Five-speed power transmission

Details Five-speed power transmission Five-speed power transmission

1997-06-05

1998-11-03

Wright, Dirk

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475289, F16H 358

Patent

active

058301020

ABSTRACT:
A multi-speed power transmission has five forward speeds and one reverse speed. The forward speeds consist of three underdrives, a direct drive and one overdrive. These speed ratios are produced with a simple planetary gearset, a compound planetary gearset, three input clutches, a combining clutch, a one-way clutch and two brake assemblies. Each of the brake assemblies incorporates a friction brake and a one-way brake. The combining clutch is disengaged in the low forward and reverse ratios and is engaged to connect the ring gears of the compound set with the carrier of the simple set. The one-way clutch is disposed between the ring gears of both sets to transmit rotation therebetween in an active capacity in the low forward ratio and no load capacity in the reverse ratio. In the second through fifth forward speeds, the one-way clutch permits relative rotation between the ring gears. The ring gear of the simple planetary gearset is continuously connected with the output shaft.

REFERENCES:
patent: 3597999 (1971-08-01), Fisher
patent: 5141477 (1992-08-01), Oshidari
patent: 5525117 (1996-06-01), Morisawa et al.
patent: 5567201 (1996-10-01), Ross

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