Patent US5403558A successfully refreshed from Google Patents.
US5403558A
Expired / Lapsed
US
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Heat and fatigue resistant metallic carrier for automobile exhaust gas-purifying catalyst
Assignee: Nippon Steel Corp
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Filing: 1993-07-06
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Granted: 1995-04-04
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Expires: 2013-07-06
Abstract
Abstract A metallic carrier composed of an end face portion formed in at least one of the axial end portions of a honeycomb body and an outer circumferential reinforcing layer in which foils in a range from the outermost layer to a quarter of the total number of layers are joined together in the axial intermediate portion. Thus, the metallic carrier is flexible in expansion and shrinkage. Further, the honeycomb body and a jacket are joined to each other mainly at the outer circumference of the outer circumferential reinforcing layer of the honeycomb body, to reduce thermal stress developed between the honeycomb body and jacket while maintaining the strength against a high temperature, to thereby prevent the metallic carrier from being ruptured.
Inventors
- 👤 Takuo Kono
- 👤 Mikio Yamanaka
- 👤 Takashi Tanaka
- 👤 Yasushi Ishikawa
- 👤 Yutaka Sadano
- 👤 Masao Yashiro
- 👤 Tatuo Sugiura
- 👤 Tadanobu Komai
- 👤 Shinichi Matsumoto
- 👤 Toshihiro Takada
- 👤 Shinji Shibata
- 👤 Hikaru Aoyagi
- 👤 Masaaki Ohashi
- 👤 Yoshio Nishizawa
- 👤 Akihiko Kasahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:27
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2853; B; B01; B01J; B01J35/00; B01J35/50; B01J35/56; B01J35/57; F01N3/2803; F01N3/2807; F01N3/281; F01N2330/00; F01N2330/02; F01N2330/30; F01N2330/32; F01N2330/322; F01N2330/324; F01N2350/00; F01N2350/02; F01N2350/04; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
336 words
A metallic carrier for a catalyst for a catalytic converter, comprising: a metallic honeycomb body constituted by a flat metal foil and a corrugated metal foil which have been stacked and wound together in layers, each layer constituted by a flat metal foil and a corrugated metal foil, said layers together forming the honeycomb body, and said honeycomb body having a metal foil of an outermost layer constituting an outer circumferential surface of said honeycomb body, and a metallic jacket enclosing said honeycomb body, wherein said layers of the flat and corrugated foils in at least one axial end portion of said honeycomb body are joined together, and the foils in said layers are also joined together in said at least one axial end portion, in a range of from an outermost to an innermost layer to form an end face portion, said at least one axial end portion extending along an axial length of said honeycomb body less than the full axial length of said honeycomb body, said honeycomb body having a remainder of the axial length constituting an axial intermediate portion contiguous to said end face portion, said foils in said layers and said layers in at least a part of an axial length of said axial intermediate portion of said honeycomb body being joined together only in a range of from said outermost layer to a number of layers less than a quarter of the total number of layers in said honeycomb body inwardly thereof from the outermost layer of said honeycomb body to form an outer circumferential reinforcing layer portion, said foil constituting the outer circumferential surface of said honeycomb body and an inner surface of said metallic jacket being joined directly to each other along at least a part of an axial length of said outer circumferential reinforcing layer portion and at most along the entire axial length of said outer circumferential reinforcing layer portion and only a part of an axial length of said at least one axial end portion.
Claim 2
Dependent Claim
336 words
A metallic carrier for a catalyst for a catalytic converter, comprising: a metallic honeycomb body constituted by a flat metal foil and a corrugated metal foil which have been stacked and wound together in layers, each layer constituted by a flat metal foil and a corrugated metal foil, said layers together forming the honeycomb body, and said honeycomb body having a metal foil of an outermost layer constituting an outer circumferential surface of said honeycomb body, and a metallic jacket enclosing said honeycomb body, wherein said layers of the flat and corrugated foils in at least one axial end portion of said honeycomb body are joined together, and the foils in said layers are also joined together in said at least one axial end portion, in a range of from an outermost to an innermost layer to form an end face portion, said at least one axial end portion extending along an axial length of said honeycomb body less than the full axial length of said honeycomb body, said honeycomb body having a remainder of the axial length constituting an axial intermediate portion contiguous to said end face portion, said foils in said layers and said layers in at least a part of an axial length of said axial intermediate portion of said honeycomb body being joined together only in a range of from said outermost layer to a number of layers less than a quarter of the total number of layers in said honeycomb body inwardly thereof from the outermost layer of said honeycomb body to form an outer circumferential reinforcing layer portion, said foil constituting the outer circumferential surface of said honeycomb body and an inner surface of said metallic jacket being joined directly to each other along at least a part of an axial length of said outer circumferential reinforcing layer portion and at most along the entire axial length of said outer circumferential reinforcing layer portion and only a part of an axial length of said at least one axial end portion.
Claim 3
Dependent Claim
44 words
A metallic carrier as claimed in claim 1 wherein said outer circumferential surface of said honeycomb body and said inner surface of said metallic jacket are joined to each other along only a location other than the outermost layer of said end face portion.
Claim 4
Dependent Claim
68 words
A metallic carrier as claimed in claim 1 wherein said outer circumferential surface of said honeycomb body and said inner surface of said metallic jacket are joined to each other along at least a part of an axial length of the outermost layer of said outer circumferential reinforcing layer portion and along only a part of an axial length of the outermost layer of said end face portion.
