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:
Mar. 16, 1993
Filed:
Sep. 05, 1990
Hiromichi Kimura, Toyota, JP;
Kunihiro Iwatsuki, Toyota, JP;
Hideaki Otsubo, Toyota, JP;
Yukihiro Kobayashi, Obu, JP;
Kazunori Ishikawa, Toyota, JP;
Takuji Taniguchi, Okazaki, JP;
Aisin AW Co., Ltd., Anjo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A shift control system for an automatic transmission including a first transmission assembly for changing gear ratios in accordance with the release or engagement of a first frictional engagement system and a second transmission assembly connected in series to the first transmission assembly for changing gear ratios in accordance with the engagement or release of a second frictional engagement system. It includes a decision system for deciding whether or not the automatic transmission should execute the gear changes and a time lag controller for making the time lag for the second frictional engagement system to be engaged shorter than the time lag for the second frictional engagement system to be engaged for another gear change when the automatic transmission is to execute the gear changes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile