Automatic transmission for vehicles

Details Automatic transmission for vehicles Automatic transmission for vehicles

1996-06-14

1997-10-14

Wright, Dirk

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475330, F16H 362, F16H 366

Patent

active

056766173

ABSTRACT:
An automatic transmission for a vehicle, as provided a plurality of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other. In the two sets of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other, the ring gears are identical to each other in the tooth number, the normal module, the normal pressure angle, the angle of torsion, the pitch radius, the base radius, the bottom diameter, the top diameter, the tooth height, the dedendum, the addendum, the lead, the coefficient of normal shift and the arcuate tooth thickness, and the pinions of those two sets of planetary gear units are identical to each other in at least the arcuate tooth thickness, the coefficient of normal shift, the dedendum, the addendum, the tooth height, the angle of torsion, the normal pressure angle and the normal module.

REFERENCES:
patent: 5098357 (1992-03-01), Asada et al.
patent: 5254053 (1993-10-01), Taniguchi et al.
patent: 5478291 (1995-12-01), Morisawa et al.

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