Differential gear unit

Details Differential gear unit Differential gear unit

2005-01-27

2010-11-09

Ridley, Richard W (Department: 3656)

Machine element or mechanism

Elements

Gear casings

C475S230000

Reexamination Certificate

active

07827882

ABSTRACT:
A differential gear unit divides an input driving force into first and second outputs, and permits a difference between the first and second outputs. The differential gear unit includes a differential case serving as a casing that defines an internal space and an opening communicated with the internal space and that is rotatable in a given direction and an opposite direction. The differential case includes a flange portion as an input portion to which the driving force is input. The differential case is configured such that the fatigue life of the differential case when the driving force is repeatedly input in the flange portion in the direction R1is longer than the fatigue life of the differential case when the driving force is repeatedly input in the flange portion in the opposite direction; R1is the rotational direction in which the vehicle runs forward.

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