Twin-clutch type transmission unit for engine, and motorcycle incorporating the same

US8935970B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8935970-B2
Application numberUS-201113164132-A
CountryUS
Kind codeB2
Filing dateJun 20, 2011
Priority dateJun 24, 2010
Publication dateJan 20, 2015
Grant dateJan 20, 2015

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Abstract

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A twin-clutch type transmission unit includes inner and outer shafts provided respectively with first and second disc clutches for transmission and interruption of input from a prime mover, a plurality of drive gears provided on the inner and outer shafts, and a counter shaft provided with driven gears selectively operable to mesh with the drive gears, with the first and second disc clutches of the inner and outer shafts being alternately disengaged and engaged so as to perform a gear shift. In the transmission unit, a dog-type clutch for synchronizing rotations of the inner shaft and the outer shaft is provided. At the time of vehicle starting, the inner and outer shafts are connected with each other, and the first and second disc clutches of both the inner and outer shafts are engaged. Such transmission unit contrives reductions in the size and weight of a twin-clutch type transmission unit.

First claim

Opening claim text (preview).

What is claimed is: 1. A twin-clutch type transmission unit comprising a first clutch and a second clutch; a first input shaft and a second input shaft provided respectively with said clutches for transmission and interruption of input from a prime mover; a plurality of drive gears provided on the first and second input shafts; an output shaft provided with a plurality of driven gears operable to selectively mesh with the drive gears, with the clutches of the first input sha…

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What does patent US8935970B2 cover?
A twin-clutch type transmission unit includes inner and outer shafts provided respectively with first and second disc clutches for transmission and interruption of input from a prime mover, a plurality of drive gears provided on the inner and outer shafts, and a counter shaft provided with driven gears selectively operable to mesh with the drive gears, with the first and second disc clutches of…
Who is the assignee on this patent?
Tanaka Masataka, Watanabe Junya, Honda Motor Co Ltd
What technology area does this patent fall under?
Primary CPC classification F16H61/688. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue Jan 20 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).