Planetary gear system

Details Planetary gear system Planetary gear system

1990-09-25

1991-10-22

Wright, Dirk

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475330, F16H 362

Patent

active

050591622

ABSTRACT:
A planetary gear system includes a main planetary gear train including first and second planetary gear sets coaxial with an input shaft, and a secondary planetary gear train including a third planetary gear set coaxial with an output shaft. Each gear set has three rotary active elements, a sun gear, a ring gear and a planet carrier. Among six rotary active elements of the first and second gear sets, one active element of the first gear set is connected with one active element of the second gear set, and another active element of the first gear set is connected with another active element of the second gear set so that each connected element pair rotates as a unit. Furthermore, the third gear set is combined with the main gear train in such a compound manner that rotations of two different active elements of the third gear set are restricted, respectively by two different active elements of the main gear train.

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