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:
Jul. 12, 2005
Filed:
Sep. 04, 2003
Masahiro Yamamoto, Kanagawa, JP;
Midori Yamaguchi, Kanagawa, JP;
Toshiji Iida, Kanagawa, JP;
Tatsuo Wakahara, Kawasaki, JP;
Makoto Sawada, Kanagawa, JP;
Masahiro Yamamoto, Kanagawa, JP;
Midori Yamaguchi, Kanagawa, JP;
Toshiji Iida, Kanagawa, JP;
Tatsuo Wakahara, Kawasaki, JP;
Makoto Sawada, Kanagawa, JP;
Jatco Ltd., Fuji, JP;
Abstract
In a V-belt type CVT, an actual-shift-ratio corresponding operated position of a step motor is calculated through conversion of an actual shift ratio expressed by the rotational-speed ratio between primary and secondary pulleys. A displacement amount is calculated between the actual-shift-ratio corresponding operated position of the step motor and an actual position thereof. A correction amount of the line pressure is calculated to reduce the displacement amount, and the line pressure is corrected in accordance therewith.