Patent ID: 7223192

Claim:
A differential comprising: a rotatable casing for receiving input from an engine; a differential gear set of a bevel gear type, the differential gear set including: a pinion shaft supported in and rotated with the casing; a pinion gear rotatably supported by the pinion shaft; and a pair of side gears for output, each of the side gears including a body having a friction surface and a gear portion standing from the body and being engaged with the pinion gear; and a pair of rings respectively interposed between the side gears and the casing, each of the rings being so dimensioned as to expose the gear portion to an internal surface of the casing and including a recess along an outer periphery of the ring, wherein when the pair of rings are interposed between the side gears and the casing, said two recesses are so dimensioned that the entire pinion gear passes through said two recesses with a clearance.