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:
Dec. 29, 2009
Filed:
Feb. 06, 2007
Toshiyasu Yamaguchi, Yamato, JP;
Toshiyasu Yamaguchi, Yamato, JP;
JATCO Ltd, Fuji-sji, JP;
Abstract
In a control device for a continuously variable transmission comprising a controller for controlling the speed ratio of a belt continuously variable transmission via an actuator, the continuously variable transmission is capable of selecting a first speed ratio icorresponding to a biggest speed ratio and a second speed ratio ithat is smaller than the first speed ratio as a startup speed ratio. The controller switch the second speed ratio to the first speed ratio when the rotation speed of a primary side pulley falls to a predetermined rotation speed Nt during vehicle deceleration, even if the second speed ratio has been selected, and switches the first speed ratio to the second speed ratio when the rotation speed of the primary side pulley rises to the predetermined rotation speed during vehicle startup.