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:
Jun. 20, 2000
Filed:
Dec. 01, 1998
Suguru Futamura, Toyokawa, JP;
Masato Shimei, Nagoya, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A lock-up control method of an automatic transmission for making the optimum lock-up control correspond to a shift control. In the lock-up control method of the automatic transmission in which the fastening force of a lock-up clutch is temporarily dropped to cause the lock-up clutch to slip in shifting the automatic transmission, the maximum value of a rate of change of speed of an input element is found while shifting the automatic transmission, the fastening force of the lock-up clutch is corrected so that a deviation between the maximum value and a target rate of change of speed of the input element is zeroed and the lock-up clutch is fastened by the corrected fastening force in the next shift.