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:
Jul. 13, 2010
Filed:
Feb. 19, 2008
Masaki Kobayashi, Saitama, JP;
Seiji Hamaoka, Saitama, JP;
Kinya Mizuno, Saitama, JP;
Eiji Kittaka, Saitama, JP;
Yusuke Funayose, Saitama, JP;
Kazuhiko Sakaguchi, Saitama, JP;
Hiroshi Tanaka, Saitama, JP;
Masaki Kobayashi, Saitama, JP;
Seiji Hamaoka, Saitama, JP;
Kinya Mizuno, Saitama, JP;
Eiji Kittaka, Saitama, JP;
Yusuke Funayose, Saitama, JP;
Kazuhiko Sakaguchi, Saitama, JP;
Hiroshi Tanaka, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An automatic transmission assembly having a transmission unit including a plurality of gear pairs, a shift drum, a pair of clutches; and a controller. The controller performs a preliminary upshifting action in advance for angularly moving the shift drum depending on a next gear position in an upshifting direction while rotary drive power is being maintained at a given gear position, and when an upshifting command is output, the controller engages one of the clutches simultaneously with the command. When a downshifting command is output, the controller performs a preliminary downshifting action in advance based on the downshifting command. The partially neutral positions are provided between predetermined angular positions on the shift drum for temporarily reducing the angular speed of the shift drum when the shift drum is being angularly rotated.