Abstract: In a loading platform system for mounting on vehicles, particularly trucks, comprising at least one lift support arrangement consisting of two essentially parallel spaced support structures, an essentially plate-like loading platform for lifting and lowering a load, at least one lift actuator for lifting and lowering the loading platform and a slide unit, which is movable back and forth in the longitudinal direction of the vehicle and mountable on the vehicle and on which at least the lift support arrangement, the loading platform and the lift actuator are mounted. The slide unit is adapted to be mounted on the support frame of the vehicle by transverse frame members, which are fitted to the spacing of the vehicle support frame members and include means at their ends for mounting them to the vehicle support frame members.

Abstract: In a loading platform system for mounting on a vehicle, especially a truck provided with a loading platform mounted to the vehicle by a lift support structure which is operated by a lift actuator for lifting and lowering loads onto, and from, a vehicle loading bed by way of the loading platform, a locking structure is provided for locking the loading platform in its raised position in which its surface is in planar alignment with the vehicle loading bed, thereby preventing exposure of the lift actuator to the stresses generated by heavy loads disposed on the loading platform during loading and unloading of the vehicle.

Abstract: In an arrangement for mounting a loading platform system on the chassis or frame of a vehicle having longitudinal vehicle frame members disposed in spaced relationship, a transverse support frame structure having an adjustable transverse length is provided permitting adaptation of the transverse support frame structure to the distance between the longitudinal vehicle frame members for mounting the transverse support frame structure to the longitudinal vehicle frame members. The transverse support frame structure includes means for supporting the loading platform system.

Abstract: In a circuit arrangement for starting a DC motor comprising at least one field winding, particularly for switching on a DC motor for driving a hydraulic fluid pump for operating hydraulic actuators of a vehicle loading platform system, means are provided for switching on at least one field winding and means activatable by the switching on of the at least one field winding for fully activating and starting the DC motor.

Abstract: In an arrangement for mounting a loading platform system on the chassis or frame of a vehicle having longitudinal vehicle frame members disposed in spaced relationship, a transverse support frame structure having an adjustable transverse length is provided permitting adaptation of the transverse support frame structure to the distance between the longitudinal vehicle frame members for mounting the transverse support frame structure to the longitudinal vehicle frame members. The transverse support frame structure includes means for supporting the loading platform system.

Abstract: In a loading platform system for mounting on a vehicle, comprising a lift mechanism support structure, at least a first support arm having an end pivotally connected to the lift mechanism support structure and pivotally supporting at its other end a loading platform for supporting a load and a lifting actuator connected between the lift mechanism support structure and the other end of the support arm for operating the support arm for lifting and lowering the loading platform, the loading platform is pivotally connected to the second end of the first support arm by way of a spring-loaded guide member, which is movably disposed in an opening formed in a guide element mounted on the support arm at the other end thereof.

Abstract: In a loading platform system for mounting on a vehicle, especially a truck provided with a loading platform mounted to the vehicle by a lift support structure which is operated by a lift actuator for lifting and lowering loads onto, and from, a vehicle loading bed by way of the loading platform, means are provided for locking the loading platform in its raised position in which its surface is in planar alignment with the vehicle loading bed, thereby preventing exposure of the lift actuator to the stresses generated by heavy loads disposed on the loading platform during loading and unloading of the vehicle.

Abstract: In a control unit for the manually operable control of the lifting and lowering and/or upward tilting in a vertical position and the back-tilting of a loading platform of a loading platform system, which can be mounted on vehicles, particularly trucks, and which includes an electromechanical and/or electronic control circuit, a first light for characterizing an operating condition of the loading platform system is provided, wherein the control circuit is so designed, that, if after initiation of the operation of the loading platform system, the first light lights up, the supply voltage of the loading platform system is indicated to be at least sufficiently high for proper operation of the loading platform system.

Abstract: A lift-type loading platform system, which system can be mounted on a motor vehicle, particularly a truck, the system including a lifting and closing mechanism which has an essentially parallelogram configuration, which mechanism includes two supporting frames which are generally mutually parallel and spaced a distance apart, an essentially plate-like loading platform, intended for raising and lowering a load and for closing off a cargo compartment or backdraft space of the vehicle, a "lifting" cylinder mechanism for raising and lowering the platform, and a "closing" cylinder mechanism for swinging the loading platform back and forth from the horizontal to the vertical position.