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. 22, 2013
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 includes first to third single-pinion planetary gearsets. The second ring gear and third sun gear are coupled to the first carrier and first ring gear respectively to constitute first and second rotor units. Input and output shafts are coupled to the second sun gear and third ring gear respectively. A first clutch selectively holds the first sun gear to the third carrier. A first brake selectively holds the first sun gear stationary. A second clutch selectively holds the second sun gear to the third carrier. A third clutch selectively holds the second carrier to the second rotor unit. A fourth clutch selectively holds the second carrier to the third carrier. A second brake selectively holds the first rotor unit stationary. At least eight gear ratios and one reverse gear ratio are obtained by simultaneous application of three of the clutches and brakes.