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:
Jun. 07, 2011
Filed:
Mar. 29, 2007
Takaaki Kato, Anjo, JP;
Tsuyoshi Fukaya, Kariya, JP;
Akihito Hongoya, Okazaki, JP;
Hiroyuki Tsukamoto, Chiryu, JP;
Masafumi Kinoshita, Toyota, JP;
Masaru Morise, Nakata-gun, JP;
Takaaki Kato, Anjo, JP;
Tsuyoshi Fukaya, Kariya, JP;
Akihito Hongoya, Okazaki, JP;
Hiroyuki Tsukamoto, Chiryu, JP;
Masafumi Kinoshita, Toyota, JP;
Masaru Morise, Nakata-gun, JP;
Aisin AW Co., Ltd., Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
An automatic transmission is provided having appropriately spaced gear ratios for eight forward speeds to be capable of obtaining a shift feeling in all of the eight speeds, and is reduced in size and weight. Rotation of an input shaft is transmitted to an output shaft at a speed selected from a plurality of shift speeds by first and second clutches selectively transmitting the rotation of the input shaft to first and second compound planetary gears, and by first to fourth brakes selectively fixing each element of the first and second compound planetary gears, the first compound planetary gear includes first and second sun gears, a common carrier rotatably supporting a long pinion and a pinion, and a common ring gear that meshes with the first sun gear through the long pinion or the pinion and also meshes with the second sun gear through the long pinion and the pinion.