudinal axis, each of the pair of coupled box-shaped element containing a spring-charged pseudo-elastic element terminating in a first end and a second end;
• said first end being positioned in a hole in one of said pair of coupled box-shaped elements and said second end being positioned in another of said pair off box-shaped elements whereby said spring charged pseudo-elastic element causes the reciprocal rotation of each element of said pair of coupled box-shaped elements;
• each element of said pair of coupled box-shaped elements carrying an arm that faces outwardly for connection with associated portions of an articulation and including at least a stop element;
• said joint further comprising an interposed ball bearing that is situated on or within inner extensions of said pair of coupled box-shaped elements, wherein said spring-charged pseudo-elastic element is positioned around said inner extensions;
• said extensions carrying an axial constraint member for said pair of coupled box-shaped elements;
• wherein said inner extensions of said pair of coupled box-shaped elements comprises a sleeve and a pin interpenetrating one another and positioned respectively on a base of the relative element of said pair of coupled box-shaped elements;
• said pin and said sleeve being aligned with a said common longitudinal axis so that the sleeve acts as an external housing for said interposed ball bearing, and said pin is inserted in said interposed ball bearing.