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:
Jan. 17, 2012
Filed:
Mar. 25, 2010
Kazuaki Aota, Sagamihara, JP;
Yukiyoshi Inuta, Sagamihara, JP;
Akihiro Yamamoto, Isehara, JP;
Naoki Kobayashi, Machida, JP;
Takayuki Okuda, Atsugi, JP;
Peter Tenberge, Chemnitz, DE;
Joerg Mueller, Chemnitz, DE;
Rico Resch, Wilsdruff, DE;
Kazuaki Aota, Sagamihara, JP;
Yukiyoshi Inuta, Sagamihara, JP;
Akihiro Yamamoto, Isehara, JP;
Naoki Kobayashi, Machida, JP;
Takayuki Okuda, Atsugi, JP;
Peter Tenberge, Chemnitz, DE;
Joerg Mueller, Chemnitz, DE;
Rico Resch, Wilsdruff, DE;
Jatco Ltd, Fuji-shi, JP;
Abstract
An automatic transmission including three single pinion planetary gearsets and six friction elements, in which an input shaft is always connected to a first sun gear of a first planetary gearset, the output shaft is always connected to a second ring gear of a second planetary gearset, a third sun gear of a third planetary gearset is always kept in a fixed state relative to a transmission case of the automatic transmission, a first ring gear of the first planetary gearset and a third pinion carrier of the third planetary gearset are always connected to each other and constitute a first rotary member, and at least eight forward speeds and one reverse speed are respectively established by simultaneous engagements of three friction elements selected from the six friction elements.