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:
Aug. 27, 2013
Filed:
Jun. 20, 2007
Yusuke Ogata, Toyota, JP;
Yoshinobu Soga, Toyota, JP;
Ryoji Habuchi, Okazaki, JP;
Hideki Yasue, Toyota, JP;
Hirofumi Nakada, Toyota, JP;
Yusuke Ogata, Toyota, JP;
Yoshinobu Soga, Toyota, JP;
Ryoji Habuchi, Okazaki, JP;
Hideki Yasue, Toyota, JP;
Hirofumi Nakada, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aici-ken, JP;
Abstract
In a vehicular belt-driven continuously variable transmission, belt squeezing force is inhibited from becoming excessive and a safety factor, with respect to belt slip, of belt squeezing force applied to a transmission belt () is reduced to a value that is less than or equal to 1.5 by reducing a pressure receiving area (S) of an output side hydraulic cylinder (). As a result, a centrifugal hydraulic pressure canceller chamber on a secondary pulley side () can be eliminated thus simplifying the structure of the vehicular belt-driven continuously variable transmission, while belt squeezing force can be appropriately controlled.