Hydrodynamic automatic transmission

A hydrodynamic transmission gear-box for a vehicle, comprising:

• at least two pump wheels, which are round flat discs, on a front peripheral part of which firmly mounted are radially directed blades,
• wherein a first wheel is rigidly connected with an input shaft;
• wherein a second wheel and subsequent pump wheels, a diameter of each of the subsequent pump wheels is larger than a diameter of a preceding one of the subsequent pump wheels, have hubs that are mounted onto the hubs of preceding pump wheels and are permitted to freely rotate thereon, but are restricted from mutual axial movement,
• wherein a device is installed on a back of each of the round flat discs to block each of the round flat discs with a corresponding one of the subsequent pump wheels, and a last of the pump wheels with a turbine wheel;
• wherein a front side of the second wheel and the subsequent pump wheels and a front side of the turbine wheel include cylindrical rings with internal teeth for coupling with the locking device;
• wherein blades of the turbine wheel from a side that faces blades of the pump wheels are covered with a cone-shaped ring disc,
• wherein a larger diameter of the cone-shaped ring disc is equal to a diameter of the round flat disc of the last pump wheel, and a smaller diameter of the cone-shaped ring disc equals a smaller diameter of blades of a first one of the pump wheels;
• and
• wherein the turbine wheel is mounted on the input shaft within a crankcase of a drive device on bearings and is connected to a reverse mechanism and drive gear of the vehicle.