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:
Oct. 29, 2013
Filed:
Oct. 30, 2009
Tetsushi Saitoh, Shizuoka, JP;
Tetsushi Saitoh, Shizuoka, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka, JP;
Abstract
An engine unit includes a multi-speed transmission provided with a plurality of clutches, and enables assembly and maintenance of clutches and a sprocket wound with a drive chain to be easily performed. In an engine unit chassis, a drive shaft arranged to output a drive to a rear wheel via a sprocket provided at one end in the lateral direction, and a second main shaft are arranged parallel or substantially parallel to a crankshaft provided in approximately a lateral direction of the vehicle. A second clutch that transfers rotation power from the crankshaft to the second main shaft is detachably connected to one of the second main shaft, which projects from the engine unit chassis beyond one end of the drive shaft, in a position to overlap with at least portion of the sprocket axially sideways with respect to the drive shaft.