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:
Aug. 03, 2010
Filed:
Mar. 30, 2006
Yoshiaki Hori, Saitama, JP;
Toshiyuki Sato, Saitama, JP;
Eiji Kittaka, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An automatic transmission that includes oil passages with a simple structure provided for twin clutches can allow the number of production steps to be reduced. The automatic transmission includes a number of gear trains equal to the number of speeds between a primary shaft and a countershaft. The automatic transmission performs connection and disconnection of a rotational driving force between a crankshaft and a gearbox by means of twin hydraulic clutches including first and second clutches, which are made of the same components and disposed on the axis of the primary shaft back to back. Oil passages can be formed into a more simple shape and can be configured to have the same total length. The first clutch performs connection and disconnection for first and third speeds, and the second clutch performs connection and disconnection for second and fourth speeds.