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:
Oct. 18, 2005
Filed:
Apr. 02, 2003
Masaaki Nishida, Anjo, JP;
Hiroshi Tsutsui, Anjo, JP;
Kouichi Kojima, Anjo, JP;
Yutaka Teraoka, Anjo, JP;
Masatake Ichikawa, Anjo, JP;
Hidekazu Funakoshi, Anjo, JP;
Masaaki Nishida, Anjo, JP;
Hiroshi Tsutsui, Anjo, JP;
Kouichi Kojima, Anjo, JP;
Yutaka Teraoka, Anjo, JP;
Masatake Ichikawa, Anjo, JP;
Hidekazu Funakoshi, Anjo, JP;
Aisin Aw Co., Ltd., Aichi-ken, JP;
Abstract
A shift control apparatus has first, second, third and fourth engagement elements, and a shift control processing unit engaging the first and the second engagement elements in order to realize a first shift speed, engaging the third and the fourth engagement in order to realize a second shift speed, and inhibiting an increase in torque capacity of one of the first and second engagement elements before starting of release of the second engagement element when shifting from the first to the second shift speed. During shifting from the first to the second shift speed, an increase in torque capacity of one of the first and second engagement elements is inhibited before starting of release of the second engagement element. This prevents a step-like shift shock from being caused by the slowed progression of shifting when release of the second engagement element is started.