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.

Date of Patent:
Mar. 17, 2015

Filed:

Oct. 15, 2010
Applicants:

Shigeru Shudo, Wako, JP;

Ryo Saito, Wako, JP;

Noboru Kawaguchi, Wako, JP;

Inventors:

Shigeru Shudo, Wako, JP;

Ryo Saito, Wako, JP;

Noboru Kawaguchi, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01M 13/00 (2006.01); F01M 13/02 (2006.01);
U.S. Cl.
CPC ...
F01M 13/00 (2013.01); F01M 13/022 (2013.01); F01M 13/023 (2013.01); F01M 2013/0044 (2013.01);
Abstract

Breather mechanism includes a breather passage opening into a crankcase, a breather chamber communicating with the crankcase via the breather passage, and a valve provided in the breather chamber and openable to allow blow-by gas to flow from the crankcase into the breather chamber once inner pressure of the crankcase exceeds a predetermined value. When the engine is placed in a laterally laid-down position, entry, into the breather chamber, of lubricating oil is prevented by the breather passage. When the engine is placed in a vertically upright position, an outlet end portion of the breather passage is located above an inlet end portion of the breather passage.


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