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:
Apr. 11, 2000
Filed:
Apr. 30, 1997
Shusaku Katakura, Kanagawa, JP;
Hisaaki Toujima, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A lockup control apparatus for use with an automotive vehicle including an engine, an automatic transmission and a torque converter having a lockup clutch operable on a variable engagement force to provide a controlled degree of mechanical connection between the engine and the automatic transmission during deceleration. The lockup engagement force is set at a target value substantially equal to a first value calculated based on vehicle operating conditions plus a second value calculated based on engine output at a first stage of lockup control operation when the engine output remains positive after the driver's operation is detected and it is decreased at a predetermined rate to the first value at a second stage of lockup control operation after the engine output becomes negative.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile