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:
Sep. 13, 1994
Filed:
Dec. 12, 1989
Applicant:
Inventors:
Masayoshi Usui, Numazu, JP;
Haruo Serizawa, Shizuoka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
422180 ; 422171 ; 422176 ; 422177 ; 422179 ; 422180 ; 55DI / ; 55521 ; 502527 ; 29890 ;
Abstract
An exhaust gas cleaning apparatus comprises one or more honeycomb core bodies for carrying an exhaust gas cleaning catalyst and fitted in a tubular metal casing. The metal casing has an outer wall which is axially expandable and contractible so as to follow the stress due to thermal strains acting on the honeycomb core bodies inside, thereby remarkably improving the apparatus in durability and vibration resistance.