Patent ID: 6374459
Filing Date: 2002-04-23
Classification: E05D,E05F,E05Y,Y10T

Abstract:
A snap hinge for supporting closure sheet elements, comprising:a first articulated quadrilateral constituted by a coupling plate connectable to a movable sheet element, by a first arm, by a first lever, and by a second lever, said first arm being pivoted at opposite ends thereof to said coupling plate and first lever, respectively, and said second lever being pivoted at opposite ends thereof to said coupling plate and first lever respectively; a second articulated quadrilateral constituted by a bridge coupling plate connectable to a further sheet element, by a second arm and by said first and second levers in common with said first articulated quadrilateral, said second arm being pivoted at opposite ends to said bridge coupling plate and second lever, respectively; and at least two elastic means arranged in parallel to exert a thrusting action between said bridge coupling plate and an end of said first lever so as to keep the hinge stable in two extreme open and closed positions and withstand the weight of said movable sheet element.