Claim 5
Dependent Claim
74 words
A metallic carrier as claimed in claim 2 or 3 wherein said flat and corrugated metal foils are joined at each of opposite end portions of said honeycomb body to form end face portions at said opposite end portions of said honeycomb body, and said outer circumferential reinforcing layer portion in the axial intermediate portion of said honeycomb body is contiguous to said end face portions at opposite end portions of said honeycomb body.
Claim 6
Dependent Claim
59 words
A metallic carrier as claimed in claim 4 wherein the length in an axial direction of said honeycomb body of said end face portions along which said flat and corrugated metal foils are joined increases toward said axial intermediate portion gradually from a center of said honeycomb body to an innermost circumference of said outer circumferential reinforcing layer portion.
Claim 7
Dependent Claim
74 words
A metallic carrier as claimed in claim 2 or 3 wherein said flat and corrugated metal foils are joined at each of opposite end portions of said honeycomb body to form end face portions at said opposite end portions of said honeycomb body, and said outer circumferential reinforcing layer portion extends along the axial length of said axial intermediate portion of said honeycomb body from one end face portion to another end face portion.
Claim 8
Dependent Claim
60 words
A metallic carrier as claimed in claim 6 wherein the length in an axial direction of said carrier of each of said end face portions along which said flat and corrugated metal foils are joined increases toward said axial intermediate portion gradually from a center of said honeycomb body to an innermost circumference of said outer circumferential reinforcing layer portion.
Claim 9
Dependent Claim
71 words
A metallic carrier as claimed in claim 6 wherein the outer circumferential reinforcing layer portion is composed of two outer circumferential reinforcing layer portion parts respectively contiguous to said opposite end face portions and a further outer circumferential reinforcing layer portion part contiguous to both said two out circumferential reinforcing layer portions and having a smaller number of layers than the each of said two outer circumferential reinforcing layer portion parts.
Claim 10
Dependent Claim
57 words
A metallic carrier as claimed in claim 2 or 3 wherein said flat and corrugated metal foils are joined at each of opposite end portions of said honeycomb body to form end face portions at said opposite end portions of said honeycomb body, and said outer circumferential reinforcing layer portion is spaced from said end face portions.
Claim 11
Dependent Claim
67 words
A metallic carrier as claimed in claim 2 or 3 wherein said flat and corrugated metal foils are joined at each of opposite end portions of said honeycomb body to form end face portions at said opposite end portions of said honeycomb body, and said outer circumferential reinforcing layer portion is spaced from one of said end face portions and contiguous to the other end face portion.
Claim 12
Dependent Claim
75 words
A metallic carrier as claimed in claim 2 or 3 wherein said flat and corrugated metal foils are joined at only one end portion of said honeycomb body to form an end face portion at the one end portion of said honeycomb body, and said outer circumferential reinforcing layer portion in the axial intermediate portion of said honeycomb body is contiguous to said end face portion at said one end portion of said honeycomb body.
Claim 13
Dependent Claim
59 words
A metallic carrier as claimed in claim 11 wherein the said end face portion has a length in an axial direction of said honeycomb body along which said flat and corrugated layers are joined which increases toward said axial intermediate portion gradually from a center of said honeycomb body to an innermost circumference of said outer circumferential reinforcing layer.
Claim 14
Dependent Claim
48 words
A metallic carrier as claimed in claim 11 wherein said outer circumferential reinforcing layer portion extends along said axial intermediate portion of said honeycomb body from said end face portion at said one end portions of said honeycomb body to the opposite end portion of said honeycomb body.
Claim 15
Dependent Claim
61 words
A metallic carrier as claimed in claim 13 wherein the said end face portion has a length in an axial direction of said honeycomb body along which said flat and corrugated metal foils are joined which increases toward said axial intermediate portion gradually from a center of said honeycomb body to an innermost circumference of said outer circumferential reinforcing layer portion.
Claim 16
Dependent Claim
77 words
A metallic carrier as claimed in claim 13 wherein the outer circumferential reinforcing layer portion is composed of a first outer circumferential reinforcing layer portion part having one end contiguous to said one end face portion and a second outer circumferential reinforcing layer portion part contiguous to another end of said first outer circumferential reinforcing layer portion and having a smaller number of layers the number of layers of said first outer circumferential reinforcing layer portion part.
Claim 17
Dependent Claim
62 words
A metallic carrier as claimed in claim 11 wherein the outer circumferential reinforcing layer portion is composed of a first outer circumferential reinforcing layer portion part contiguous to said one end face portion and a second outer circumferential reinforcing layer portion part having a smaller number of layers than the number of layers of said first outer circumferential reinforcing layer portion part.
Claim 18
Dependent Claim
58 words
A metal carrier as claimed in claim 2 or 3 wherein said flat and corrugated metal foils are joined at only one end portion of said honeycomb body to form an end face portion at the one end portion of said honeycomb body, and said outer circumferential reinforcing layer portion is spaced from said one end face portion.
Claim 19
Dependent Claim
34 words
A metallic carrier as claimed in claim 17 wherein said outer circumferential reinforcing layer portion is spaced from said one end face portion and contiguous to the other end portion of said honeycomb body.
Claim 20
Dependent Claim
53 words
A metallic carrier as claimed in claim 1 wherein said honeycomb body and said inner surface of said metallic jacket are joined to each other in only a part of the outer circumference of said outer circumferential reinforcing layer portion and in a part of the outermost layer of said end face portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-03 | 1998-10-03 | 1999-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-03 | 2002-10-03 | 2003-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-03 | 2006-10-03 | 2007-04-04 | $7700.00 | Window Closed / Lapsed |