Change-speed gearbox with three epicyclic partial gear trains

Details Change-speed gearbox with three epicyclic partial gear trains Change-speed gearbox with three epicyclic partial gear trains

1993-11-17

1995-07-25

Wright, Dirk

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

F16H 362, F16H 4708

Patent

active

054357918

ABSTRACT:
In a change-speed gearbox with three epicyclic partial gear trains, an input shaft is connected directly to a co-axial gearwheel of the input-end partial gear train and, by means of a drive clutch, to a co-axial gearwheel of the output-end partial gear train. In the input-end partial gear train, two gear elements are connected by means of a lock-up clutch, the planet carrier being still connected with the one co-axial gearwheel of the third partial gear train. In the output-end partial gear train, the planet carrier is directly connected to an output shaft and the outer co-axial gearwheel is connected to a forward gear brake. In the third partial gear train, the planet carrier is connected both to the co-axial gearwheel of the output-end partial gear train, which can be connected to the input shaft, and to a reverse gear brake and the other co-axial gearwheel can be brought, by means of a second drive clutch, into drive connection with the co-axial gearwheel, of the output-end partial gear train, connected to the forward gear brake.

REFERENCES:
patent: 3811343 (1974-05-01), Mori et al.
patent: 3863524 (1975-02-01), Mori et al.
patent: 5112285 (1992-05-01), Hall, III

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