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. 04, 1998
Filed:
Mar. 28, 1996
Applicant:
Inventors:
Minoru Kuriyama, Higashihiroshima, JP;
Kazuo Sasaki, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
477 71 ; 477 76 ; 477 72 ; 477 98 ;
Abstract
An automatic transmission control system in which a specific one of friction coupling elements is selectively locked and unlocked to provide a specific gear initiates locking the specific friction coupling element to execute a gear shift to the specific gear at a level of input torque to the automatic transmission from the torque converter higher when a friction-related parameter demonstrates a high friction coefficient of the coupling element than when demonstrating a low friction coefficient.