Abstract: The dual power unit includes an elongate housing having mounted therein adjacent opposite ends thereof two power units, one of which is drivingly connected to the movable back of an armchair, and the other unit is connected to a movable footrest of an armchair. Each unit includes a pivotal shaft connected to the back or footrest of the armchair. Each such shaft is connected to the output shaft of an electronic motor reducer through a transmission-gear in the form of a screw extending transversely of the respective pivotal shaft. The screw is drivingly connected through a threaded slider which is in engagement with a pair of cam elements mounted on a respective pivotal shaft to impart pivotal movement thereto, and consquent movement to the portion of the armchair connected thereto.