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:
Oct. 19, 1999

Filed:

Jul. 20, 1998
Applicant:
Inventors:

Takayuki Okawada, Saitama, JP;

Naoki Nozaki, Saitama, JP;

Masahiro Kawamata, Saitama, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02B / ; F02M / ; F01M / ; F01M / ;
U.S. Cl.
CPC ...
123572 ;
Abstract

To improve the low-temperature resistance of a blow-by gas treatment device. An air cleaner is connected through a carburetor to the intake side of a cylinder portion constituting an engine in a four-wheel buggy. A blow-by gas induction pipe is provided to connect a crankcase and one side surface of the air cleaner, so as to induce a blow-by gas from the crankcase to a return chamber defined in the air cleaner at one side portion thereof. An exhaust pipe extends rearwardly from the exhaust side of the cylinder portion along a part of the induction pipe, and is connected to a muffler. The muffler is located in the vicinity of the return chamber in the air cleaner, so as to warm the return chamber by the heat radiated from the muffler, thereby ensuring good returnability of the blow-by gas even at low temperatures. The exhaust pipe similarly warms the induction pipe.


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