Abstract: A hinge is described having a first plate consisting of two leaves which form at their end portions a barrel and an awl member received within the barrel. A second plate is then mounted on the awl member so that the second plate is contained within a plane which is parallel to the plane containing the longitudinal axis of the awl member. The diameter of the awl member is slightly larger than the diameter of the barrel and when the plates are mounted with screws, the diameter of the barrel will be further restricted so that friction will control operation of the hinge.

Abstract: A free positioning tilt unit for use in portable computer or the like, comprises of main frame, mounting bracket element, sleeve, display unit and bushing, in which the opening, closing and positioning of the display unit is achieved by means of the revolving and positioning of the bushing in the sleeve; the bushing is secured to the display unit by means of the engagement of relative tangent planes so as to follow the display unit to move; a central through-hole is formed, when all the component parts are respectively connected together, for insert therethrough of electric wires.