Patent US4948774A successfully refreshed from Google Patents.
US4948774A
Expired / Lapsed
US
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Metal-made carrier body for carrying thereon exhaust gas cleaning catalyst
Assignee: Usui Kokusai Sangyo Kaisha Ltd
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Filing: 1989-07-06
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Granted: 1990-08-14
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Expires: 2009-07-06
Abstract
Abstract A metal-made carrier body, for carrying thereon an exhaust gas cleaning catalyst, comprises a metal casing, and a multi-layered composite structure or honeycomb core structure composed of a sheet-like metal band and a corrugated metal band and enclosed in the tubular metal casing and joined therewith. The inner wall of the casing is provided with brazing-material-holding grooves. Because of the brazing-material-holding grooves, it is possible to join the honeycomb core structure and the casing together with adequate firmness, thus making the carrier body excellently durable.
Inventors
- 👤 Masayoshi Usui
- 👤 Haruo Serizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:02
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; F01N3/2839; F01N3/2842; F01N2330/00; F01N2330/02; F01N2330/04; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/1234; Y10T428/12389; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
112 words
A-metal-made carrier body for carrying thereon an exhaust gas cleaning catalyst, said carrier body being formed by superposing a sheet-like metal band made of a thin metal sheet and a corrugated band made from another thin metal sheet one over the other in a contiguous relation into a honeycomb core structure of a spiral or laminate form defining many network-patterned gas flow passages along the central axis thereof, and then fixing the honeycomb core structure within a tubular metal casing, characterized in that the honeycomb core body is fixed on the tubular metal casing by a brazing material held in brazing-material-holding grooves formed in the inner wall of the tubular metal casing.
Claim 2
Dependent Claim
112 words
A-metal-made carrier body for carrying thereon an exhaust gas cleaning catalyst, said carrier body being formed by superposing a sheet-like metal band made of a thin metal sheet and a corrugated band made from another thin metal sheet one over the other in a contiguous relation into a honeycomb core structure of a spiral or laminate form defining many network-patterned gas flow passages along the central axis thereof, and then fixing the honeycomb core structure within a tubular metal casing, characterized in that the honeycomb core body is fixed on the tubular metal casing by a brazing material held in brazing-material-holding grooves formed in the inner wall of the tubular metal casing.
Claim 3
Dependent Claim
22 words
A metal-made carrier body according to claim 1, wherein the brazing-material-holding grooves are formed in straight or curved lines, or in blocks.
Claim 4
Dependent Claim
32 words
A metal-made carrier body according to claim 1, wherein the brazing-material-holding grooves are formed in lines extending at a desired angle with respect to the central axis of the tubular metal casing.
Claim 5
Dependent Claim
40 words
A metal-made carrier body according to claim 1, wherein the brazing-material-holding grooves are formed in the inner wall of the tubular metal casing in lines parallel to the central axis of the tubular metal casing and spaced at desired intervals.
Claim 6
Dependent Claim
40 words
A metal-made carrier body according to claim 1, wherein the brazing-material-holding grooves are formed in the inner wall of the tubular metal casing in lines perpendicular to the central axis of the tubular metal casing and spaced at desired intervals.
Claim 7
Dependent Claim
33 words
A metal-made carrier body according to claim 1, wherein the brazing-material-holding grooves are formed in the inner wall of the tubular metal casing along the entire axial length of the tubular metal casing.
Claim 8
Dependent Claim
34 words
A metal-made carrier body according to claim 1, wherein the brazing-material-holding grooves are formed in the inner wall of the tubular metal casing along part of the axial length of the tubular metal casing.
Claim 9
Dependent Claim
24 words
A metal-made carrier body according to claim 1, wherein the brazing-material-holding grooves are recesses formed on the inner wall of the tubular metal casing.
Claim 10
Dependent Claim
26 words
A metal-made carrier body according to claim 1, wherein the brazing-material-holding grooves are recesses formed on the inner wall of the tubular metal casing by pressing.
Claim 11
Dependent Claim
26 words
A metal-made carrier body according to claim 1, wherein the brazing material held in the individual brazing-material-holding groove is in the form of a wire rod.
Claim 12
Dependent Claim
25 words
A metal-made carrier body according to claim 1, wherein the brazing material held in the individual brazing-material-holding groove is in the form of a block.
Claim 13
Dependent Claim
41 words
A metal-made carrier body according to claim 1, wherein the brazing material held in the individual brazing-material-holding groove is a brazing material which has been put in the groove in a molten state and then solidified in the groove by cooling.
Claim 14
Dependent Claim
38 words
A metal-made carrier body according to claim 1, wherein the brazing material held in the brazing-material-holding grooves is a brazing material which has been put in the grooves in a paste state and then dried in the grooves.
References Cited (Backward Citations)
US4777158A
Cited
DE3726502A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |