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. 16, 2005
Filed:
Aug. 07, 2003
Hideki Miyata, Okazaki, JP;
Yasuo Hojo, Nagoya, JP;
Yoshihiro Iijima, Seto, JP;
Naoyuki Fukaya, Okazaki, JP;
Haruki Yamamoto, Anjo, JP;
Fuminori Suzuki, Okazaki, JP;
Hideki Miyata, Okazaki, JP;
Yasuo Hojo, Nagoya, JP;
Yoshihiro Iijima, Seto, JP;
Naoyuki Fukaya, Okazaki, JP;
Haruki Yamamoto, Anjo, JP;
Fuminori Suzuki, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A switching valve is provided which operates hydraulic friction engaging elements in a combination to establish a fifth speed '5th' when in a first position, and in a combination to establish a third speed '3rd' when in a second position, when a first electromagnetic valve to a fifth electromagnetic valve fail so as to stop operating. As a result, in the event of failure while driving, the fifth speed “5th” is first established to enable the vehicle to continue running. Then, when the position of a manual valve is changed by an operation by the driver when the vehicle is stopped or the like, the switching valve shifts a transmission into the third speed “3rd”, which has a larger gear ratio than the fifth speed “5th”, to ensure the driving force required to take off again.