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. 19, 1992
Filed:
Nov. 30, 1989
Applicant:
Inventors:
Masayoshi Usui, Numazu, JP;
Haruo Serizawa, Shizuoka, JP;
Assignee:
Usui Kokusai Sangyo Kabushiki Kaisha, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60299 ; 422171 ; 422179 ; 422180 ;
Abstract
In an exhaust gas cleaning apparatus, at least two honeycomb core bodies each as an exhaust gas cleaning catalyst are arranged, with at least one axial space therebetween, in a metal casing. Each core body is composed of a sheet-like band and a corrugated band. The outer peripheral surfaces of the core bodies are fixed to the inner surface of the casing so that each core body is expandable and contractible axially. The axial space effectively absorbs and relaxes the stress due to large thermal strains acting on the individual core bodies, thus causing an improved durability.