Inter-axle differential assembly for a tandem drive axle set

Details Inter-axle differential assembly for a tandem drive axle set Inter-axle differential assembly for a tandem drive axle set

2005-01-11

2005-01-11

Wright, Dirk (Department: 3681)

Planetary gear transmission systems or components

Differential planetary gearing

Differential or nondifferential planetary combined with...

C475S222000

Reexamination Certificate

active

06840882

ABSTRACT:
An inter-axle differential assembly for a tandem drive axle set is disclosed that significantly reduces the vertical distance between input axes for a rear drive assembly and a forward drive assembly. The forward drive assembly includes a hollow pinion gear that is supported by a pair of tapered roller bearings. An inter-axle differential assembly is supported by a single tapered roller bearing and receives input from a driveline connection and transfers this input to the hollow pinion gear and to a through shaft that extends through the hollow pinion gear. The hollow pinion gear drives a main differential assembly that in turn drives a forward axle. The through shaft extends toward a rear drive assembly and provides input to the rear drive assembly. The rear drive assembly utilizes a rear pinion gear to drive a rear differential. The rear differential in turn drives a rear axle. This configuration significantly reduces the vertical distance between the input to the forward drive assembly and the input to the rear drive assembly or even allows a common axis to be shared by the inputs to the forward and rear drive assemblies.

REFERENCES:
patent: RE25269 (1962-10-01), Christie
patent: 3532183 (1970-10-01), Shealy
patent: 3887037 (1975-06-01), Haluda et al.
patent: 4050534 (1977-09-01), Nelson et al.
patent: 5860889 (1999-01-01), Schlosser et al.
patent: 6200240 (2001-03-01), Oates
patent: 6648788 (2003-11-01), Sullivan
Interwheel Differential Drive Differentials of Wheeled Vehicles, Moscow Mashinostroyenie, 1987, pp. 35-45.
Translation of above.

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