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. 11, 2000
Filed:
May. 11, 1999
Applicant:
Inventor:
Shigeki Kondo, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
477125 ; 477906 ;
Abstract
In an electronically controlled automatic transmission, when it determines that the position of the selector lever is located at a position other than a neutral position, it compares the time varying ratio of the number of revolutions of the output shaft with a first prescribed value, and when it determines that the time varying ratio is greater than the first prescribed value, a control device performs a temporary gear change prohibiting process to temporarily prohibit a gear change of the automatic transmission. Accordingly, an abnormal state of an output shaft revolution sensor can be sensed without the provision of a vehicle speed reed switch.