Abstract: A wind power turbine with a wind rotor which operates at variable speeds, a generator that can operate at a constant speed and an electric machine that can operate at a variable speeds, which are each in driving connection with one another by way of a superimposition transmission, such that as a power control device for regulating the speed of the generator, the electric machine is connected to a power grid and operates as a generator and motor. A controllable brake, for braking the generator, is arranged in the force flow between the transmission and the generator to extend the operating range of the wind power turbine down to lower wind speeds. When operating the turbine at low wind speeds, the brake is applied, the generator is deactivated, and electric current is produced by operating the electric machine as a generator, which is fed to the power grid.

Abstract: A wind power turbine with a wind rotor which operates at variable speeds, a generator that can operate at a constant speed and an electric machine that can operate at a variable speeds, which are each in driving connection with one another by way of a superimposition transmission, such that as a power control device for regulating the speed of the generator, the electric machine is connected to a power grid and operates as a generator and motor. A controllable brake, for braking the generator, is arranged in the force flow between the transmission and the generator to extend the operating range of the wind power turbine down to lower wind speeds. When operating the turbine at low wind speeds, the brake is applied, the generator is deactivated, and electric current is produced by operating the electric machine as a generator, which is fed to the power grid.

Abstract: A steering system for tracked vehicles having two brake circuits which is activated after a failure of the primary steering mechanism. The steering system includes a steering switch (L) that can be controlled by a steering axle which, in the event of primary steering system failure, acts upon the brakes of the vehicle in such a manner that rotation of the steering axle results in a braking action upon a track on the inside of a curve.

Abstract: A steering system for tracked vehicles having two brake circuits which is activated after a failure of the primary steering mechanism. The steering system includes a steering switch (L) that can be controlled by a steering axle which, in the event of primary steering system failure, acts upon the brakes of the vehicle in such a manner that rotation of the steering axle results in a braking action upon a track on the inside of a curve.

Abstract: An electrical drive system for a vehicle with a skid steering element exhibits a homogeneous electrical drive engine and a homogeneous gear unit (16, 18) on the left and on the right side in each case, which are propelled by a drive engine (2,4), assigned in each case, and over a power drive flange (28, 40) to propel a track or a drive wheel. Two transfer elements (26, 24) of the left gear unit (16), which do not form the drive, are directly connected by a mechanical gear train crosswise in each case with both transfer elements (36, 38) of the right gear unit, which do not form the drive.

Abstract: An electrical drive system for a vehicle with a skid steering element exhibits a homogeneous electrical drive engine and a homogeneous gear unit (16, 18) on the left and on the right side in each case, which are propelled by a drive engine (2, 4), assigned in each case, and over a power drive flange (28, 40) to propel a track or a drive wheel. Two transfer elements (26, 24) of the left gear unit (16), which do not form the drive, are directly connected by a mechanical gear train crosswise in each case with both transfer elements (36, 38) of the right gear unit, which do not form the drive.

Abstract: In a vehicle equipped with individual, electric wheel, drive trains, prime movers (16, 18) are situated radially outside the drive wheels (4, 6) and by a linking transmission (12, 14) rigidly connected with a vehicle body (2) are operatively coupled with drive wheels (4, 6). The drive wheels (4, 6) are unsprung relative to the vehicle body (2) and connected by transmission shafts (8, 10) with the linking transmission (12, 14). One shiftable clutch (32) is proposed with which the two drive wheels (4, 6) can be selectively operatively coupled together.

Abstract: In motor vehicles fitted with overlay steering mechanisms comprising a transmission (2) and a steering transmission (4), substantial amounts of torque flow from the transmission inlet (12) to the steering transmission (4) when cornering. This results in a loss of speed during cornering. According to the method described, the torque flow to the steering transmission (4) is preferably automatically compensated by higher prime mover torque. Driving performance can be enhanced during cornering without needing to design the transmission (2) for higher input torque. The principle disclosed in the invention can be used for other applications.

Abstract: A cross-drive steering transmission serves for steering a tracklaying vehicle and has the following characteristics: at least two fixed mechanical reduction gears which act according to at least two turning radii; in addition an automatic steering radius switching mechanism is provided between the fixed reduction gears (fixed steering radii) and a device for the driver inputting a desired steering radius. Also provided is a control unit which, depending on the steering radius input by the driver, switches among a plurality of the fixed steering radii and approximates the desired steering radius.

Abstract: A protection device for a steering transmission of a tracked vehicle having a plurality of planetary gear sets capable of engaging different ratios for cornering in curves with different radii. The input and output speeds of the steering transmission and the transmission ratios are determined and compared with predetermined operating parameters in order to determine if clutch slippage is occurring. If slippage is detected, the steering transmission is thereupon temporarily disengaged.