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:
Feb. 11, 2003
Filed:
Jul. 23, 2001
Makoto Yamazaki, Susono, JP;
Toshifumi Takaoka, Susono, JP;
Naoto Suzuki, Fujinomiya, JP;
Takashi Suzuki, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An apparatus and method determine a state of a power train that includes a power transmission apparatus that is configured to transmit power of a first driving power source to an input side of a second driving power source via a clutch and a transmission, and is capable of changing a torque capacity of the clutch and a gear ratio of the transmission. The apparatus and method determine a state of the clutch or the transmission based on a revolution speed of the first driving power source and information indicating a state of the second driving power source, e.g., a revolution speed of the input side of the second driving power source.