The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 25, 2006

Filed:

Jun. 07, 2004
Applicant:

Nobuyuki Imai, Wako, JP;

Inventor:

Nobuyuki Imai, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 3/14 (2006.01); H02P 3/18 (2006.01);
U.S. Cl.
CPC ...
Abstract

To provide a power transmission device that can increase the range of speed variation between an engine and a power output shaft and effectively achieve reduction in size and cost of the device arrangement. The speed reduction ratios from an engineto first output shaftof first and second power distributorsare different from each other. A speed change unitis provided between the first output shaftof the first power distributorand a power output shaftlinked with driving wheelsof the vehicle, and rotation transmission therebetween is achieved at a plurality of stages of speed reduction ratio. The rotation transmission from the first output shaftof the second power distributorto the power output shaftis achieved via gearsor rotation transmission mechanismsof a speed change unitat a plurality of stages of speed reduction ratio. The vehicle runs at a variable speed using the power from the enginewhile motorsandapply a driving torque or regenerative torque to a second output shaftof the first power distributorand a second output shaftof the second power distributor, respectively.


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