Splined ring gear having a thicker radial portion at one axial p

Details Splined ring gear having a thicker radial portion at one axial p Splined ring gear having a thicker radial portion at one axial p

1998-02-10

1999-06-29

Ta, Khoi Q.

Planetary gear transmission systems or components

Planetary gearing or element

475344, F16H 344, F16H 1500

Patent

active

059160560

ABSTRACT:
In a planetary gear device of an automatic transmission, including a sun gear, a plurality of pinion gears that engage with the sun gear, a carrier that rotatably supports the pinion gears, a ring gear having inner teeth formed on an inner periphery thereof for engagement with the pinion gears, a spline is formed on an outer periphery of the ring gear over a first portion that extends from one axial end of the ring gear to a given point between the one axial end and the other axial end, such that only the first portion of the spline engages with friction plates of a clutch. The ring gear further has a second portion that extends from the given point to the other axial end, which second portion has a larger thickness that the first portion of the ring gear that extends from the above-indicated one axial end to the given point.

REFERENCES:
patent: 5267917 (1993-12-01), Kadotani et al.
patent: 5676617 (1997-10-01), Tabata et al.
patent: 5792020 (1998-08-01), Kikuchi et al.

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