US5304351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-oval shaped carrier having excellent thermal stress resistance and thermal fatigue resistance for automobile exhaust gas-purifying catalyst
Assignee: Nippon Steel Corp
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Filing: 1991-11-12
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Granted: 1994-04-19
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Expires: 2011-11-12
Abstract
Abstract A semi-oval shaped metallic carrier having an excellent thermal stress resistance and thermal fatigue resistance and used for an automobile exhaust gas-purifying catalyst, in which the carrier is composed of a metallic honeycomb body constituted by superimposing flat metal foils and corrugated metal foils one on the other and winding them together, and a metallic jacket enclosing the lateral face of the honeycomb body, the transverse section of the metallic carrier constituting the parallel portions and semi-circular arc portions and the honeycomb body is joined to the jacket mainly at the semi-circular arc portions or at the parallel portions of the honeycomb body.
Inventors
- 👤 Takashi Tanaka
- 👤 Mikio Yamanaka
- 👤 Yutaka Sadano
- 👤 Kouki Yotsuya
- 👤 Yasushi Ishikawa
- 👤 Toshihiro Takada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:32
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; F01N3/2839; F01N3/2842; B; B01; B01J; B01J35/00; B01J35/50; B01J35/56; F01N2330/00; F01N2330/02; F01N2450/00; F01N2450/02; F01N2450/22; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A metallic carrier with an oval type transverse cross-section having an excellent thermal stress resistance and thermal fatigue resistance used for an automobile exhaust gas-purifying catalyst, comprising: a metallic honeycomb body having a lateral face constituted by superimposing flat metal foils and corrugated metal foils one on the other and then winding them together and a metallic jacket enclosing the lateral face of said honeycomb body, the metallic carrier being composed of the metallic honeycomb body joined to the metallic jacket, the transverse cross section of said metallic carrier constituting parallel portions and semi-circular arc portions wherein said honeycomb body is joined to said jacket substantially only at said semi-circular arc portions of said honeycomb body.
Claim 2
Dependent Claim
116 words
A metallic carrier with an oval type transverse cross-section having an excellent thermal stress resistance and thermal fatigue resistance used for an automobile exhaust gas-purifying catalyst, comprising: a metallic honeycomb body having a lateral face constituted by superimposing flat metal foils and corrugated metal foils one on the other and then winding them together and a metallic jacket enclosing the lateral face of said honeycomb body, the metallic carrier being composed of the metallic honeycomb body joined to the metallic jacket, the transverse cross section of said metallic carrier constituting parallel portions and semi-circular arc portions wherein said honeycomb body is joined to said jacket substantially only at said semi-circular arc portions of said honeycomb body.
Claim 3
Dependent Claim
22 words
A metallic carrier according to claim 1, wherein said honeycomb body is joined to said jacket only at said semi-circular arc portions.
Claim 4
Dependent Claim
39 words
A metallic carrier according to claim 1, wherein said jacket has a circumferential length, and wherein said honeycomb body is joined to said jacket over a small portion more than an entire circumferential length of said semi-circular arc portions.
Claim 5
Dependent Claim
115 words
A metallic carrier with an oval type transverse cross-section having an excellent thermal stress resistance and thermal fatigue resistance used for an automobile exhaust gas-purifying catalyst, comprising: a metallic honeycomb body having a lateral face constituted by superimposing flat metal foils and corrugated metal foils one on the other and then winding them together and a metallic jacket enclosing the lateral face of said honeycomb body, the metallic carrier being composed of the metallic honeycomb body joined to the metallic jacket, the transverse cross section of said metallic carrier constituting parallel portions and semi-circular arc portions wherein said honeycomb body is joined to said jacket substantially only at said parallel portions of said honeycomb body.
Claim 6
Dependent Claim
115 words
A metallic carrier with an oval type transverse cross-section having an excellent thermal stress resistance and thermal fatigue resistance used for an automobile exhaust gas-purifying catalyst, comprising: a metallic honeycomb body having a lateral face constituted by superimposing flat metal foils and corrugated metal foils one on the other and then winding them together and a metallic jacket enclosing the lateral face of said honeycomb body, the metallic carrier being composed of the metallic honeycomb body joined to the metallic jacket, the transverse cross section of said metallic carrier constituting parallel portions and semi-circular arc portions wherein said honeycomb body is joined to said jacket substantially only at said parallel portions of said honeycomb body.
Claim 7
Dependent Claim
25 words
A metallic carrier according to claim 4, wherein said honeycomb body is joined to said jacket only at said parallel portions of said honeycomb body.
Claim 8
Dependent Claim
38 words
A metallic carrier according to claim 4, wherein said jacket has a circumferential length, and wherein said honeycomb body is joined to said jacket over a small portion more than an entire circumferential length of said parallel portions.
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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) | 1997-04-18 | 1997-10-18 | 1998-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-18 | 2001-10-18 | 2002-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-18 | 2005-10-18 | 2006-04-19 | $7700.00 | Window Closed / Lapsed |