Patent ID: 6996876

Claim:
An elastic hinge for eyeglasses, comprising: an elongated box-like body to be welded to an end of an eyeglass temple, said box-like body being provided with an open receptacle; an elastic element; a first hinge articulation element connected with said elastic element, both of which are inserted in said open receptacle during assembly preceding welding of the box-like body to the temple, said first hinge articulation element being arranged so as to be partially slideable within said receptacle; a second hinge articulation element to be fixed to a front of the eyeglasses; said first hinge articulation element being further pivoted to said second hinge; and wherein said elastic element is adapted to act by traction and is locked substantially with a first end thereof at said box-like body and with a second end thereof at said first articulation element, said first and second ends of the elastic element both having a larger diameter than an intermediate body part thereof, and wherein said box-like body has an opening that is formed on a side thereof to be fixed to said temple and provides said receptacle for insertion of said elastic element, said opening being formed by a longitudinal milling that extends substantially over an entire length of the box-like body, is slightly wider than a diameter of the intermediate body of said elastic element, and is provided with an axial hole that is parallel to said milling and has a diameter that is slightly larger than a diameter of said first and second ends of said elastic element, which partially extends in said milling, said axial hole being intersected by a perpendicular hole that is perpendicular to said milling and has a diameter that is larger than the diameter of the ends of said elastic element; and wherein an additional wider region suitable to contain said first end of said elastic element is further provided at an end of said milling, said second end of said elastic element, locked at said first articulation element, being accommodated in an end part of said axial hole, where it is positioned during assembly by extending the elastic element and inserting said second end thereof through said perpendicular hole that lies at right angles to the milling, a length of said elastic element, when inactive, being substantially equal to a distance between a bottom of said axial hole and said end of said milling.