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:
Mar. 19, 2002
Filed:
Jun. 01, 2000
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An output shaft ( ) of a continuously variable transmission ( ) is joined to a sun gear ( A) of a planetary gear mechanism ( ), and joined to a final output shaft ( ) via a direct mode clutch ( ). An output shaft ( C) of a fixed speed ratio transmission ( ) is joined to a planet carrier ( B) of the planetary gear mechanism ( ) via a power recirculation mode clutch ( ). Oil pressure supply to the direct mode clutch ( ) and power recirculation mode clutch ( ) is controlled by a controller ( ) via a mode fixing valve ( ). A cam ( ) which moves in synchronism with a trunnion ( ) of the continuously variable transmission ( ) locks the mode fixing valve ( ) in a position which shuts off oil supply to one of the clutches ( ), ( ) when the speed ratio of a continuously variable transmission ( ) is smaller than a predetermined value lcC, and releases the lock when the speed ratio of the continuously variable transmission ( ) is larger than the predetermined value lcC.