Breather structure for internal combustion engine

Details Breather structure for internal combustion engine Breather structure for internal combustion engine

2007-03-27

2010-06-29

Cuff, Michael (Department: 3741)

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

C123S041860, C123S572000, C123S573000

Reexamination Certificate

active

07743758

ABSTRACT:
A breather structure for internal combustion engine, the structure making a breather chamber smaller and thus making an internal combustion engine as a whole smaller. A breather chamber and a small chamber are formed. The breather chamber includes a first side face cover. The first side face cover is joined to a case to cover a first one of the right and left side faces of the case. Inside the first side face cover, an auxiliary apparatus chamber is formed. The auxiliary apparatus chamber houses a clutch mechanism connecting or disconnecting the power transmission route. Additionally, formed inside a housing are an external communication port communicating to the outside of the housing, and the small chamber communicating to a crank chamber and to the auxiliary apparatus chamber. Moreover, the auxiliary apparatus chamber communicates to the breather chamber.

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patent: 6598595 (2003-07-01), Yasui
patent: 6651635 (2003-11-01), Kunimitsu et al.
patent: 7051721 (2006-05-01), Tomita et al.
patent: 7055509 (2006-06-01), Hara
patent: 2-22451 (1990-02-01), None

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