Patent ID: 7484270

Claim:
A hinging device for windows and doors including a fixed frame and a movable frame, comprising: a first support element to be fastened to the fixed frame, bearing a vertical main axis of articulation, and the first support element bearing a sliding guide orthogonal to the main axis of articulation, a second support element to be fastened to the movable frame, a main lever having a first end, an intermediate region and a second end, in which said first end of the main lever is articulated to the first support element around said main axis of articulation, a secondary lever having a first end, a second end and an intermediate region, in which the first end of the secondary lever is slidably articulated to the first support element in said sliding guide, in which the intermediate region of the secondary lever is articulated to the intermediate region of the main lever around a second axis of articulation parallel to the main axis of articulation, and in which the second end of the secondary lever is articulated to the second support element around a third axis of articulation, a connecting rod having a first end articulated to the second end of the main lever and a second end articulated to the second support element around a fourth axis of articulation, a first axis of articulation defined by a first pivot pin which rotatably engages a hole formed in a vertical portion of the second support element, said first pivot pin having a first tapered portion which is tiltable in a hole of the second end of the secondary lever, in such a way as to allow an inclination of the first pivot pin with respect to the secondary lever between a first and a second position, the first pin having a first pin axis substantially parallel to the main axis of articulation in the first position and the first pin axis being non-parallel to the main axis in the second position; and wherein the second axis of articulation is defined by a second pivot pin fastened to the second support element, the second pivot pin having a second tapered portion which is tiltable in a hole of the second end of the connecting rod in such a way as to allow an inclination of the second pivot pin with respect to the connecting rod between a first and a second position, the second pin having a second pin axis substantially parallel to the main axis of articulation in the first position and the second pin axis being non-parallel to the main axis in the second position.