Abstract: The invention relates to a gear for conveyors which has a drive shaft to which a drive motor is to be fastened as well as an output shaft with which the gear is connected to the conveyor. However, at least one gear step is provided within the gear. Moreover, the gear is provided with a freewheel locking in one direction of rotation. A second gear step is provided in this case between the freewheel and the elements transmitting torque between drive and output shaft during normal operation, so that the freewheel should be operated at a higher speed and must only provide a low holding moment in the event of a stoppage.

Abstract: The invention involves an agricultural machine with a drive train to be coupled onto the power take-off shaft of a tractor, with a transmission integrated into the drive train. In these types of agricultural machines it is frequently necessary, after starting at a high torque, to select a lower transmission ratio, so that the agricultural machine can be driven at an optimal speed by an engine to which sufficient power is then still available for the propulsion for the tractor. In order to make this possible, it is proposed, in an agricultural machine of this type, to construct the transmission as a continuously variable conical-disk belt or chain transmission which is preferably fully hydraulic, is coupled with a hydraulic clutch, and has idle-shifting in the starting transmission ratio.

Abstract: Provided is an infinitely variable cone pulley transmission for which the contact pressure between the cone pulley pairs and the traction is generated hydraulically on one transmission side and mechanical, with the aid of a spring, on the other transmission side. The second transmission side is provided with an axially fixed and an axially movable cone pulley with extended hub. The contact pressure mechanism includes a cam sleeve that is fixed relative to the shaft, a cam sleeve formed by the free end of the hub and roll bodies for the force transmittal, which are inserted between opposite arranged cam curves and rotate around axes extending radial to the transmission shaft. The roll bodies are guided by rings and are held at a mutual distance to each other and with spring force in the axial center region between the cam sleeves, wherein the spring is arranged coaxial on the extended hub.

Abstract: A pulley gear for an infinitely-variable pulley drive has one pulley disposed on a drive shaft and another pulley disposed on an output shaft, and a transmission element circulating between the pulleys. An output side pressing force is applied to the output side pulley by a pressure medium and a drive side pressing force is applied to the drive side pulley by the pressure medium. The pulley gear has a valve that generates a torque-dependent pressure through the torque-dependent relative movement of a first ring, a jacket, and a second ring, thereby providing a load-dependent pressing force. A cylinder and the second ring form a first cylinder-piston aggregate, and the jacket and first and second rings form a second cylinder-piston aggregate. The first ring has a first cam track thereon and the second ring has a second cam track.

Abstract: A cone disc transmission is presented which is infinitely adjustable and includes the production of axial pressure forces of the cone discs on pulling member rotating between these cone discs via hydraulic tensioning member. The tensioning member, which are arranged on the transmission shafts, each axially influence one of the cone discs which are displaceably arranged on the respective transmission shaft. By way of a control valve, the tensioning member and the pressure medium conduits connected thereto are charged by a pressure medium which is supplied by a pump. A torque disposed on the drive shaft of the transmission in the reflux of the control valve throttles the reflux of the pressure medium as a result of the torque-dependent movement of two valve members relative to one another and as a function of the load and thus determines the basic pressure of the system.