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:
Aug. 17, 1999
Filed:
Jul. 08, 1997
Yasuo Sumi, Kanagawa, JP;
JATCO Corporation, Fuji, JP;
Abstract
A speed change gear mechanism of an automatic transmission comprising first, second and third planetary gear units each including a sun gear, a ring gear, a single pinion meshed with both the sun gear and the ring gear and a pinion carrier for carrying the pinion. The pinion carrier of the first unit is united with the ring gear of the third unit. The ring gear of the second unit is united with the pinion carrier of the third unit. A first clutch is arranged between the ring gear of the first unit and the ring gear of the second unit. A second clutch or direct connecting member is arranged between the sun gear of the second unit and the sun gear of the third unit. A third clutch is arranged between the sun gear of the third unit and the pinion carrier of the third unit. A first brake is used for stopping rotation of the ring gear of the second unit and the pinion carrier of the third unit which are united. A second brake is used for stopping rotation of the sun gear of the first unit. A third brake is used for stopping the sun gear of the second unit. An input shaft is connected to the ring gear of the first unit to rotate therewith. An output shaft is connected to the pinion carrier of the second unit to rotate therewith.