Automatic transmission requiring operation of single friction de

Details Automatic transmission requiring operation of single friction de Automatic transmission requiring operation of single friction de

1998-11-16

2000-01-18

Marmor, Charles A.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475283, 475285, 475287, 475338, P16H 362

Patent

active

060153636

ABSTRACT:
An automatic transmission comprising a housing (12); a planetary gear train (14) mounted within the housing; an input drive shaft (16) for providing input drive to the planetary gear train; an output drive shaft (18) connected with an output drive from the planetary gear train; a first clutch (C1) connected between the input drive shaft and a first drive input (22) to the planetary gear train; a second clutch (C2) connected between a first reaction input (28) to the planetary gear train and the housing; a third clutch (C3) connected between a second reaction input (30) to the planetary gear train and the housing; a fourth clutch (C4) connected between a third reaction input (32) to the planetary gear train and the housing; and a fifth clutch (C5) connected between a second drive input (24) to the planetary gear train and the input drive shaft; wherein for first forward gear ratio the first and second clutches are engaged; for second forward gear ratio the first, second and third clutches are engaged; for third forward gear ratio the first, second, third and fourth clutches are engaged; and for fourth forward gear ratio the first, second, third, fourth and fifth clutches are engaged. Allows gear shift by the operation of a single clutch.

REFERENCES:
patent: 3626788 (1971-12-01), Smalinskas
patent: 4242924 (1981-01-01), Melhorn et al.
patent: 4304153 (1981-12-01), Moroto et al.
patent: 4916980 (1990-04-01), Asada et al.
patent: 4938096 (1990-07-01), Takahashi et al.
patent: 5495778 (1996-03-01), Mochizuki
patent: 5700223 (1997-12-01), Park et al.

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