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.:
Date of Patent:
May. 15, 1990
Filed:
Aug. 05, 1987
Applicant:
Inventors:
Tetsuro Kanda, Yokohama, JP;
Shizuo Yamamoto, Kawasaki, JP;
Assignee:
Chiyoda Chemical Engineering & Construction Company Limited, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01N / ; F01N / ; F01N / ;
U.S. Cl.
CPC ...
181228 ; 181255 ; 181257 ; 181264 ; 181268 ; 181272 ;
Abstract
A muffler has a muffler body within which is located an intermediate duct pipe colinear with the exhaust and tail pipes, so that exhaust gas from the exhaust duct pipe can pass through a main flow route in the intermediate duct pipe in a substantially straight line without reflecting. An inner or by-pass pipe forms a gas by-pass and has gas flow restriction elements.