Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Mechanically coupled in fixed ratio of movement
Reexamination Certificate
2007-10-09
2007-10-09
Masih, Karen (Department: 2837)
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Mechanically coupled in fixed ratio of movement
C318S727000, C318S778000, C318S800000, C318S801000
Reexamination Certificate
active
10544304
ABSTRACT:
A vehicle electric drive system and a hybrid engine-motor type vehicle drive system realizing simplification and miniaturization of electric parts and, moreover, reduction in cost while maintaining performances can be provided. A part1of wheels is driven by an engine. The wheels are driven by a motor as necessary. The motor, a generator, and an accessory battery are connected to each other via a voltage step-up/step-down device. The voltage step-up/step-down device has a function of stepping up power of the battery and supplying the stepping up power to the motor, and a function of stepped down power of the generator and supplying the stepped down power to the battery and the accessories.
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Fujino Shin-ichi
Innami Toshiyuki
Nishidate Keisuke
Shimizu Hisaya
Tahara Kazuo
Crowell & Moring LLP
Hitachi , Ltd.
Hitachi Car Engineering Co. Ltd.
Masih Karen
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