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:
May. 08, 2012
Filed:
Apr. 15, 2009
Masanori Shimizu, Toyota, JP;
Ryuji Chida, Toyota, JP;
Takashi Yumoto, Okazaki, JP;
Kenichi Yamaguchi, Chiryu, JP;
Masanori Shimizu, Toyota, JP;
Ryuji Chida, Toyota, JP;
Takashi Yumoto, Okazaki, JP;
Kenichi Yamaguchi, Chiryu, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A control apparatus for a continuously variable transmission includes a clamping force increase portion. The continuously variable transmission includes a pair of a primary pulley and a secondary pulley on which a transmission belt is wound. A shift of the continuously variable transmission is performed by changing effective diameters of the primary pulley and the secondary pulley. The clamping force increase portion increases a belt clamping force when it is determined that a torque capacity is decreased by determining that drive power input to the primary pulley is decreased by an amount equal to or larger than a predetermined amount while the secondary pulley is in a stopped state or a substantially stopped state, as compared to when it is determined that the torque capacity is not decreased.