Abstract: The motorized rolling armchair comprises a motor-transmission assembly (1,2) the output shaft of which (3) extends on either side of the transmission gear (1) and carries at each of its ends a rolling train (4,5). The motor-transmission assembly (1,2) carries a support (6) on which are fastened batteries (7) and which is provided at its front lower end with at least a roller (8). It comprises a light casing (9) on which the seat (10) and the back (11) of the armchair, of synthetic plastic material, are directly injected. Rapid corrections (14,20) are provided to couple and uncouple the casing to the motor-transmission assembly (1,2).

Abstract: The invention relates to a transmission device for the motorization of a rolling-chair for example. Said transmission device comprises a hollow shaft 7 provided at each of its ends with a rolling train 8-13 idly pivoted on the hollow shaft 7 and comprising a toothed crowns 21. It comprises two control shafts 14 slidingly mounted within the hollow shaft 7 merging each out of one end of it. Each control shaft 14 is connected to a pinion intended to cooperate with the corresponding toothed crown 21. It comprises a control device 23 of the axial position of said control shaft 14 with respect to the hollow shaft 7.