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. 24, 2012
Filed:
Nov. 29, 2005
Takao Taniguchi, Toyota, JP;
Kazumasa Tsukamoto, Toyota, JP;
Masahiro Hayabuchi, Anjo, JP;
Akitoshi Katou, Takahama, JP;
Satoru Kasuya, Aichi-ken, JP;
Naoji Katou, Anjo, JP;
Hiroshi Katou, Kariya, JP;
Masashi Kitou, Anjo, JP;
Hiroaki Sanji, Nishio, JP;
Naoki Takabayashi, Susona, JP;
Takao Taniguchi, Toyota, JP;
Kazumasa Tsukamoto, Toyota, JP;
Masahiro Hayabuchi, Anjo, JP;
Akitoshi Katou, Takahama, JP;
Satoru Kasuya, Aichi-ken, JP;
Naoji Katou, Anjo, JP;
Hiroshi Katou, Kariya, JP;
Masashi Kitou, Anjo, JP;
Hiroaki Sanji, Nishio, JP;
Naoki Takabayashi, Susona, JP;
Aisin AW Co., Ltd., Anjo-Shi, Aichi-Ken, JP;
Abstract
A first element of a duplex planetary gear set is selectively coupled to an input shaft via a third clutch, or is selectively fixed via a first brake. A second element is selectively coupled, via a second clutch, to an intermediate shaft that is directly coupled to a speed-increasing element of a simplex planetary gear set which increases the rotational speed of the input shaft, or is selectively fixed via a second brake. A third element is directly coupled to an output shaft. A fourth element is selectively coupled to the input shaft via a first clutch. Therefore, by increasing the speed of the rotation of the input shaft by the simplex planetary gear set and transferring it to the duplex planetary gear set, it is possible to reduce the torques on individual components of an automatic transmission and therefore to reduce the sizes of the individual components and the capacities of the individual friction engagement elements.