Hybrid transmissions having three motor/generators and three...

Details Hybrid transmissions having three motor/generators and three... Hybrid transmissions having three motor/generators and three...

2008-05-13

2008-05-13

Le, David D. (Department: 3681)

Planetary gear transmission systems or components

Input from independent power sources

Including electric motor input

C475S275000, C475S329000, C475S330000, C180S065230, C180S065510, C180S065700

Reexamination Certificate

active

07371201

ABSTRACT:
The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery and three electric machines serving interchangeably as motors or generators. The three motor/generators are operable in a coordinated fashion to yield an EVT with a continuously variable range of speeds (including reverse).

REFERENCES:
patent: 5558595 (1996-09-01), Schmidt et al.
patent: 5931757 (1999-08-01), Schmidt
patent: 6478705 (2002-11-01), Holmes et al.
patent: 6527658 (2003-03-01), Holmes et al.
patent: 2001/0024997 (2001-09-01), Sugano et al.
patent: 2005/0082992 (2005-04-01), Aizawa et al.
patent: 2007/0049439 (2007-03-01), Garnett

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