DIFFERENTIAL ASSEMBLY WITH TWO JOINTLY ACTUATED AXIAL ADJUSTMENT DEVICES
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United States of America Patent
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Issued Date -
Jun 25, 2009
app pub date -
Dec 2, 2006
filing date -
Dec 20, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A differential assembly 2 for variable torque distribution in the drive line of a motor vehicle. A differential gear 21 with a rotationally drivable differential cage 4 and two output shafts 3, 3', which are drivingly connected to the differential cage 4 by means of a differential gear set 7, 9, 9', wherein a first drive train is formed. A gear stage 14, 14' per output shaft 3, 3', which gear stage is drivingly connected on one side to the differential cage 4 and on the other side to one of the output shafts 3, 3' is part of a second drive train which is functionally parallel to the first drive train. Friction clutch 15, 15' are provided for each gear stage 14, 14' and ball ramp assemblies are provided for actuating the friction clutches, the ball ramp assembly having a plurality of ball grooves 44, 45; 44', 45' of variable depth. A single electric motor 52 is drivingly connected to rotatably driveable discs 43; 43' of axial setting devices 16, 16'.
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