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:
Feb. 19, 2013
Filed:
Jul. 30, 2010
Akihiro Yamamoto, Isehara, JP;
Kazuaki Aota, Sagamihara, JP;
Yukiyoshi Inuta, Sagamihara, JP;
Naoki Kobayashi, Machida, JP;
Kouichi Iizuka, Fuji, JP;
Takayuki Okuda, Atsugi, JP;
Peter Tenberge, Chemnitz, DE;
Joerg Mueller, Chemnitz, DE;
Rico Resch, Wilsdruff, DE;
Akihiro Yamamoto, Isehara, JP;
Kazuaki Aota, Sagamihara, JP;
Yukiyoshi Inuta, Sagamihara, JP;
Naoki Kobayashi, Machida, JP;
Kouichi Iizuka, Fuji, 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 comprising: a first planetary gearset of a double pinion; a second planetary gearset of a single pinion; a third planetary gearset of the single pinion, first sun gear and second sun gear being at all times linked together to constitute a first rotary member and second ring gear and third sun gear being at all times linked together to constitute a second rotary member; an input shaft; an output shaft; a first frictional element; a second frictional element; a third frictional element; a fourth frictional element; a fifth frictional element; a sixth frictional element, the six frictional elements being appropriately released or engaged to make a gear shift to a gear shift stage of at least eight forward speeds and, from among the six frictional elements, a combination of simultaneous engagements of three frictional elements achieving at least eight forward speed and one reverse speed.