Abstract: A fluid cooling system of a combustion engine charged by a turbocharger includes, but is not limited to a first cooling circuit operable by a coolant pump which runs through an engine block cooling jacket and a second cooling circuit branched off from the first cooling circuit, which runs through a cooling jacket formed between an inner wall and an outer wall of a double-walled turbine housing of the turbocharger.

Abstract: Escalator with driver device for carrying of transportation carts on the escalator steps. The transportation carts are secured against rolling down the escalator steps by a carrying and abutment device, which device is arranged on both sides of the transportation carts along the balustrades.

Abstract: A transporter conveyor system, integrated with an escalator, for the transportation of pieces of baggage from one conveying plane to a different conveying plane. Parallel to the escalator for the transportation of people there is arranged an endless baggage conveyor belt which is provided with balustrades, which conveyor belt is driven synchronously with the escalator.

Abstract: Conveyor, especially autowalks for persons, with endless inner and outer link chains and pallet carriages arranged between these chains and having opposite ends respectively connected to these chains. Both chains are driven in synchronism either by two coaxial gears or by a reversing gear pertaining to the inner chain and deviating gears pertaining to the outer chain and intermediate gear means between the reversing gear for the inner chain and one of the deviating gears for the outer chain.

Abstract: A hydraulically controlled and driven dredge, in which the pumps for delivering the driving fluid for the bucket wheel drive are equipped with output controls for controlling the fluid delivery in conformity with the encountered digging resistance and that a control conduit branched off from a pressure conduit leading to a hydraulic motor for driving the bucket wheel is connected to an output limiting valve located in a control circuit which includes an adjusting device connected through conduits to a manually operable control for varying the delivery and the delivery direction of the pump for actuating the hydraulic motor for pivoting the upper structure of the dredge. The fluid delivery of the pumps to the hydraulic motor employed for driving the track laying mechanism being conveyed to the hydraulic motor for driving the bucket wheel when the track laying mechanism is not to be operated.