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:
Dec. 02, 2008
Filed:
May. 25, 2006
Kazuo Oguri, Hiroshima, JP;
Hideo Kawamatsu, Hiroshima, JP;
Kazuo Oguri, Hiroshima, JP;
Hideo Kawamatsu, Hiroshima, JP;
Jatco Ltd, Shizuoka, JP;
Abstract
An automatic transmission includes a planetary gear train of first, second, third and fourth planetary gears; an input rotation member connected with a ring gear of the second planetary gear; and a first connection member connecting a carrier of the second planetary gear and a ring gear of the fourth planetary gear. A first rotation sensor senses the rotation speed of the first connection member. A second rotation sensor senses the rotation speed of one rotating element of the first and second planetary gears. A processing section calculates an input speed of the automatic transmission from the rotation speeds sensed by the first and second rotation sensors.