Multi-speed transmission

Details Multi-speed transmission Multi-speed transmission

2011-06-21

2011-06-21

Le, David D (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

Reexamination Certificate

active

07963876

ABSTRACT:
A multi-speed transmission offers seven forward speed ratios with a pleasing ratio step progression, with the seventh forward speed ratio offering a relatively large percentage of the ratio spread, relatively low pinion speeds and only light torque loading on gear members carrying torque in the seventh forward speed ratio due to a brake-type torque transmitting mechanism engaged in the seventh forward speed ratio.

REFERENCES:
patent: 5106352 (1992-04-01), Lepelletier
patent: 5133697 (1992-07-01), Hattori
patent: 2004/0266581 (2004-12-01), Stevenson
patent: 2005/0037889 (2005-02-01), Hayabuchi et al.
patent: 2005/0227806 (2005-10-01), Klemen et al.

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