Motorcycle engine and assembling method thereof

Details Motorcycle engine and assembling method thereof Motorcycle engine and assembling method thereof

2006-09-21

2009-08-25

Le, David D. (Department: 3655)

Machine element or mechanism

Gearing

Interchangeably locked

C074S337500, C074S60600R, C384S255000

Reexamination Certificate

active

07578213

ABSTRACT:
An engine includes an engine case split into an upper case and a lower case. A crankshaft and a transmission input shaft are rotatably supported at a mating surface between the upper and lower cases, and a transmission output shaft rotated by the transmission input shaft is supported in the lower case. One side face of the lower case has a circular opening through which the transmission output shaft can be inserted from the outside. An eccentric bearing holder holding a bearing that rotatably supports one end of the transmission output shaft is mounted in the opening in a detachable manner from the outside. The axis of the transmission output shaft deviates from the center of the eccentric bearing holder toward the transmission input shaft. The inner diameter of the opening is larger than the outer diameter of the largest one of transmission driven gears of the transmission output shaft.

REFERENCES:
patent: 4035044 (1977-07-01), Miyazaki
patent: 5078105 (1992-01-01), Ito et al.
patent: 5165294 (1992-11-01), Utsumi
patent: 6398400 (2002-06-01), Nienhaus
patent: 6941918 (2005-09-01), Laimboeck
patent: 7275872 (2007-10-01), Abrahamian
patent: 7353792 (2008-04-01), Oda et al.
patent: 2004/0255897 (2004-12-01), Arakawa

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