Automatic transmission

Details Automatic transmission Automatic transmission

2011-05-24

2011-05-24

Pang, Roger (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S290000

Reexamination Certificate

active

07946947

ABSTRACT:
In single pinion planetary gear mechanisms, a second sun gear is linked to an input shaft in a power-transmissible manner, a first sun gear is linked to a third control brake, and a first carrier and a second ring gear which are linked to each other are linked to a first control brake. In single pinion planetary gear mechanisms, a third sun gear and a fourth sun gear which are linked to each other are linked to the input shaft disengageably by a first control clutch, and a third ring gear and a fourth ring gear are linked to a second control brake and a fourth control brake, respectively. Furthermore, in the single pinion planetary gear mechanisms, a third carrier is linked to the input shaft disengageably by a second control clutch and a fourth carrier is linked to an output shaft.

REFERENCES:
patent: 3941013 (1976-03-01), Miller
patent: 4683776 (1987-08-01), Klemen
patent: 6524208 (2003-02-01), Hollermann et al.
patent: 7163484 (2007-01-01), Klemen
patent: 7364527 (2008-04-01), Klemen
patent: 2004/0102278 (2004-05-01), Usoro et al.
patent: 2006/0019791 (2006-01-01), Baldwin
patent: 2002-213545 (2002-07-01), None

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