Planetary gear type transmission mechanism

Details Planetary gear type transmission mechanism Planetary gear type transmission mechanism

1992-03-18

1993-03-16

Braun, Leslie A.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475280, F16H 5710

Patent

active

051940558

ABSTRACT:
A planetary gear type transmission mechanism reduces frictional resistance at all forward speed ratio. The transmission mechanism includes an input shaft, an output shaft, a first planetary gear set, a second planetary gear set and a friction means. The friction means includes a plurality of friction elements for determining power transmission route through at least one of the first and second planetary gear sets for establishing a plurality of forward speed ratios. At any forward speed ratio all gear elements of the first and second planetary gear sets except for the gear elements integrally coupled with the output shaft rotate in the same direction as that of the input shaft at speed less than the input shaft.

REFERENCES:
patent: 3877320 (1975-04-01), Iijima
patent: 4653348 (1987-03-01), Hiraiwa
patent: 5133697 (1992-07-01), Hattori
patent: 5135444 (1992-08-01), Hattori

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