US3252767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system
Assignee: Walker Manufacturing Co
•
Filing: 1963-01-21
•
Granted: 1966-05-24
•
Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Ervin C Lentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:39
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2846; F01N3/2882; F01N3/2885; F01N1/00; F01N1/02; F01N2230/00; F01N2230/04; F01N2310/00; F01N2310/02; F01N2330/00; F01N2330/08; F01N2450/00; F01N2450/04; F01N2490/00; F01N2490/15; F01N2490/155
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
156 words
A CATALYST CONTAINER FOR THE EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE COMPRISING ELONGATED OUTER SHELL MEANS, EXHAUST GAS INLET MEANS AT ONE END OF SAID OUTER SHELL MEANS, EXHAUST GAS OUTLET MEANS AT THE OTHER END OF SAID SHELL MEANS, AND MEANS DEFINING A CATALYST BED SUPPORTED WITHIN SAID OUTER SHELL MEANS AND DEFINING AT LEAST PARTIALLY AN EXHAUST GAS FLOW PATH THROUGH SAID OUTER SHELL MEANS BETWEEN SAID EXHAUST GAS INLET MEANS AND SAID EXHAUST GAS OUTLET MEANS, SAID MEANS DEFINING SAID CATALYST BED COMPRISING CATALYST BED OUTER SHELL MEANS EXTENDING ALONG AT LEAST A PORTION OF THE LENGTH OF SAID ELONGATE OUTER SHELL MEANS, AT LEAST ONE OF SAID OUTER SHELL MEANS BEING SUBSTANTIALLY OVAL IN CROSSSECTION, SAID OUTER SHELL MEANS BEING IN CLOSELY SPACED RELATIONSHIP ALONG ONE SIDE OF ONE AXIS OF SAID OVAL OUTER SHELL MEANS, WELDING SAID OUTER SHELL MEANS TOGETHER AT A PLURALITY OF SPACED LOCATIONS ALONG SAID ONE
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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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |