Split input planetary transmission

Details Split input planetary transmission Split input planetary transmission

1977-01-26

1979-12-18

Wyche, Benjamin W.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74765, 74740, 74753, 74758, F16H 5710

Patent

active

041788133

ABSTRACT:
A planetary transmission of a vehicle drive train comprises an input section including three planetary gear sets and three brakes that are selectively operable to condition the three gear sets for respectively establishing a forward converter drive, a reverse converter drive and a direct drive at an output shaft of the input section. The planetary transmission further comprises an output or range section coupled to the output of the input section. The output section includes three planetary gear sets connected together so as to form a three-stage planetary set and three brakes are respectively associated with the three gear sets and selectively operable to control the three gear sets such that low, intermediate and high output speeds are established for every input to the output section with drive torque being delivered by all three gear sets for low speed operation, by two gear sets for intermediate speed operation and by a single gear set for high speed operation.

REFERENCES:
patent: 658620 (1900-09-01), Clarke et al.
patent: 3863524 (1975-02-01), Mori et al.
patent: 3877320 (1975-04-01), Iijima
patent: 3941013 (1976-03-01), Miller
patent: 3946623 (1976-03-01), Murakami et al.

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