Title of Invention

"PIPE-SHAPED CATALYST CONSTRUCTION FOR EXHAUST GAS PURIFICATION."

Abstract A pipe-shaped catalyst construction for exhaust gas purification comprising (a) a pipe-shaped supporting body including a metallic pipe (11) and a cylindncal metallic foil (12) or a metallic sheet contained in the metallic pipr and provided with concaved portions (13) formed continuously in circumferential direction to be concaved inwardly and outwardly in radial direction, and (b) a catalyst material (19) supported at least on the metallic foil (12) or the metallic sheet of the supporting body -characterised in that the metallic foil (12) or the metallic foil (12) or the metallic sheet is disposed along an inner peripheral surface of the metallic pipe (11) except for a central portion of the metallic pipe in sectioin, and rate of a central sectional area portion where the metallic foil (12) or the metallic sheet is not disposed to a whole sectional area of the metallic pipe (11) defined by the inner peripheral surface of the pipe is selected to be 20% to 60%
Full Text DESCRIPTION (COMPLETE) OCR NOT PREPARE
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We Claim:
1. A pipe-shaped catalyst construction for exhaust gas purification comprising:
(a) a pipe-shaped supporting body including a metallic pipe (11) and a cylindrical metallic foil (12) or a metallic sheet contained in the metallic pipe and provided with concaved portions (13) formed continuously in circumferential direction to be concaved inwardly and outwardly in radial direction, and
(b) a catalyst material (19) supported at least on the metallic foil (12) or the metallic sheet of the supporting body.
characterised in that the metallic foil (12) or the metallic foil (12) or the metallic sheet is disposed along an inner peripheral surface of the metallic pipe (11) except for a central portion of the metallic pipe in section, and rate of a central sectional area portion where the metallic foil (12) or the metallic sheet is not disposed to a whole sectional area of the metallic pipe (11) defined by the inner peripheral surface of the pipe is selected to be 20% to 60%.
2. A pipe-shaped catalyst construction for exhaust gas purification as claimed in
claim 1 wherein a rate of radius of central portion in section where the
metallic foil or the metallic sheet is not disposed to radius of the pipe is
selected to be 45% to 77%.
3. A pipe-shaped catalyst construction for exhaust gas purification as claimed in claim 1 wherein a rate of a central sectional area portion where the metallic foil or the metallic sheet is not disposed to a whole sectional area is selected to be 31% to 52%.
4. A pipe-shaped catalyst construction for exhaust gas purification as claimed in claim 2 wherein a rate of radius of central portion in section where the metallic foil or the metallic sheet is not disposed to radius of the pipe is selected to be 55% to 72%.
5. A pipe-shaped catalyst construction for exhaust gas purification as claimed in claim 2 wherein each of the concaved portions of the metallic foil or the metallic sheet has two adjacent section U-shaped portions each protruding outwardly in radial direction, and a connecting portion connecting the section U-shaped portions.
o. A pipe-shaped catalyst construction for exhaust gas purification as claimed in claim 2 wherein each of the concaved portions of the metallic foil or the metallic sheet has two adjacent section V-shaped portions each protruding outwardly in radial direction.
7. A pipe-shaped catalyst construction for exhaust gas purification as claimed in claim 2 wherein each of the concaved portions of the metallic foil or the metallic sheet has two adjacent section V-shaped portions each protruding outwardly in radial direction, and a connecting portion connecting the section V-shaped portions.
8. A pipe-shaped catalyst construction for exhaust gas purification as claimed in claims 5 , 6 or 7 wherein the catalyst material is supported on the inner peripheral surface of the metallic pipe, and on an inner surface and an outer surface of the metallic foil or the metallic sheet.
9. A pipe-shaped catalyst construction for exhaust gas purification as claimed in claims 5, 6 or 7 wherein the concaved portions of the metallic foil or the metallic sheet are joined to the inner surface of the metallic pipe at opened ends thereof so that a recess in the concaved portions forms a flowing path at surrounding portion of the metallic pipe.
10. A pipe-shaped catalyst construction for exhaust gas purification as claimed in claims 8 or 9 wherein the opened ends of the concave portions are joined to the inner peripheral surface of the metallic pipe so that cavities in the concaved portions form together with the metallic pipe flowing paths at the surrounding portion of the metallic pipe.
11. A pipe-shaped catalyst construction for exhaust gas purification substantially as herein described with reference to the accompanying drawings.

Documents:

49-del-2001-abstract.pdf

49-del-2001-claims.pdf

49-del-2001-correspondence-others.pdf

49-del-2001-correspondence-po.pdf

49-del-2001-description (complete).pdf

49-del-2001-drawings.pdf

49-del-2001-form-1.pdf

49-del-2001-form-19.pdf

49-del-2001-form-2.pdf

49-del-2001-form-3.pdf

49-del-2001-form-5.pdf

49-del-2001-pa.pdf

49-del-2001-petition-others.pdf

abstract.jpg


Patent Number 242097
Indian Patent Application Number 49/DEL/2001
PG Journal Number 33/2010
Publication Date 13-Aug-2010
Grant Date 11-Aug-2010
Date of Filing 19-Jan-2001
Name of Patentee CATALER CORPORATION
Applicant Address 7800, CHIHAMA, DAITO-CHO, OGASA-GUN, SHIZUOKA-KEN, 437-1492, JAPAN.
Inventors:
# Inventor's Name Inventor's Address
1 SATO MASAYASU C/O CATALER CORPORATION, 7800, CHIHAMA, DAITO-CHO, OGASA-GUN, SHIZUOKA-KEN, 437-1492, JAPAN.
2 OZAWA TERUHIKO C/O CATALER CORPORATION, 7800, CHIHAMA, DAITO-CHO, OGASA-GUN, SHIZUOKA-KEN, 437-1492, JAPAN.
PCT International Classification Number F01N 3/28
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA