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.
Patent No.:
Date of Patent:
Feb. 08, 2005
Filed:
Jul. 23, 2002
Masaki Nakano, Yokohama, JP;
Toshikazu Oshidari, Yokosuka, JP;
Keyvan Kargar, Paris, FR;
Joel Poupon, Paris, FR;
Masaki Nakano, Yokohama, JP;
Toshikazu Oshidari, Yokosuka, JP;
Keyvan Kargar, Paris, FR;
Joel Poupon, Paris, FR;
Nissan Motor Co., Ltd., Yokohama, JP;
Renault SA, , FR;
Abstract
A four-element, two-freedom-degree planetary gear mechanism is constructed by arraying four input/output elements of a sun gear S, a ring gear R, a carrier C and a sun gear Sin a alignment chart. One of the two elements R and C arrayed on the inner side is assigned to the input In from an engine whereas the other is assigned to the output Out to the drive shaft, and the two outer elements Sand Sare connected to motor-generators MGi and MGo, respectively. As a result, the torque for the motor-generators to bear can be made lower than the engine output, and the energy to pass through the motor-generators is made lower to improve the transmission efficiency of the drivetrain.