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.:

US 6834643 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 28, 2004

Filed:

Oct. 07, 2003
Applicant:
Inventors:

Yoshiaki Hori, Saitama, JP;

Kinya Mizuno, Saitama, JP;

Hideyuki Tawara, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01M 1/304 ;
U.S. Cl.
CPC ...
F01M 1/304 ;
Abstract

An overhead-valve internal combustion engine with a breather chamber arranged below a camshaft housing chamber for housing the camshaft and formed between a cylinder head and a cylinder block. A driving force transmission chamber is formed between a cylinder and a crankcase. Thus, the discharge of oil from the breather chamber is performed smoothly so as to enhance the vapor-liquid separation performance. A breather inlet passage has an upper end thereof in communication with an inside of a camshaft housing chamber and a lower end thereof in communication with a breather chamber at a position corresponding to a mating face between a cylinder block and a crankcase is formed in the cylinder block such that the breather inlet passage extends vertically. An oil discharge hole is in communication with a lower portion of the inside of the breather chamber and is formed in the crankcase.


Find Patent Forward Citations

Loading…