A MOTION TRANSMISSION DEVICE FOR MOTOR-DRIVEN GATES

Described is a motion transmission device for gates (1) comprising a load-bearing frame (2) having a vertical upright (3) fixed to a treadable surface (P); a leaf (4) articulated with a relative vertical upright (5) to the vertical upright (3) of the frame (2) and a drive unit (6) associated with the vertical upright (3) of the frame (2) and equipped with means (7) for transmitting motion to the leaf (4) which is able to rotate the leaf (4) from a closed position of a passage opening to an open position of the passage opening and vice versa, wherein the motion transmission means (7) comprise a body (8) consisting of a first box-shaped portion (9) which can be associated with the vertical upright (3) of the frame (2) and having at least one through seat (10) for housing a rotary unit (11) configured to connect to the drive unit (6) and a second annular portion (12) configured to form a seat (13) for coupling with a stretch of the vertical upright (5) of the leaf (4); the second annular portion (12) is equipped with a device (14) for transmitting a rotary movement which can be associated with the stretch of the vertical upright (5) of the leaf (4); this transmission device (14) is connected by a kinematic mechanism with the rotary unit (11) to allow the passage of the motion from the drive unit (6) to the vertical upright (5) of the leaf (5). [Figure 1]