Differential apparatus

Details Differential apparatus Differential apparatus

1998-05-08

2000-05-23

Marmor, Charles A

Planetary gear transmission systems or components

Differential planetary gearing

Bevel gear differential

475231, F16H 4822

Patent

active

060660635

ABSTRACT:
Drive torque input to a rotatable differential case (3) is differentially distributed, through a pinion gear (25) rotatably supported by the different al case, to a pair of torque outputting side gears (27, 29) accommodated in the differential case and meshing at their toothed portions (27b, 29b) with the pinion gear, and a pair of difference limiting clutches (35, 37) for frictionally slippingly coupling the differential case with the pair of side gears each comprise a frictional region (7b, 5b) of a cone frustum figure on an inner wall (7a, 5a) of the differential case, a frictional region (27d, 29d) of a cone frustum figure on an outer wall (27c, 29c) of a body portion (27a, 29a) of either side gear, and a taper ring (47) rotatably interposed between the frictional regions which have different average friction radii (r1, r2) generating different average frictional forces. The taper ring may be formed with oil grooves (55, 57), and may have projections (73) loose fitted in openings (49) in the wall of the differential case.

REFERENCES:
patent: 1445865 (1923-02-01), Alden
patent: 2971404 (1961-02-01), Thornton
patent: 3186258 (1965-06-01), Meldola
patent: 3327563 (1967-06-01), Engle
patent: 3344688 (1967-10-01), Frost
patent: 4169394 (1979-10-01), Estrada
patent: 5226861 (1993-07-01), Engle
patent: 5556344 (1996-09-01), Fox
patent: 5671835 (1997-09-01), Tanaka et al.
patent: 5682971 (1997-11-01), Takakura et al.
patent: 5799762 (1998-09-01), Hinkel et al.

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