US Patent 7478868 Armchair tablet hinge system

The invention relates to an armchair tablet hinge system. According to the invention, the tablet (1) is mounted to an armrest of the armchair by means of a support (4), said support containing a hollow shaft (5). The end of the hollow shaft is provided with a head (6) to which the tablet (1) is articulated by means of a cam-shaped element (7). In addition, rod (10) is housed in the aforementioned shaft (5) and is pushed against the cam-shaped element (7) by means of a spring (11). Moreover, the end of the rod (10) can be inserted into a notch (13) in the cam (7) in order provisionally to block the rotation of the tablet (1).