Patent ID: 8381355

Claim:
An adjustable hinge comprising: a plurality of hinge bodies for attachment to a fixed frame and to a mobile frame, respectively, of a door or window, a revolving pin for pivotally connecting the hinge bodies to one another, and a member for adjusting shared positions of the hinge bodies in a direction generally perpendicular to the axis of the pin, the adjustment member comprising a sleeve, associated axially with the pin, defining an external lateral surface for coupling with a corresponding housing defined in a first of the hinge bodies, the sleeve being pivotal inside the housing such that, while it remains in relatively constant contact with the walls of the housing during its rotation to change position, it may occupy substantially any position required along a limited length of the perpendicular adjustment direction a reversible locking member being provided for locking the sleeve in the positions it occupies inside the housing upon application of a thrusting force in a selected locking direction, wherein the sleeve has at least three distinct portions of contact with the walls of the housing, spaced angularly from one another, and when the locking member is engaged, at at least two of the distinct contact points a thrusting force is exerted, in directions incident to one another, on respective portions of the walls so as to accommodate for slack between the sleeve and the housing in incident directions, the thrusting force exerted by the locking member being separated into non-parallel directions coinciding with the at least two of the distinct contact points, and wherein the shape of the housing is symmetrical relative to a selected longitudinal plane generally parallel to the axis of the pin inside the sleeve, and is formed with three different sliding grooves for corresponding contact points, respectively two first grooves symmetrical with one another relative to the plane, and one second intermediate groove between the two first grooves, the two first grooves being radiused at adjacent ends, while having at opposite ends abutments for the respective contact points providing stops for rotation of the sleeve, the locking direction defined by the reversible locking of the sleeve lying in a plane of symmetry of the two first grooves.