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 8109084 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 07, 2012

Filed:

Mar. 26, 2008
Applicants:

Kenji Morita, Saitama, JP;

Yuichi Tanaka, Saitama, JP;

Inventors:

Kenji Morita, Saitama, JP;

Yuichi Tanaka, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An exhaust throttle valve protected from disturbance due to stones scattered during operation of a vehicle. Front side exhaust pipes and rear side exhaust pipes are connected to a catalyst chamber disposed below a crankcase. The catalyst chamber and an exhaust chamber disposed to the rear thereof are connected to each other via a rear exhaust pipe. The diameter of the rear exhaust pipe is smaller than the lateral width of each of the catalyst chamber and the exhaust chamber, so that a recessed space is externally formed so as to recede inside of the vehicle. An exhaust throttle valve is received in the space. The exhaust throttle valve is partially exposed to the outside of the rear exhaust pipe and a throttle valve is received in the rear exhaust pipe to throttle-control the passage-sectional area of the rear exhaust pipe according to the rotation of the engine.


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Morita, Kenji. (2012). Exhaust device for motorcycle (U.S. Patent No. 8109084). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8109084

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