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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 4312422 B1

PDFFull Text
Date of Patent:
Jan. 26, 1982

Filed:

May. 30, 1980

Exhaust silencer for outboard engine with a reflection chamber

Applicant:
Inventors:

Yukio Matsushita, Iwata, JP;

Takehisa Suzuki, Shizuoka, JP;

Assignees:

Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;

Sanshin Kogyo Kabushiki Kaisha, Hamamatsu, JP;

Attorney:

Mon; Donald D.

Primary Examiner:

L T Hix

Assistant Examiner:

Thomas H Tarcza

Int. Cl.
CPC ...
F01N / ; F01N / ;
U.S. Cl.
CPC ...
181272 ; 181273 ; 440 89 ;
Abstract

An exhaust silencer for an outboard engine including an expansion chamber for reducing the exhaust noise. A reflection chamber having an open end and a closed end is placed with its open end communicating with the expansion chamber at a location which is reversely spaced from the open end of an exhaust pipe discharging into the expansion chamber. This enables the engine to be operated optimally in a plurality of engine speed ranges and for the silencer to occupy a minimal volume.

Find Patent Forward Citations

Matsushita, Yukio. (1982). Exhaust silencer for outboard engine with a reflection chamber (U.S. Patent No. 4312422). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4312422

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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