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:
Jun. 09, 1992
Filed:
Feb. 02, 1990
Toshiyuki Asada, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An automatic transmission wherein a gear train is constituted by three single pinion type planetary gear sets, provided with a first planetary gear set having a first sun gear, a first ring gear, and a first carrier holding pinion gears meshing with the first sun gear and the first ring gear, a second planetary gear set having a second sun gear, a second ring gear which is normally or selectively connected with the first carrier, and a second carrier holding pinion gears meshing with the second sun gear and the second ring gear, a third planetary gear set having a third sun gear normally or selectively connected to the second carrier, a third ring gear which is continuously connected with the first carrier, and a third carrier holding pinion gears meshing with the third sun gear and the third ring gear and connected to the output shaft, a first clutch means which selectively connects the input shaft and the first ring gear, a second clutch means which selectively connects the first sun gear and the second carrier, a third clutch means which selectively connects the input shaft and the first sun gear, a fourth clutch means which selectively connects the first sun gear and the second sun gear, a first brake means which selectively stops the rotation of at least the third sun gear among the second carrier and the third sun gear, a second brake means which selectively stops the rotation of the first sun gear, and a third brake means which selectively stops the rotation of the second sun gear, at least five forward speeds and one reverse speed being settable as transmission stages.