Abstract: A percussion device for bone implantology includes a body housing an electromagnetic coil for the acceleration of a percussion anchor and from which a stem of a metal tool projects, a sonic rod which runs through the core of the electromagnetic coil and along which the percussion anchor is slidable, the sonic rod including a terminal head with which the stem of a metal tool is integrally engageable, a floating yoke arranged in the proximity of the terminal head which acts as travel end stop for the anchor, and wherein the electromagnetic coil is energized impulsewise with an electric current of a duration below 20 milliseconds and energy ranging between 0.8-1.2 KW, to produce an impact of the anchor on the yoke which develops an energy transferred to the tool stem through a sonic wave and a translational momentum, the force developed ranging between 60 and 260 daN.

Abstract: A high-chair including a support structure for a seat adapted to contain a child, the structure having a pair of front legs and a pair of rear legs, the seat having arm rests to which a tray is removably coupled, the tray being able to be associated, when not in use, with the rear legs of the structure. The tray includes movable coupling elements arranged to cooperate with counter-elements associated with the legs, the coupling elements being movable within respective seats provided in the tray against the action of a corresponding elastic thrust element, this enabling rapid snap-coupling of the elements and counter-elements when brought into a facing position.

Abstract: A high-chair including a support structure for a seat adapted to contain a child, the structure having a pair of front legs and a pair of rear legs, the seat having arm rests to which a tray is removably coupled, the tray being able to be associated, when not in use, with the rear legs of the structure. The tray includes movable coupling elements arranged to cooperate with counter-elements associated with the legs, the coupling elements being movable within respective seats provided in the tray against the action of a corresponding elastic thrust element, this enabling rapid snap-coupling of the elements and counter-elements when brought into a facing position.

Abstract: A percussion device for bone implantology includes a body housing an electromagnetic coil for the acceleration of a percussion anchor and from which a stem of a metal tool projects, a sonic rod which runs through the core of the electromagnetic coil and along which the percussion anchor is slidable, the sonic rod including a terminal head with which the stem of a metal tool is integrally engageable, a floating yoke arranged in the proximity of the terminal head which acts as travel end stop for the anchor, and wherein the electromagnetic coil is energized impulsewise with an electric current of a duration below 20 milliseconds and energy ranging between 0.8-1.2 KW, to produce an impact of the anchor on the yoke which develops an energy transferred to the tool stem through a sonic wave and a translational momentum, the force developed ranging between 60 and 260 daN.

Abstract: A lamp which can be quickly fixed and fully revolving, particularly for use in maintenance and repair operations in motorvehicles, comprising a strong sucker base, a flexible stem, and a lampholder with directional reflector.