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:
Aug. 01, 1978

Filed:

Nov. 03, 1976
Applicant:
Inventors:

Shuichi Yamazaki, Kamifukuoka, JP;

Shinichi Shimada, Kamifukuoka, JP;

Yasuhito Sato, Kamifukuoka, JP;

Hiroshi Shirakura, Kamifukuoka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ; F02B / ;
U.S. Cl.
CPC ...
60282 ; 60322 ; 1231 / ;
Abstract

Disclosed herein is a liner for an exhaust port system of an internal combustion engine for reducing heat loss from the exhaust gas to facilitate combustion of unburned hydrocarbons (HC) and oxidation of unburned carbon monoxide (CO). The exhaust port liner is rigidly secured at one end thereof to the exhaust port and is supported at its other end by means of a peripheral sealing ring to provide an airtight liner which is free sliding at said other end to accommodate expansion and contraction of the exhaust port liner by the exhaust gas passing therethrough.


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