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:
Apr. 29, 2008
Filed:
Feb. 14, 2003
Yoji Utsumi, Shizuoka, JP;
Masahiro Ito, Shizuoka, JP;
Yoji Utsumi, Shizuoka, JP;
Masahiro Ito, Shizuoka, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka, JP;
Abstract
An engine lubrication system in which a transmissionhaving a main shaftand a drive shafteach having a plurality of change-speed gears mounted thereon is arranged within a separate-type crankcase which is separated into left and right case portions, characterized in that a connecting boltfor connecting the left and right case portionstogether is inserted to be disposed in the vicinity of the main shaftor the drive shaftand in parallel with the shafts, in that left and right boss portionshaving bolt boresinto which the connecting boltfor connecting the left and right case portionstogether is inserted are extended in a tubular fashion so as to abut with each other face-to-face, in that a space between an inner circumferential surface of the bolt borein the left and right boss portionsand an outer circumferential surface of the connecting boltis made to constitute a lubricating oil passageway, in that an end of the lubricating oil passagewayis connected to a lubricating oil supply source, and in that lubricating oil supply holesdirected to the change-speed gears of the transmission are formed in the boss portionsin such a manner as to branch off from the lubricating oil supply passageway
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile