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:
Feb. 10, 2004
Filed:
Mar. 06, 2000
Tadayuki Otani, Tokai, JP;
Atuhiko Imai, Tokai, JP;
Masayuki Kasuya, Tokai, JP;
Kazutoshi Iwami, Tokyo, JP;
Toru Utsumi, Tokyo, JP;
Mikio Yamanaka, Futtsu, JP;
Hitoshi Ohta, Tokyo, JP;
Yoshikuni Tokunaga, Aichi, JP;
Fujio Shimizu, Tokai, JP;
Toshihiro Egami, Tokai, JP;
Tamio Noda, Tokai, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
In order to improve solid phase diffusion bondability at contact portions between a metal flat foil and a metal corrugated foil together constituting a metal honeycomb body for a catalyst converter used for purifying an exhaust gas and to improve engine durability, the present invention comprises one or combination of the following structures; a structure wherein at least one of the metal foils has a foil thickness of less than 40 &mgr;m; a structure wherein an Al content after bonding is at least 3%; a structure wherein the surface condition of both metal foils in a width-wise direction has a predetermined surface coarseness or a predetermined surface shape and condition; and a structure wherein the width of contact portions between both metal foils is at least five times the thickness of the metal foils. In order to further improve engine durability, the present invention disposes an unbonded portion inside the honeycomb body having the construction described above, or disposes a shell on the outer periphery of the honeycomb body.