US2986454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular catalytic converter
Assignee: Wyeth Holdings LLC
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Filing: 1957-07-23
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Granted: 1961-05-30
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Expires: 1977-07-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Jewett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/06; B01J8/065; B01J19/00; B01J19/24; B01J19/2415; B01J19/2425; B01J8/067; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00088; B01J2208/00106; B01J2208/00168; B01J2208/00212; B01J2208/00221; B01J2208/00477; B01J2208/00495; B01J2208/00539; B01J2219/00; B01J2219/00761; B01J2219/00763; B01J2219/00765; B01J2219/00777; Y; Y10; Y10S; Y10S165/00; Y10S165/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A CATALYTIC CONVERTER COMPRISING IN COMBINATION A CONVERTER SHELL CONTAINING A SET OF CATALYST TUBES MOUNTED AT THEIR ENDS IN A PAIR OF MAIN TUBE SHEETS AND A SET OF BAFFLES FITTING CLOSELY AROUND THE CATALST TUBES FOR DIRECTING THE FLOW OF A TEMPERATURE REGULATING LIQUID ACROSS SAID TUBES, A GAS INLET CHAMBER AT ONE END OF SAID SHELL, A SECONDARY TUBE SHEET ACROSS SAID INLET CHAMBER, A SET OF ISOLATING TUBES EACH HAVING ONE END SUPPORTED IN SAID SECONDARY TUBE SHEET AND THE OTHER END PIVOTALLY ATTACHED TO ONE OF SAID CATALYST TUBES TO PERMIT ROCKING IN RESPONSE TO DIFFERENCES IN THERMAL EXPANSION BETWEEN SAID MAIN AND SECONDARY TUBE SHEETS, AND MEANS FOR COOLING SAID SECONDARY TUBE SHEET AND ISOLATING TUBES WHEREBY PRE-IGNITION OF AN ENTERING REACTION GAS MIXTURE IN AVOIDED.
Claim 2
Dependent Claim
132 words
A CATALYTIC CONVERTER COMPRISING IN COMBINATION A CONVERTER SHELL CONTAINING A SET OF CATALYST TUBES MOUNTED AT THEIR ENDS IN A PAIR OF MAIN TUBE SHEETS AND A SET OF BAFFLES FITTING CLOSELY AROUND THE CATALST TUBES FOR DIRECTING THE FLOW OF A TEMPERATURE REGULATING LIQUID ACROSS SAID TUBES, A GAS INLET CHAMBER AT ONE END OF SAID SHELL, A SECONDARY TUBE SHEET ACROSS SAID INLET CHAMBER, A SET OF ISOLATING TUBES EACH HAVING ONE END SUPPORTED IN SAID SECONDARY TUBE SHEET AND THE OTHER END PIVOTALLY ATTACHED TO ONE OF SAID CATALYST TUBES TO PERMIT ROCKING IN RESPONSE TO DIFFERENCES IN THERMAL EXPANSION BETWEEN SAID MAIN AND SECONDARY TUBE SHEETS, AND MEANS FOR COOLING SAID SECONDARY TUBE SHEET AND ISOLATING TUBES WHEREBY PRE-IGNITION OF AN ENTERING REACTION GAS MIXTURE IN AVOIDED.
References Cited (Backward Citations)
US1848939A
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US1847743A
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US1909358A
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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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |