Patent ID: 7833126

Claim:
An arrangement for power take-off on a two-shaft engine having a low-pressure shaft and a high-pressure shaft connected to a generator via an accessory drive gearbox, comprising: a high-pressure shaft gearbox arranged between the high-pressure shaft and the accessory drive gearbox; and a low-pressure shaft gearbox coupled to the low-pressure shaft; a first switchable clutch connecting the low-pressure shaft gearbox to the high-pressure shaft gearbox for power transmission from the low-pressure shaft gearbox to the high-pressure shaft gearbox, the clutch being actuatable under certain operating conditions, when a speed of the high-pressure shaft is reduced, a conical-pulley variable transmission connecting the low-pressure and high-pressure shaft gearboxes for speed adaptation and setting power transmission between the high-pressure and low-pressure shaft gearboxes; and an overrunning clutch connected between the low-pressure and high-pressure shaft gearboxes to allow energy transmission from the low-pressure shaft to the high-pressure shaft and prevent energy transmission from the high-pressure shaft to the low-pressure shaft.