Differential gear mechanism and improved axle retention...

Details Differential gear mechanism and improved axle retention... Differential gear mechanism and improved axle retention...

2006-09-12

2006-09-12

Pang, Robert (Department: 3681)

Planetary gear transmission systems or components

Differential planetary gearing

Bevel gear differential

C475S088000

Reexamination Certificate

active

07104912

ABSTRACT:
A differential gear mechanism (11) and improved axle shaft (53) retention arrangement for the axle shaft. The mechanism includes a side gear (27) defining first internal splines, a coupling (35) defining second internal splines (35S), and a rotor (49) of a gerotor pump defining third internal splines (49S). The axle shaft includes external splines (55), an annular groove (57), and a collapsible and expandable retention ring (59) within the groove. The assembly operator aligns the external splines with the third internal splines (49S), then with the second internal splines (35S), and finally, with the first internal splines (27S), before exerting force (“F” in FIG.3) on the axle shaft to collapse the retention ring by passing it through the third internal splines (49S) until the ring can expand (FIG.4). The axle shaft is retained as the retention ring engages an inboard end (69) of the third internal splines.

REFERENCES:
patent: 5149309 (1992-09-01), Guimbretiere
patent: 5215506 (1993-06-01), Hara
patent: 5310388 (1994-05-01), Okcuoglu et al.
patent: 5924948 (1999-07-01), Kwoka
patent: 5938555 (1999-08-01), Leeper
patent: 6014916 (2000-01-01), Tyson
patent: 6413182 (2002-07-01), Yates III et al.
patent: 6733411 (2004-05-01), Kaplan et al.

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