Planetary gear transmission

Details Planetary gear transmission Planetary gear transmission

1996-02-05

1997-11-25

Marmor, Charles A.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475280, 475285, F16H 344

Patent

active

056905793

ABSTRACT:
A planetary gear transmission comprises a first planetary gear train of double pinion type G1 and second and third planetary gear trains of single pinion type G2 and G3 disposed coaxially and in parallel with one another. In this transmission, a first sun gear S1 is coupled to an input member 11 through a first clutch K1, and a first brake B1 is provided for the purpose of selectively holding the first sun gear S1 against rotation. First and second carriers C1 and C2 and a third ring gear R3 are coupled to one another, and these three elements are coupled to the input member 11 through a second clutch K2, and a second brake B2 is provided for the purpose of selectively holding these three elements against rotation. A first ring gear R1 and a second ring gear R2 are coupled with each other, and a third brake B3 is provided for the purpose of selectively holding these two elements against rotation. Second and third sun gears S2 and S3 are coupled with each other, and these two elements are coupled to the input member 11 through a third clutch K3. A third carrier C3 is directly coupled to an output member 12.

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European Search Report Application No. EP 96 30 0748 Completion Date 26 Apr. 1996.
English language Abstract of JP 1-320362.

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