Abstract: A power-operated scissor table, provided with a base (4) and an upper platform or tabletop (5) connected by means of a scissor-type mechanism (1-2) actuated by means of a pair of thrust shafts (12-13) susceptible to approaching one another or moving away from one another with the collaboration of a pair of belts (14) and (15), wrapping around said shafts, which are fixed to the structure of the table at one of their ends through tension members and are fixed at their other end to respective wrap sheaves (17) and (18) assembled on a common shaft (19), the invention consists of coupling to the ends of said shaft (19) respective geared motors (20-20?), assisted by respective clutches (21-21?), such that one of said motors is operative while the other one is in a standby situation, and such that with the collaboration of an electronic circuit, when the operative motor undergoes a failure, said motor remains out of service and is declutched from the shaft (19), making the other motor automatically clutch said shaf

Abstract: A pantographic device for conveying loads in vehicle assembly lines includes a horizontal assembled drive shaft on an upper frame and with the capacity to rotate, several parallel pulleys fixed to a drive shaft, two motors acting on the opposing ends of the drive shaft providing its rotational movement, and several flat belts fixed to the pulleys of the drive shaft on one end and two a lower frame on the opposite end, so that the rotation of the drive shaft in one direction and the other determines vertical lifting and lowering of the lower frame with regard to the upper frame.

Abstract: This table comprises scissor arms (1, 2) assembled on a common rotation axis (3) and two thrust shafts (6, 7) shifting by the action of drive means and acting on the opposite sides of the scissor arms (1, 2), causing the tabletop (5) to lift or lower. The drive means comprise: a geared motor (8) providing a rotational movement to a first thrust shaft (6); an anti-rotation support (9) preventing the geared motor (8) from rotating around said first thrust shaft (6), and belts (10) fixed to the anti-rotation support (9) by one of their ends and to the periphery of the first thrust shaft (6) by the opposite end, wrapping around the second thrust shaft (7) with their intermediate area.

Abstract: A pantographic device for conveying loads in vehicle assembly lines includes a horizontal assembled drive shaft on an upper frame and with the capacity to rotate, several parallel pulleys fixed to a drive shaft, two motors acting on the opposing ends of the drive shaft providing its rotational movement, and several flat belts fixed to the pulleys of the drive shaft on one end and two a lower frame on the opposite end, so that the rotation of the drive shaft in one direction and the other determines vertical lifting and lowering of the lower frame with regard to the upper frame.

Abstract: A device for transporting vehicles during manufacturing is disclosed that allows for upward and downward movement of the vehicle but avoids adverse longitudinal or transverse swinging. The inventive device includes a moving carriage mounted on a fixed rail, an upper frame, a lower frame moveably connected with an elevation mechanism and at least one first pair of articulated arms for stabilizing the vertical movement of the vehicle. An additional pair of articulated arms may be provided which extend and retract in a plane that is perpendicular to the first pair of articulated arms. Additional stabilizing roller elements connected to a fixed rail are provided on a lateral arm of the upper frame to prevent swinging of the upper and the lower frames of the transporting device.

Abstract: This table comprises scissor arms (1, 2) assembled on a common rotation axis (3) and two thrust shafts (6, 7) shifting by the action of drive means and acting on the opposite sides of the scissor arms (1, 2), causing the tabletop (5) to lift or lower.

Abstract: A device for transporting vehicles during manufacturing is disclosed that allows for upward and downward movement of the vehicle but avoids adverse longitudinal or transverse swinging. The inventive device includes a moving carriage mounted on a fixed rail, an upper frame, a lower frame moveably connected with an elevation mechanism and at least one first pair of articulated arms for stabilizing the vertical movement of the vehicle. An additional pair of articulated arms may be provided which extend and retract in a plane that is perpendicular to the first pair of articulated arms. Additional stabilizing roller elements connected to a fixed rail are provided on a lateral arm of the upper frame to prevent swinging of the upper and the lower frames of the transporting device.

Abstract: A dual strand-type transport device of the type which includes sections of chain for loads supported on wheels at at least four points wherein, for each strand, there is provided a section forming a closed circuit of chain which is accommodated inside a longitudinal cavity defined by a rail of quadrangular section, having two tracks which are strictly parallel over the whole of their route, a propellent mechanism constituted by an electric motor with speed-regulating and safety elements, and a transmission element which connects the two tracks, thus ensuring that the two strands maintain a constant radial speed.

Abstract: A vehicle travels along a rail and, driven by an onboard motor. The vehicle includes an auxiliary guide wheel mounted in a floating arrangement on a component acted upon by a helical spring. A shaft on which the wheel is mounted is disposed in an elongated slot in a lever. The lever is articulated at a place on the vehicle body and its other end is acted upon by a second spring. Rotation of the lever is limited by a stop which is secured to the vehicle. When the auxiliary guide wheel makes contact with the guide rail, the two springs are compressed, so that the two wheels touch. Consequently, contact between the outer peripheral surfaces of the two wheels occurs only when the vehicle is moving underneath the guide rail. At other times during operation, there is no contact and no wear on the material forming the outer peripheral surfaces of the two wheel.