Patent ID: 7421920

Claim:
A multi-geared power shift transmission for a construction machine providing improved installation flexibility, the transmission comprising: a torque converter ( 2 ); a drive shaft ( 3 ) being drivingly coupled to the torque converter ( 2 ); a first counter shaft ( 5 ); a second counter shaft ( 6 ); a third counter shaft ( 17 ); and an output shaft ( 4 ) for supplying driving power; and each of the drive shaft ( 3 ), the output shaft ( 4 ), the first counter shaft ( 5 ), the second counter shaft ( 6 ) and the third counter shaft ( 17 ) having a gear unit comprising at least one of a fixed gear wheel, an idler gear wheel and a shift clutch ( 8 , 9 , 10 , 11 , 12 , 13 ), which couples the idler gear wheel to the respective shaft, such that up to four forward gear ratios and two reverse gear ratios can be engaged; the gear unit of the drive shaft ( 3 ) is only directly drivingly engagable with a component of the gear unit of the first counter shaft ( 5 ) and a component of the gear unit of the third counter shaft ( 17 ); the gear unit of the first counter shaft ( 5 ) is only directly drivingly engagable with a component of the gear unit of the drive shaft ( 3 ), a component of the gear unit of the third counter shaft ( 17 ) and a component of the gear unit of the second counter shaft ( 6 ); the gear unit of the second counter shaft ( 6 ) is only directly drivingly engagable with a component of the gear unit of the first counter shaft ( 5 ) and a component of the gear unit of the output shaft ( 4 ); the gear unit of the third counter shaft ( 17 ) is only directly drivingly engagable with a component of the gear unit of the drive shaft ( 3 ) and a component of the gear unit of the first counter shaft ( 5 ); and the gear unit of the output shaft ( 4 ) is directly drivingly engagable with at least a component of the gear unit of the second counter shaft ( 6 ), whereby that the transmission provides improved installation flexibility.